This worked great with my 12 Mil Crawl Space Vapor Barrier, GuardianLiner. Customer service was great and shipping was fast.

Glad I decided to lay felt on the ground before tackling the rest. I am doing a 3200 sq ft crawlspace. All dry/damp sandy type soil. Large areas a very cramped so I am crawling on my belly a lot. Laid felt across the entire ground. I can walk/crawl without all the dust-dirt-rocks getting all over everything. A real time saver, makes the installation of the vapor barrier much much easier.

The only issue was that some rolls seemed thinner than others, but they were all thick enough to provide a complete cover of the ground. This is a very strong material.

I probably didn’t need to use Felt 550 under 20 mil silverback, but I’m happy I did. Since radon mitigation was critical and added storage space was needed it provided the most durable solution with additional protection from any rocks I missed. It did make it much cleaner to install the vapor barrier which is a real plus.

 

This felt laid down quick and flat. We used gorilla duct tape to spot tack the seams so while we were crawling around we didn't pull the felt around. I'm so glad we spent the extra to put felt in the crawl space. It made putting the vapor barrier in so much cleaner and easy. The crawl space had rough gravel and the felt helped give an extra barrier between the gravel and our vapor barrier.

Good price, shipped very fast