Radon mitigation / Discussions

...radon mitigation tube through the concrete slab (about 2' from the exposed earth) and weaves it's way to the roof (fan in attic). 3 of the crawl space walls are cinder block, and 4th is facing interior of home. In the 10x6 section, the builder laid down concrete extending from wall on the floor for about 5", while the ...

...Radon gas is dangerous to human health but odorless, so the only way to know if you have high radon in your home is to get a radon test kit. Learn all about high radon in homes and how to remove radon from homes here. You could also check this article for how to check if your home is in a high radon area. Whatever odor...

...Radon seal to provide a water and gas barrier before installing xps foam panels on the interior basement walls? Yes, to reduce radon levels in homes and have an effective radon barrier, you would need to seal all holes protruding through the radon barrier or membrane. And by that, please know I mean ‘do your best’ of c...

I have a 3 foot and 4 foot drop level crawl with a part basement attached. 650 square feet. It has sand floor and below grade concrete walls. the access to the crawl is from the part basement. i have take out old r10 batts that were in the floor joists. the crawl is vented with 2 vents. i live on the east coast of Vanc...

...radon gas contamination and remove it if levels are above recommended safe levels. Have you had your basement tested for radon and found high levels? Here are our pages on testing for radon gas and how to remove it from basements and crawlspaces. The product you mention, do you mean the Radon Block Membrane? That is no...

...radon barrier and passive radon stack installation video          This page will also be valuable – how to insulate and prevent mold in a crawl space The most important thing to do in a crawlspace is make sure it has a vapor barrier covering the dirt, which also acts as the radon barrier. Radon gas is heavier than air,...

...mitigation. Any increase in radon gas increases the risk of lung cancer, so there simply is no ‘safe’ amount. Removing radon at the source is always the most effective, that’s why sub-slab depressurization is one of the easiest ways to remove radon from existing basements that have no sub-slab radon barrier. Also, if y...

...radon and water running down the slope. Generally, the advice I've seen is to drill/pin rebar with epoxy and cover with concrete, but then how do you attach it to the vertical posts etc? There are a few ways you can go about building a foundation on a slope, piers (screw piles or helical piles) are one way but not gene...