Metal Wall Panels Archives | Page 2 of 4

Tips for Selecting and Field Applying Touch-Up Paint

Posted on November 14, 2019 by kbuchinger

Metal roofing and wall panels routinely come from the factory pre-finished a durable, baked-on paint finish that covers the Galvalume^®-coated steel surface. This production occurs in a controlled environment, which helps create a consistent product, and allows metal panels to last decades with minimal maintenance. It turns out, however, that the biggest threat to a metal panel’s paint coating can happen during panel installation. Tools, fasteners and other installation-related items and activities can scratch or damage the finish, requiring touch-ups to the paint. If you experience this, here are some touch-up paint tips to keep in mind.

Assess the Damage

First, determine how noticeable the scratch is. Do you have to be close to see it, or can you see it easily from several feet away? Generally, if the scratch isn’t noticeable and has not penetrated the Galvalume coating, its best to refrain from doing a paint touch-up. This is because touch-up paint can’t match the fade resistance of the original baked-on pre-finish, and if the Galvalume is still intact, it will still protect the steel beneath the scratch.

On dark or bright colors in particular, the touch-up paint will fade much more quickly than the original paint. Often, the end result is that touch-up paint is more noticeable than if the scratch is left alone. On the other hand, if the scratch is noticeable and needs a touch-up, there are some best practices to follow. It’s important to note though, that if a large area of the panel is damaged (more than 10–15%), then it’s best to just replace the panel.

Getting the right touch-up paint

Metal panel manufacturers recognize that there may be a need for minor paint touch-ups in the field. So, most offer small containers of paint conducive to field work. These paints are specifically formulated to match standard color offerings, and have properties that make them compatible with the factory finish. Therefore, it’s important to always buy touch-up paint from the manufacturer that produced the original panels. Never ask a paint store to match colors based on a piece of panel or trim. Doing so may get a color match, but it won’t contain the other protective properties of the paint coating you receive from a manufacturer.

Choice of touch-up paint application

Touch-up paint for field application is often available in three types of containers: paint pens, small bottles and spray cans. Usually, the best choice for a scratch is a paint pen. Touch-up paint pens have small, precise tips that can fit into scratches, allowing it to only apply paint where needed. For larger scratches or scuffs, manufacturers offer bottles of paint (with a small brush) similar to those used for nail polish. Generally, these are best for dings on the panel.

Spray cans are also available, and are ideal for painting small accessories like plumbing vent pipes. Don’t use spray cans to conceal a scratch because they apply much more paint than necessary. This can cause unsatisfactory results as the paint weathers and fades differently than the original paint.

Using touch-up paint

When performing a paint touch-up, it’s important to make sure the area in and around the scratch is clean and dry. Wipe down the area as needed, then dry it completely before applying any paint. Afterward, paint the surface using the least amount of paint necessary. This eliminates excess paint on the pre-finished panel. Paint pens are ideal for this since they apply less paint than a nail polish-type bottle or spray can. Once the touch-up paint is on the panel, it will need time to dry. During drying, make sure that dust or other contaminants do not embed into the wet paint.

Consult the metal panel manufacturer

To ensure you or your maintenance professional properly select and apply touch-up paint, be sure to check all warranty and installation requirements and resources with the metal panel manufacturer. They can help ensure you get touch-up paint that matches the paint originally used on your panels and that you take the right steps to ensure warranties remain intact. MBCI offers metal panel touch-up paint for industries and applications including:

For more on metal roof and wall panel finishes, colors and touch-up paint techniques, contact your local MBCI representative.

How Metal Panels Support Eco-Friendly Building Practices

Posted on March 25, 2019 by MBCI

The eternal struggle for contractors: to go green or not green? Profit or purpose? The good news is that with metal panels, eco-friendly building is not only possible but profitable, making the choice a no-brainer. Today’s metal panel systems look great and prove to be incredibly sustainable, enabling homeowners and contractors to reap the benefits of going green.

In fact, in today’s building and design market, increasing energy efficiency while reducing energy and maintenance costs are key drivers for a building design’s overall success. The metal panel market offers a number of products to support sustainability efforts, including recyclable metal roof and wall panels and energy-efficient insulated metal panels. Here we’ll take a look at a few of the key ways in which metal buildings and metal building components support enviro-friendly building.

