Used it for the support of 15mil vapor barrier. We put it approx every 12" although you can space them further we just had plenty. There is no removing them so make sure you drill deep enough to install them all the way in.

I was very pleased with the quality of materials and the relative ease of installation. You get high marks for quality, service, and an excellent website.

I covered my dirt crawl space, bought a Fantech fan, built a 4” exhaust system and a 3” intake system servicing the crawl space, lower concrete slab and the garden level concrete slab. We dropped our radon reading from over 9 to a little over 1. We used your plastic system along with your tape. We are pleased with the results.

Product is of good quality

Great product, I am using it to help seal off my crawl space from the ground due to Radon issues. I am using their Felt 550 under this to help protect it from sharp objects which might puncture a hole in it. But really it is pretty tough stuff with the reinforcing that is in it.