Dranjer products let water flow into sumps and floor drains—but they seal out radon, insects, and odors coming from the sub-floor area. Dranjer products are passive, require limited maintenance, and last a lifetime.
Should you install a Dranjer before testing your home?
Yes! It is an inexpensive first step in reducing radon. It seals the single largest radon entry point. Test to determine if radon is now at an acceptable level with that one action; if after testing you find that radon reduction step wasn’t enough, your Dranjer valve is still an important component of your radon mitigation solution.