Longer Lifespans

The documented longer lifespans of metal roofing systems (they can last 40 to 50 years) mean lower instances of re-roofing and repair jobs, thereby reducing energy required from such actions as manufacturing of parts, shipping or even energy expended by crews traveling to and from a jobsite.

Recyclability

Every piece of metal scrap can be recycled. That statement speaks for itself but from an economic standpoint, that equates to reduced jobsite costs since there’s no need to cart away or dispose of unused wood or masonry materials.

Energy Efficiency

According to data from ENERGY STAR, heating and cooling can account for up to 50% or more of a home’s total utility consumption. The use of metal roofing can help with energy efficiency through solar radiation reflection such as with unpainted metal and by increased re-emittance of solar radiation with pre-painted or granular coating metal roofing systems.

As one example, cool metal roofs use coatings with known radiative properties that are specified in order to keep the roof surface temperature lower than it would have been with uncoated or traditional roofing materials during peak sun times.

Sustainability Certification

Metal building materials can be used to help contribute to earning USGBC LEED credits through a number of ways based on the latest LEED v4 categories and criteria, including sustainable sites, energy and atmosphere, materials and resources, and indoor environmental quality.

For these reasons and more, metal panels and components lend themselves to the best that sustainable building has to offer, protecting the earth and protecting the bottom line. Visit us at mbci.com to find more resources on how metal building construction can be the smart choice in your next sustainable building project.

Project Services for Metal Buildings and Roofing: Part 2

Posted on March 11, 2019 by MBCI

In our last blog posting, we identified the project services that are available from MBCI and the typical process that contractors for metal buildings and roofing might experience in using them. In this posting, we will take a closer look at why so many contractors are taking advantage of these very helpful services and reaping multiple benefits.

We start by pointing out that, while it hasn’t historically been well-known that these project manager led services are available, things are changing. MBCI in particular has seen a 40 percent increase in service requests in just the past 2 years! The biggest growth has occurred in the areas of custom designs, high-end architectural buildings, and projects that use insulated metal panels (IMPs). Nonetheless, it has been recognized that virtually all types of projects benefit from these services. Therefore, it should come as no surprise that the combined MBCI project management teams are servicing 100 to 150 projects at any one time.

While it is hard to pinpoint why this impressive growth is happening in the use of project services, there are some commonly reported advantages such as the following:

Single Point of Contact: By having a designated project manager at the manufacturing company, communication is direct and streamlined. Further, the project manager takes care of everything from start to finish in regards to the metal building or roofing package. That means the contractor is freed up to focus on the site-specific aspects of the installation without needing to worry about managing the process on the manufacturer’s end.

Applicability: The range of building types that have benefitted from these services is all-encompassing, indicating that these services are applicable to virtually any metal building or roofing project. Project service teams are experienced in virtually all types of non-residential construction including commercial, retail, hospitality, institutional, schools, higher education, hospitals, government buildings, and many more.

Regional Expertise: The MBCI project service teams are organized so that they can focus on one of four specific regions of the United States. That means contractors receive attention from people who understand localized concerns.

Assistance During Design: When architects and engineers need some information on using metal building or roofing systems, the project manager can, as a courtesy, assist the contractor in providing design assistance. This includes helping designers become more familiar with metal product offerings and generally to become more informed and up to date on options. There is never an intent to lead the design or move the project in any particular direction.

Price Quotes: This is often the biggest and most noted benefit of working with the project service team. By having a relationship with a manufacturer, accurate quotes can be obtained quickly to allow bid deadlines to be met with a clear understanding of scope and confidence in the numbers.

Engineered Drawings: The ability to provide complete, engineered drawings is a big advantage instead of needing to find a local engineer take on that task.

Detailed Bill of Materials: All of the take-offs and ordering are done right from the information prepared by the project services team. There is no need for the contractor to spend the time on a separate take-off.

Scheduling Flexibility: The project manager can work with the contractor and work out a production, fabrication, and delivery schedule that meets the needs of the project. For large projects, this might mean phasing delivery of different parts of the package to suit the overall project schedule. Overall, projects have been done with coordinated schedules that are as short as 2 months, or phased up to 2-1/2 years.

