Photo:www.pontchartraincs.com
Member manufacturers of the American Architectural Manufacturers Association identified 40 common installation miscues in a recent 317-page technical report on the proper installation of windows and doors. Here’s a summary of the most crucial cautions:
• Never block weep holes with sealant or any other material that will keep water from draining properly.
• Don’t drill through window or door frames to apply alarm systems. Doing so may allow water to penetrate into places where it can't get out.
• Don’t apply film to the glass without first consulting the window or door manufacturer. Film may lead to heat buildup and glass breakage.
• Don’t block the drainage path (weep holes) at doors when used in conjunction with patios involving brick, stone, or concrete pavers. When necessary, use a starter sill, or shim the door high enough to clear any obstructions.
• Don’t block breather holes with sealant on dual-sash units. Breather holes are there to allow air circulation.
• Always seal metal-to-metal joints. Also, make sure end dams are sealed properly on sub-sills.
• Use compatible sealants that are meant to allow for movement due to expansion, contraction, or displacement between stories. Also, know the sealant maker's guidelines for maximum and minimum temperature when applying sealant.
• Don't use the finished window or door opening as an access for material delivery. This often results in the build-up of debris inside the frame and can cause damage to window frames and door thresholds.
• Make sure the framing surfaces are protected from corrosive materials such as mortar or sulfuric acid, which are commonly found in many external cleaning solutions.
• Be careful when welding after installation. Shield the glass and frame from weld flash to avoid damage.
AAMA Standard Practice for the Installation of Windows and Doors in Commercial Buildings (317 pages) is available to AAMA members for $50; $100 for non-members. Order at: www.aamanet.org.
