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Use- Protection for crawl space liners from sharp objects and to assist in soil gas mitigation under crawl space vapor barriers/liners. Now TWICE as THICK!
50"x 120'=500 Sq Ft

This product is subject to a UPS large package handling fee of $9.28 for the first roll of each vapor barrier kind/size.

Retail: $125.00
Price: $116.26
In stock
Availability: In Stock
Ships Next Day or Sooner™
FLT-550

Quantity:
Item #: FLT-550
Availability: In Stock
Ships Next Day or Sooner™

Felt550™ Has Two Significant Uses In A Crawl Space

Puncture Strength

The Felt550™ is made from virgin Polypropylene and woven into an lightweight and extremely punture resistant material. There is no organic material used when making this product so it will naturally resist mold and mildew growth. In fact, the Felt550™ was designed and engineered to be in contact with water and the earth 100% of the time. Putting all of these features together makes it perfect to use under a crawl space liner or vapor barrier to protect it from sharp stones, rocks and othe debris.

Soil Gas Mitigation

Crawl spaces are harsh environments and with that comes considerations in air quality. One of the most serious is Radon Gas, because it is a killer. The Felt 550™ plays an important roll in Radon Gas Mitigation. The Felt 550™ creates an air gap between the vapor barrier and the soil, enhancing the results of the active Radon fan(s). Allowing the fans(s) to keep a negative pressure on all parts of the crawl space floor and eliminating any "pockets" that seep the gas into the space.
The Felt 550™ also plays a key part in mitigating other soil gasses that cause odor. As we continue to do research on the best ways to fix the problems with air quality, energy loss and moisture levels we discover new problems and their solution. One of those new problems is soil gas odor(other than Radon Gas). This problem is not everywhere and it has nothing to do with our vapor barriers causing the smell (other plastics have been found to contribute depending on their makeup and additives). Like with Radon Gas, the Felt 550™ enhances the results of the fan to mitigate the odor.

For more information on this problem and how to fix it please call our office 877.379.7658.

  • Can be use on TOP of the liner for a "crawl way" path

Felt Strong


Overall Customer Rating of 50 Reviews:
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Michigan

Felt 550™ - Under Vapor Barrier Protection

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

great underlayment

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Pros:
  • easy to install
  • good thickness
Cons:
I have some uneven ground with some sharp rocks. I could really feel a difference crawling around before then after putting the felt down. Only installed about a month now, so can't speak to long-term use, but so far so great!

Savannah GA

Great Tear and Cut Resistant Liner

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I bought the Felt because my 125 year old crawlspace was littered with chunks of brick and the occasional broken piece of glass. It wasn't practical to try to remove all the debris. It was well worth the cost. This material is very tough; it was difficult to cut with anything except a very sharp utility knife blade. In addition to providing a great barrier, it also made the job much cleaner because I was able to roll it out and work on the felt instead of the dust and dirt.

Felt 550 under protection

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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.

Under Vapor Barrier Felt

Rating:
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Pros:
  • thickness
Cons:
We just installed he product so we can't make any claims as to its effectiveness, durability or longevity. The major drawback to this felt is how slippery the vapor barrier is over the felt. The plastic and the installer glide over the felt like melting ice making it a nightmare to work with. The unexpected sliding tendency caused me to slip and fall a couple of times trying to stand from kneeling to walk across it. There is still a lot for me to do under the house and the slippery environment is going to make the rest of my work even harder. If I had realized the felt would end up being a drawback, I would not have completely removed the old vapor barrier all at once. I now am fighting the clock and increased humidity levels in the crawlspace. If I knew the felt and plastic together would make installation so frustrating, I wouldn't have bought the felt.