Full Erection Drawings: Along with the full package of building materials, a full set of erection drawings are provided that serve as a virtual “installation manual” to help streamline the work in the field.

There are certainly other reasons for using these project services, but considering that most contractors don’t have the capabilities to do all of these things in-house, it can be a real time and money saver to take advantage of them from the manufacturer. Once contractors become aware of the availability of these services and the streamlined results, they often sign up for them repeatedly.

To find out more about how to successfully take advantage of these services and work with a project manager, contact your local MBCI representative.

Project Services for Metal Buildings and Roofing: Part 1

Posted on February 25, 2019 by MBCI

When a metal building or metal roofing project is being developed, it all starts with a design by an architect or engineer that may be rather standard, very custom, or somewhere in between. At some point a price for the metal portion of that design is requested from the contractor (i.e. an erector or sub-contractor to a general contractor) and of course that means turning to the metal building or roofing manufacturer for help. Toward that end, MBCI offers a complete range of project services designed to streamline everything that needs to happen next in order to genuinely make life much easier for the contractor.

What are these services? Essentially, there are four:

Estimating and price quoting services for public or private bids
Engineering services for the metal building systems involved
Drafting services for creation of shop drawings and erection drawings
Overall project management of all of the above plus coordination of production, shipping, and delivery.

The key to the success of these services is the assignment of a project manager who acts as the single point of contact between the contractor and the manufacturer throughout the entire project. Having a relationship with a metal building manufacturer who can assign such a project manager right up front is a huge benefit to the contractor. Here’s how the process might work in a standard project:

Cost Quote: The project manager will use the architectural drawings (submitted by the contractor) to have the project services team generate a lump sum price. That price is limited specifically to the metal building or roofing package with a clear description of what is included and what is not. That allows the contractor to develop the remaining costs for labor and equipment to erect the metal building along with any separate project costs as appropriate.

Detailed Drawings: Assuming the contractor is selected to proceed with the work, then an agreement on full project services can be made. Based on the architectural and/or engineering drawings, the project manager will then arrange for the detailed shop drawings to be prepared (including engineering stamp or seal if needed) so they can be submitted to the architect for review and approval. Note, that this will be a requirement of the manufacturer as well since they will not do take-offs from other people’s drawings for their manufactured systems. The shop drawings will notate all of the required components necessary to install and MBCI will order plus deliver all items required upon request/approval.

Scheduling and Production: Once all of the drawings are approved, then a full production schedule can be prepared with delivery dates identified. The project manager will oversee and coordinate the various people involved to see that things are progressing as planned and intervene as needed if any changes come up from the architect, owner, contractor, or manufacturer.

Delivery and Installation: When ready, the metal building package can be prepared and delivered according to the contractor’s schedule. Full erection drawings will be included which have enough detail that they are a virtual “instruction manual” for putting the building together.

That’s the typical process. In our next blog post, we will discuss the many reasons that contractors are taking advantage of these project services to save them time, money, and hassle. In the meantime, to find out more about how to successfully work together with MBCI, contact your local MBCI representative.

Insulated Metal Panels Achieve High-Tech Design Aesthetics

Posted on January 8, 2019 by MBCI

Equipped with the latest tools and technology available, the innovative medical practice known as Urology of Virginia has a long history of diagnosing and treating all urological conditions with the highest quality of care. Over the years, this commitment has resulted in a larger number of patients, requiring the practice to expand their Virginia Beach facilities to service a growing community. The expansion includes a three-story, 44,000 square foot medical office building that features an imagining center with an MRI and CT scanner on the first floor, an ambulatory surgery center on the second floor and space for a cancer clinic with twelve exam rooms on the third floor. The new facility is expected to increase the number of jobs within the community, including 32 physicians and more than 200 other staff members who can work together to provide patients with the most effective treatments and therapies.

The Urology Medical Office Building utilizes insulated metal panels to provide the highest standard of quality and energy efficiency.

