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Crawlspaces and Radon Mitigation Systems

Many Colorado homes have crawlspaces that can create a radon problem.

We can make your crawlspace a much cleaner space and restrict the flow of radon gas at the same time. When sealed, crawlspaces can be a great place to store items in your home. The vapor barrier helps to keep moisture, radon and mold at bay. RadoVent uses a thick 10 MIL plastic vapor barrier as the standard crawlspace membrane. This thicker plastic will give you much more life out of your radon mitigation system and seal of your crawlspace from soil vapors.

RadoVent installs a better crawlspace radon mitigation system:

  • Thicker plastic at 10MIL. (not the 6MIL polyethylene from the local hardware store)
  • Plastic secured to the walls with furring strips and nails. (not just caulked to the walls)
  • Sealed using high quality type designed for vapor barriers. (not duct tape)

How we seal crawlspaces to prevent radon gas

When we seal a crawlspace to block radon entry, we do it the right way. Our standard is to use a 10 MIL plastic vapor barrier which far surpasses the durability of the common 6 MIL polyethylene plastic. The seams of the vapor barrier are overlapped by 12" caulked and taped. Any column, pipe, or other obstruction is sealed by creating a plastic boot. The boot overlaps the plastic by more than 12" and is sealed and taped. The minimum standard for vapor barriers and radon mitigation is to simply glue the plastic to the concrete walls with caulk. We go a step further to ensure that the seal will last. We use furring strips and concrete nails to fasten the plastic to the foundation walls so that the seal will not be broken. 

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