Crawl Space Felt
A question we regularly get about this product; Is this product the same
thing as the roofing felt at Home Depot? No, it is nothing like the roofing felt
at Home Depot. Felt 550™ is a product designed to
protect the DrySpace™ vapor barrier from punctures
due to sharp rocks, concrete and metal in the crawl space. We highly recommend
removing these items before encapsulating your crawl space, but that may not
always be possible. Here's an example- Let's say someone in the past tried to
fix a standing water problem in the crawl space. And, instead of doing it right
they went to the local gravel pit and bought 10 yards of stone to put in the
crawl space. The cheapest stone that day was crushed rock, which has very sharp
edges. So with good intentions and terrible problem solving skills the crushed
rock found its way into the crawl space (for the record that will not fix a
standing water problem) So now the owner of the crawl space learns about
DrySpace™ and wants to fix it for good. Instead of
hauling all of the stone out of the crawl space you can install the Felt 550™
directly onto the crushed rock and then install the DrySpace™
to control the moisture.
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Felt
550™
5' x
50' 250 Sq Ft.
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So what else does the Felt 550™ do besides
protect your investment in the DrySpace™ vapor barrier?
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 DrySpace 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 DrySpace 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.
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