The Design Challenge

When designing the new building, the architect, PF&A Design, was challenged to create a high-tech aesthetic concept rather than continuing the traditional use of brick facades found on the existing structure. At the same time, the architects needed to maximize the land available to accommodate the addition of the new building. To avoid wasting space and maximize the footprint of the facility, the new building is placed only about 2 inches from the existing one. This required PF&A to work closely with the local code officials to ensure all codes and regulations related to fire separation and area requirements were satisfied to avoid any construction delays.

The Solution

After reviewing the options, the architects selected metal as the primary exterior building material since they were able to readily provide a more modern and sleek facade appearance. And since fire safety was of great importance, the architect decided to utilize insulated metal panels (IMPs) as they more effectively help slow spread of flame and smoke when compared to non-insulated metal panels. In addition, they found that IMPs offered many advantages over traditional building materials. In particular, the IMPs provided the highest standard of quality and energy efficiency for the new structure which improved the overall building performance. They also include sustainability features which satisfy LEED requirements.

The combination of the corrugated panels in the main entrance and stairwells and the smooth panels for the third floor was key in adding visual interest.

The Design Specifics

In the final facade design, PF&A Design incorporated 12,500 square feet of a combination of MBCI’s deeply corrugated 7.2 Insul-Rib™ insulated metal panels with smooth CF Architectural Horizontal insulated metal panels, all in 22-gauge Signature^® 300 Silver Metallic. The 7.2 Insul-Rib™ insulated panel combines a rib panel design with a premier polyurethane foam core that delivers superior insulation. The CF Architectural Horizontal features stucco-embossed interiors and exteriors that contrast and complement the ribbed panels very nicely. The supremely flexible CF Architectural Horizontal insulated metal panels were also positioned with patterns aligned with the windows on the two floors below to provide enhanced symmetry and cohesion. The flat appearance of this panel provided the flexibility that enabled the corners to continuously wrap around the building.

Conclusion

Without the versatility and high performance of the IMPs used on this project, and the alternative might have been selected that would have proven to be less functional and less aesthetically pleasing. To find out more about how to successfully incorporate IMPs into a building design that you are engaged in, contact your local MBCI representative to get more information. Learn more about this project here and sign up for our newsletter to subscribe to our blog.

Standard Testing For Metal Roofing – Part 2: Air and Water Resistance

Posted on August 7, 2018 by Jason Allen

In a prior post, we discussed the importance of independent (i.e. third party) standardized testing as a means of verifying the performance of metal roofing, and specifically looked at structural and wind uplift performance. In this post, we will similarly look at testing standards but focus on metal roofing tested for air leakage and water penetration.

Air Leakage and ASTM E1680

Keeping air from passing through a building system from the exterior to the interior (i.e. drafts) is a fundamental role of any building envelope system, including roofing. It is also important in controlling the flow of harmful airborne moisture into a roof assembly. Hence, testing a roofing panel for its ability to control air leakage is critical to the long-term success of the roofing system, and ultimately, the building.

ASTM E1680 “Standard Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel Systems” is used to determine “the resistance of exterior metal roof panel systems to air infiltration resulting from either positive or negative air pressure differences”. It is a standard procedure for “determining air leakage characteristics under specified air pressure differences”. The test is applicable to the field portion of any roof area including panel side laps and structural connections but not at openings, the roof perimeter, or any other details. The test is also based on constant temperature and humidity conditions across the roofing specimen being tested to eliminate any variation due to those influences.

The standard test procedure consists of “sealing and fixing a test specimen into or against one face of an air chamber, supplying air to or exhausting air from the chamber at the rate required to maintain the specified test pressure difference across the specimen, and measuring the resultant air flow through the specimen”. Basically, the test is meant to reveal the ability of the selected roofing panel to resist the difference in air pressure between the two sides and thus demonstrate its air tightness.

The beauty of this standardized test is that different metal roofing products can be tested under the same conditions and compared. The standard calls for a pressure differential between the two sides of positive and negative 1.57 foot pounds of pressure per square foot of panel (75 paschals of pressure) and can be tested in the negative pressure mode alone if the roof slope is less than 30 degrees from horizontal.

MBCI’s metal roofing products are tested to confirm an air tight and water-resistant roof.

