How much rigid foam can I add under new siding before needing to “build out” the existing windows?
Nihar writes from Chelmsford, Massachusetts: “I would like to change siding of my circa 1967 house. There is approx. 2 inches of fiberglass insulation in the walls. I would like to remove the existing shingle siding, blow-in cellulose insulation into the walls, add a vapor barrier and add rigid foam before installing vinyl siding. What is the maximum thickness of the rigid foam insulation can I add without “building out” the existing windows? I do not mind removing the exterior molding but removing and reinstalling existing windows would be an issue.” Answer: To be sure in your situation, we recommend measuring on site. For more information on how to install vinyl siding, visit the Vinyl Siding Institute’s Website at www.vinylsiding.org. If you aren’t aware of them, there are also siding products that can add insulating value. One such product is called the Polar Wall® Plus! Insulated Siding Panel. It is available to the trade through Norandex Distribution Centers.
Related Questions
- Do I need to uninstall the existing version of Acronis True Image Server 8.0 for Windows prior to installing the latest update or the full version I purchased?
- Is there a low cost way to port my customer’s existing PL/N application to run on a Windows Mobile machine?
- How much rigid foam can I add under new siding before needing to "build out" the existing windows?
