Home buyers of insulation products should know what R-value means before they go through with the purchase. The “R” in R-value stands for the material’s resistance to conductive heat flow. The higher the R-value of the product is, the more effective it is at insulation. R19 insulation products are typically used to insulate 2×6 walls in homes classified by the US Department of Energy under climatic Zones 1 through 7. They’re also widely used for crawl spaces in Zone 2 and Zone 3 homes. Our staff will be happy to help you choose the right products from our wide range of R19 insulation options, which include faced and unfaced fiberglass insulation batts, among others. Find the best R19 insulation solution today, only at Pacific Insulation Supply!