Water Penetration and ASTM E1646

In addition to air leakage, water leakage in roofing systems is obviously not desired. To test the performance of metal roofing products in this regard, ASTM E1646 titled “Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference” is the norm. This standard laboratory test is not based solely on free running water, but on water “applied to the outdoor face simultaneously with a static air pressure at the outdoor face higher than the pressure at the indoor face, that is, positive pressure”. This pressurized testing is intended to simulate wind-driven rain and flowing water that can build a head as it drains. The test measures the water-resisting properties of the roofing in the field of the roof panels including panel side laps and structural connections. Just like air testing, it does not include leakage at openings, perimeters, or other roofing detail areas.

The test method itself consists of “sealing and fixing the test specimen into or against one face of a test chamber, supplying air to or exhausting air from the chamber at the rate required to maintain the test pressure difference across the specimen, while spraying water onto the outdoor face of the specimen at the required rate and observing any water leakage”. Hence, it requires the air and water to be supplied simultaneously and for the testers to observe and document the rate of water leakage under the test conditions.

The test parameters typically require at least 20 gallons of water per hour (gal/hr) overall with between 4 – 10 gal/hr in any quarter section of the tested specimen, all at specified air pressure differentials. Given that this is a fairly stringent test, it is fair to say that metal roofing that holds up under these test conditions will likely perform well under most weather conditions when installed on a building. Typically, manufacturers have developed metal roofing products with seaming and connection methods that allow them to pass this test with virtually no observable water penetration.

To find out more about the tested results of metal roofing products you may be considering, contact your local MBCI representative or see the MBCI website and select the “testing” tab under a selected product.

Standard Testing for Metal Roofing – Part 1: Structural Performance and Uplift Resistance

Posted on July 9, 2018 by Jason Allen

When selecting a metal roofing product, there is an expectation that it will perform as intended over the life of the building. But what assures building owners, code officials, or design professionals that a product will in fact perform as promised? This question often comes up in building product discussions and the accepted way to answer it is to subject the products to physical testing. The type of testing is usually very specific to the product based on protocols and procedures developed by independent agencies such as Underwriters Laboratories (UL), ASTM International, or others. Manufacturers typically submit their products to independent testing labs who follow these standard test procedures. Once testing has concluded, they report the results back to the manufacturer. These results then show whether the product meets stated performance criteria or not. If not, the manufacturer can re-design and re-test until it does and then make the final results available to the public.

For metal roofing, a series of relevant and important tests are typically performed. In this blog, we will look at two of them related to structural performance and wind uplift.

ASTM E1592

The structural integrity of metal roofing is crucial given the various natural forces that can be imposed on the materials. Effects from wind, snow, or other conditions can compromise its integrity. Accordingly, the ASTM Committee E06 on Performance of Buildings (including sub-committee E06.57 on Performance of Metal Roof Systems) has developed ASTM E1592 “Standard Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference”. While the standard acknowledges the use of computation (i.e. calculations) to determine the basic structural capacity of most metal products, it also points out that some conditions are outside of the scope of computational analysis and hence need to be tested.

The standard describes a test method with “optional apparatus and procedures for use in evaluating the structural performance of a given (metal) system for a range of support spacings or for confirming the structural performance of a specific installation”. As such, it is very specific both to metal roofing and its installation. This test method uses imposed air pressure not to look at air leakage but simply to determine structural reactions. It consists of three steps:

1. Sealing the test specimen into or against one face of a test chamber

2. Supplying air to, or exhausting air from, the chamber at the rate required to maintain the test pressure difference across the specimen

3. Observing, measuring, and recording the deflection, deformations, and nature of any failures of principal or critical elements of the panel profile or members of the anchor system

The test needs to be performed with enough variation to produce a load deformation curve of the metal and account for typical edge restraint (fastening) representative of field conditions.

Manufacturers need to submit different products that are tested at least once at two different span lengths between supports. Standing seam roof panels are typically tested at a 5’-0” and 1’-0” span. Spans between the two tested spans can be interpolated. The result is a table of tested loading results that can be compared to code required or engineered design loading to then determine if the selected material and spacing are adequate for the project needs or if another product or spacing is needed.

MBCI’s metal roofing products undergo a series of tests to ensure maximum resistance and performance.

