1

I have installed a 4" oatley vent flashing and drilled holes in roof and walls with a 4-1/8 bit. Unfortunately the radon coupler out of the concrete is only 3". This was a plumbing mistake and long past. I am pretty sure I will just adapt from 3" to 4" so the roof flashing seals properly.

There is 3" pipe already ran to the attic from the basement. Should I rerun 4 inch pipe all the way from the concrete 3" coupler, or just use the adapter in the attic before I go out the roof?

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.