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Q&A
- Does roofing tar paper act as a vapor barrier and how many layers?
- Should I close off the crawl space vents under my home in winter?
- Question about Solar heating and floor vents
- Should attic space over attached garage be blocked off for proper attic air sealing and ventilation?
- XPS and Its Long Term Efficacy
- Use of John Mansville unfaced insulation and Dow Thermax
- Best place to buy rigid foam insulation?
- Is one inch of XPS foam on the exterior of my walls enough?