UL 580

The ASTM E1592 test is focused on the structural integrity of metal panels. It also uses positive and negative air pressure in a static (i.e. non-moving) condition to determine performance. There is also a separate concern about how metal roofing will perform in a dynamic condition as would be expected in a windy condition where wind gusts can ebb and flow erratically. In that regard, a separate test developed jointly between Underwriters Laboratories (UL) and the American National Standards Institute (ANSI) looks at the ability of roofing to resist being blown off a building due to wind. Known as ANSI/UL 580 “Standard for Tests for Uplift Resistance of Roof Assemblies”, it has become the recognized means to identify and classify the suitability of roofing for different wind conditions – low to high.

This test is also specific in its scope and intent stating that it “evaluates the roof deck, its attachment to supports, and roof covering materials”. It also points out that it is not intended to test special roof conditions, main or secondary structural supports, or deterioration of roofing. The standard prescribes in considerable detail the type of test chamber that needs to be constructed and used for the testing which includes three sections: “a top section to create a uniform vacuum, a center section in which the roof assembly (i.e. deck, attachment, and roofing) is constructed, and a bottom section to create uniform positive pressure”. The test procedure is then based on placing the roof assembly into the test chamber and subjecting it to a prescribed sequence of 5 phases of oscillating positive and negative pressure cycles (simulating dynamic wind conditions) over 80 minutes of total testing.

There are four wind uplift classifications obtainable for a tested assembly based on the test assembly retaining its attachment, integrity and without any permanent damage. These include Class 15, Class 30, Class 60, and Class 90. Each class has its own requirements for test pressures with increasing pressure as the class number increases. Higher class numbers indicate increasing levels of wind uplift resistance. Note, that to obtain a Class 60 rating, the tested assembly must pass the Class 30 test then be immediately subjected to the Class 60 test sequence. Similarly, to obtain a Class 90 rating, the tested assembly must first pass both the Class 30 and 60 tests. Metal roofing manufacturers who want their roofing products tested and classified under UL 580 must pair them with standard roof deck and fastening materials. Hence most have many different tests performed and results reported accordingly.

When reviewing metal roofing options, it is comforting to know that most manufacturers have tested their products and designed them to meet or exceed minimum requirements. To find out more about tested results of products you may be considering, contact your local MBCI representative or see the MBCI website and select the “testing” tab under a selected product.

Sealing the Deal: The Importance of Properly Sealing the Building Envelope Using IMPs and Single-Skin Panels

Posted on June 29, 2018March 30, 2022 by MBCI

The primary purpose of a building’s envelope (roof and walls) is to protect the building’s interior spaces from the exterior environment and provide the desired exterior aesthetics. Whether choosing insulated metal panels (IMPs) for their superior performance or, instead, looking to the wide range of aesthetic choices available with single-skin panels—or some combination of the two—the common goal must always be to protect the building from the potential ravages of water, air, vapor, and thermal/heat. By ensuring proper installation of metal panels and, thereby, properly sealing the building envelope, problems can be mitigated, efficiencies maximized, and the integrity of the building protected.

Here, we’ll briefly consider the benefits of each panel, and some key considerations relative to their sealant needs and capabilities.

Insulated Metal Panels (IMPs)

IMPs are lightweight, composite exterior wall and roof panels that have metal skins and an insulating foam core. They have superior insulating properties, excellent spanning capabilities, and shorter installation time and cost savings due to the all-in-one insulation and cladding. In effect, IMPs serve as an all-in-one air and water barrier, and are an excellent option for retrofits and new construction. With their continuous insulation, roof and wall IMPs provide performance and durability, as well as many aesthetic benefits.

IMPs offer excellent R-value and improve energy efficiency to the building envelope.

Generally speaking, because of the nature of the joinery, it is easier to get a good seal in place with IMPs given their relative simplicity (i.e., putting the two pieces together with the sealant). They require great attention, though, in terms of air and vapor sealing—aspects largely controlled by the installers on a given project. As an example, vapor sealing in cold climates or applications is critical to the overall soundness of a building. Consider the damage a building could incur if moisture seeps into a panel and becomes trapped; it if freezes, it could push panels out of alignment. This would result in not just an unattractive aesthetic, but a performance failure as well. In order to be effective, all sealant and caulking must be fully continuous.

