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ArmRLite Advantage: Windload Ratings, Guide Rails and R-Values

ArmRLite Advantage: Windload Ratings, Guide Rails and R-Values

May 11, 2020

A building code is the foundation for all construction projects. Before an architect can draw a plan, before a contactor can erect a wall, and before a garage door installer can put in a door there is a building code. ArmRLite has extensive experience with building code requirements and providing overhead door products to meet them. Some examples include windload values and thermal performance requirements.

Garage Door Requirements: What’s in your Building Code?

Garage Door Requirements for Windload and R-ValueNot all building codes are the same and codes can vary depending on the type of project as well as its location and use. The most common building code requirement that ArmRLite deals with are projects requiring windload testing. Windload ratings, measured in pounds per square foot (PSF) or Miles per Hour (mph), reflect the amount of wind pressure or speed a sectional door can withstand before failure. This type of code requirement is important for areas of the country that experience high wind events like North and South Carolina. Windload ratings are a factor of a doors strength and size – the larger the door, the less of a windload rating you will achieve as there is more surface area. ArmRLite currently offers (2) windloaded aluminum models – Our Custom CI and our Titan Model. While maximum windload a product can withstand varies by size, ArmRLite can offer wind loading up to 180mph.

R-values and U-factors are becoming more common in building codes starting with the adoption of Title 24 in California. While not all codes require the NFRC labeling called out in Title 24, they may still require tested values and air infiltration requirements. ArmRLite can supply NFRC labeled and non-NFRC labeled insulated aluminum models depending on code requirements. It is important to know what value, if any, is required by code when dealing with thermal performance.

Finally, building codes may not always cover everything a project will need. In those cases, it’s important to know what your sectional door needs to achieve from the start. In the case of carwash projects, an often overlooked item is how a sectional door will close onto the car tire guide rails. While not part of the actual building code, having a door close securely in this situation can be a safety and security concern for the building owner and their customers. ArmRLite can provide custom carwash cut outs for the bottom rail of our aluminum doors for this very reason so our doors can close over the tracks and securely on the ground.

If you have any questions regarding our aluminum door options or if you need a quote, please contact us.

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