Just used them and seemed to work fine. Easy install.

The large roll, 13.5' x 90', of silver back was easy to get into the house, cut and maneuver in the crawlspace. Easy enough for a DIYer.

We doubled up the extra material in the areas that will experience high traffic areas. Easy to install and maneuver.

Definitely recommend the product! Solved the house odor issues immediately. Worth every penny. The sketches provided by Larry were exactly what we needed to do the job right the first time without any "redos". Very happy with the product!

The foundation tape made the job easier than expected.