Tricks and tips for everyone


Can radon go through concrete?

Can radon go through concrete?

Radon, soil gasses, and water vapor will easily pass through any openings, cracks, gaps, drains, or thin concrete (rat slabs) in the basement.

What kind of pipe is used for radon?

PVC pipe
Typically 3″ pipe or 4″ pipe is used for radon mitigation systems. The EPA radon mitigation standards require the PVC pipe be schedule 40. This is due in part to the schedule 40 pipe being more rigid, and sound absorbent. 3″ pvc pipe is often used for systems that require a higher suction.

Can radon be vented through a wall?

An effective and affordable way to reduce radon levels in homes using side wall venting is now available from Tjernlund Products, Inc., the originator and leading manufacturer of side wall vent systems for gas and oil fueled heaters.

Which type of foundation has no risk of radon gas?

Earth-based building materials such as solid stone materials, cast concrete, concrete masonry, brick, and adobe ordinarily are not significant sources of indoor radon.

Does plastic stop radon?

Some builders believe that the plastic vapor barrier under the slab will stop radon. Although it is a part of the “radon-resistant” construction, it merely reduces the flow of soil gas. However, it cannot stop the diffusion of radon and its accumulation underneath the floor.

Does paint block radon?

As a chemically inactive gas, radon can diffuse through concrete, making sealing alone inconsistent at reducing radon levels. In our years of radon reduction experience, we have seen people use epoxy paints, waterproofing paints, concrete sealers and other substances to “seal” radon out of buildings.

What size should a radon pipe be?

Given that typical residential radon systems move 20 to 80 cubic feet per minute (cfm), 3 inch pipe is best suited for most system installations although 4 inch pipe can be quieter due to lower air velocities.

Does a radon vent need a cap?

In conclusion, putting a protective cap on the top of your radon system might sound like a good idea in theory. However, due to the factors discussed above and the fact that it is not necessary, it is something to avoid when installing a radon system in your home.

Can you run radon pipe horizontal?

If it terminates less than 10 feet horizontal distance below a window it could be a potential safety hazard. If it terminates less than 10 feet horizontal distance below a ventilated soffit or other air vent it could be a potential safety hazard.

Is radon common in slab foundation?

Yes, homes built on a slab can still have radon. Whether the home is old, new, insulated or not and regardless of construction materials it can have radon.

Can radon come through a slab foundation?

Is it possible for radon levels to be elevated in homes with slab-on-grade foundations? Absolutely. We came across two such houses this week, and thought it was worth mentioning because we often hear people say, “It’s not worth testing when there’s a slab-on-grade foundation”.

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