I have crushed rocks in my crawl space so I installed Felt 550 to protect the vapor barrier in that part of my crawl space where I mostly walk or do some work and it feels so much safer there that I would advise anybody to install it everywhere possible just to be on safe side.

Ordered and received 5'x100' felt for installation in my home, as a consumer. It came shrink-wrapped on a roll, probably weighing 25 lbs. I was a little disappointed to find the product measured around 50" wide. It was hardly 5 feet wide as advertised. We didn't measure the length of product, but doing some rough math it probably measured 120-130ft or so. In either case it exceeded the 500 sq.ft. I expected.



I was concerned the narrow product would have a tendency to shift under foot/knee traffic in the crawl, prior to and during installation of the vapor barrier. Installation was simple. We secured the strips together with Gorilla Tape and it held very well. There was virtually no shifting. I would recommend this step.



Strength, thickness and cushioning provided by the felt are impressive, and will absolutely protect your vapor barrier from any sharp objects in the crawlspace. I would argue this product is probably more important than buying a high-dollar and/or high-mil barrier. We covered it with 6mil visqueen.

I used the Felt 550 to protect my vapor barrier from the crushed stone that lines my crawl space. I was very impressed with how strong it was. It was super simple to put down. I did put landscape staples through it to hold it down. It was challenging to get them through the felt. But a little hammering helped get them through. I really debated wether to use the felt but I am glad I did.

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.