Single-Skin Panels

Single-skin panels, alternatively, offer the advantage of an expansive array of colors, textures and profiles. They are also thought to have more “sophisticated” aesthetics than IMPs. Single-skin panels are available in both concealed fastener and exposed fastener varieties, and are part of an assembly. They can be used alone or in combination with IMPs, and as long as the needed insulation is incorporated, single-skin panels can meet technical and code requirements, depending on the application. Single-skin products offer a wide range of metal roof systems and wall systems as well.

Getting the proper seal on single-skin panels may require extra sealants or closures, and have more parts and pieces that have to come together to create the seal. However, when properly installed and sealed, they can provide excellent performance in their own right. Some key caveats include ensuring panel laps are properly sealed with either tape or gun butyl sealants, and carefully inspecting air and water barriers for proper installation as well as penetrations through the wall for sealing/fire caulking prior to panel.

In most cases, following the details for the most common conditions will give you a successful and high-performing outcome.

Regardless of the type of metal panel used, taking the time and effort to ensure the sealing and caulking details are properly handled, metal buildings can protect the built environment and provide long-lasting quality and performance.

Level of Development (LOD) BIM Specifications for Metal Buildings

Posted on August 21, 2017 by MBCI

When designing and constructing metal buildings, an increasing number of professionals are using a computerized building information model (BIM) as their primary tool. This allows for detailed, three-dimensional computer models to be created, not only to develop the design, but to identify material lists, coordinate details, avoid conflicts between building systems and streamline the design and construction process.

Problem: BIM Coordination

Of course, design is a process that requires some back-and-forth between multiple parties to arrive at the best final solution. So, when a metal-building supplier or manufacturer is asked to provide their information to be incorporated into a BIM process, the question that naturally comes up involves the level of detail. This is common across all trades, and fortunately, there is an organization that is addressing this issue. Known as the BIMforum (www.BIMForum.org), is is the not-for-profit United States chapter of buildingSMART International, and its mission focuses on improving BIM technology, collaboration, education, innovation and open information exchange. As they describe themselves, “Co-sponsored by the Associated General Contractors of America (AGC) and the American Institute of Architects (AIA), BIMForum seeks to lead by example and synchronize with counterparts in all sectors of the industry to jointly develop best practice for virtual design and construction.”

Solution: Level of Development (LOD) Specification

A flagship publication of BIMForum is the 2016 version of Level of Development (LOD) Specification. Having evolved over several years, this publication is “a reference that enables practitioners in the AEC Industry to specify and articulate with a high level of clarity the content and reliability of Building Information Models (BIMs) at various stages in the design and construction process.” Coordinated with other industry standards, it “defines and illustrates characteristics of model elements of different building systems at different Levels of Development.”

Essentially, it defines and standardizes how much detail is expected in a building information model at different stages of design development. Therefore, if a metal-building manufacturer or any other trade is asked to supply its BIM information, then it needs to ask “What Level of Development?” so that is it providing the right amount of information to coordinate with the larger computer model for the building.

How LOD Works:

The LOD Specification is based first on the familiar Uniformat specification sections used by most spec writers. Metal Buildings commonly fall under Special Construction in Section F1020.40 in the Uniformat approach, or 21-06 10 20 40 in the Omniclass approach, and are found that way in the LOD Spec. From there, five levels of detailing are described by the numbers 100, 200, 300, 350 and 400, as described further below.

LOD 100 – This is the most basic of model, described as “Generic mass of special structure with system typically noted with a design narrative for conceptual pricing.” It is likely that this level of BIM is already developed by an architect or engineer and given to a manufacturer or supplier as a starting point.
LOD 200 – This level calls for basic primary structural member sizing, generic representation of secondary framing, and general cladding and exterior trim to be provided, including openings.
LOD 300 – More-specific sizing of all needed primary frame structural members, web tapers, frame connections and similar details are called for at this level. Similarly, secondary framing needs to be shown, including purlins and bridging, girts, subframes and base conditions. Exterior panel and trim with actual profiles, actual openings and all significant trim and accessories are shown here.
LOD 350 – This level starts to show coordination with other elements or building systems. Therefore, for the primary structure, things like base plate locations, bracing/gussets, clips and any reinforcement all need to be included. Secondary framing elements need to include similar details, such as nested members, connections to primary structure, any miscellaneous or secondary steel members, bridging, etc. Cladding and exterior trim would include all actual profiles, closures, downspouts and all minor trims shows at least generically.
LOD 400 – This is the full-fabrication level equivalent to shop-drawing level of detail. As such it includes all final details, including welds, bolts, holes, cinching and all other details of fabrication and assembly for primary and secondary framing, plus all cladding and trim.

