With its light weight and straightforward application, DuPont Styrofoam™ Brand XPS Residential Sheathing is easy for contractors to install. But like any building material, long-term performance relies on proper installation.
First and foremost, always follow manufacturer installation instructions. In addition, here are a few best practices to keep in mind.
1. Know how much to order: A common question is how much XPS board will be needed. But the answer is easy—it will equal the wood sheathing being specified.
2. Pay attention to wall anomalies: Builders will need to consider the added thickness foam board creates for areas like windows and bumpouts; it may impact how trim, flashing, and housewrap are installed.
3. Design the envelope as a system: Foam board is easy to install, but you want to make sure it’s properly integrated with the rest of the envelope. Pay attention to openings and other intersections—wider flashing or other detailing may be needed. Proper sequencing with flashing and housewrap also remains critical.
4. Specify the proper amount of insulation: Your DuPont rep has calculators that can help dealers and their customers select the amount of insulation needed to meet local codes for each climate zone.
5. Choose the right fasteners: There’s no one answer to the question “Which fastener should I use?” This will depend on the thickness and material of both the cladding and the substrate. Styrofoam™ Brand XPS Residential Sheathing can be used with any type of fastener, so follow guidelines of the cladding and substrate, then include the thickness of the XPS board as part of sizing considerations.
6. Lean on experts: Training and field support are readily available through DuPont’s robust network of Building Envelope Specialists. Reach out to them for education sessions and other resources.
Weyerhaeuser Distribution is committed to delivering the reliable, consistent products you can rely on. Connect with your Weyerhaeuser representative today about insulation solutions available in your market.