Level of Development (LOD) Specification Example – image courtesy of BIMForum.org

By using these standardized Levels of Development, all design and construction professionals can proceed in an orderly sequence to provide the appropriate information, receive coordination feedback and then move on accordingly to the next level.

The full 2016 LOD Specification can be downloaded for free at http://bimforum.org/log/. The specific information for Metal Building Systems can be found on pages 177–186. For information on how to work with a manufacturer to provide the appropriate BIM information, contact your local MBCI representative.

Knowing When to Call the Metal Manufacturer: Part 2

Posted on May 1, 2017August 15, 2024 by MBCI

As stated in Part 1 of this series, the success of a metal roof or metal wall project can rest on the installer knowing when something isn’t working or just doesn’t seem right. When that happens, a call to the manufacturer is not just suggested but is really imperative to ensure any potential problem is averted before it’s too late. In addition to the previously discussed scenarios, such as damage to the physical panel or problems with the fasteners, let’s take a closer look at a few other common circumstances under which MBCI recommends immediately reaching out to the manufacturer:

Alignment and Substrate Issues

It is the installer’s responsibility to verify the substrate and check for proper alignment before attaching any sheeting materials. If the installer notices any issues of this sort (either before installation or once they start putting on the sheeting), they should stop and address them immediately. This might include oil canning or other irregularity in the appearance of the panel. The installer should investigate the source. If unable to identify and properly remedy the situation on their own, then a call to the manufacturer’s support team is recommended. They may be able to suggest items to check to help locate the source of the problem—whether it be installation or manufacturing—and from there make suggestions as to the best possible means to address the situation.

Accessories

When physically getting ready to modify a panel system by adding things to the roof (such as snow guards or mechanical curbs) or to walls by installing doors, windows and louvers, these penetrations can have an impact on the system and its weather-tightness and appearance. Oftentimes, other trades—who may or may not have knowledge of the sheeting system—are coming onto the job to perform the accessory installation. It’s wise to visit with manufacturer prior to installation and/or alert the non-metal panel installer of precautions to take when adding accessories.

The pipe penetration shown here is not the correct type of piping for metal roofing, and not the correct installation. This can lead to issues with roof performance, including leaking and water damage.

Coordination regarding material types of accessories, fasteners and placement is critical. There are materials that can react negatively with the installed system and lead to damage as well as void manufacturers warranties. Accessories should always be discussed prior to installation. Read more about different types of roof accessories and penetrations in MBCI’s blog article, Roof Penetrations Made By Non-Roofing Contractors.

Panel Engagement

Panel systems have an engineered means by which the panels attach and engage one another as shown in the manufacturer’s installation manuals and project drawings. If at any point the panel will not engage as depicted in the details, installation should be halted and reviewed to determine the cause. This can require a call to the manufacturer to help determine if the matter is site and substrate related or potentially a manufacturing issue.

Do not continue to install the system if the laps are not nesting properly, clips are not engaging as detailed, panel modularity cannot be controlled or if the overall panel is not “resting” on the substrate such that there is excessive bowing and stress in the panel. This is the time to call the manufacturer, as once the material is completely installed, it is much more difficult to determine the cause of a problem and is potentially more expensive to remedy. Additionally, in many cases, full installation constitutes acceptance of the product and the manufacturer’s hands could be tied or extremely limited in being able to assist in remedying after the fact.

By knowing when to be proactive with a call to the manufacturer, installers can mitigate many types of potential pitfalls. And if you’re just not sure, it’s best to call.

For more information on metal roof and wall products and training, MBCI offers courses through its Metal Institute. These courses are available for general training purposes or for those seeking installer certification.