Tomb Posted April 21, 2011 Report Share Posted April 21, 2011 After installation of the Radon Reduction System and upon activation of the system the manometer had a good strong reading and then it went to just off zero. There is pea gravel underneath the slab. I have been told two things on this. One is that if you have really good air movement it might not show a good reading. This is rare but it does happen. The second was that if there is no reading then you have no suction. Does anyone have any insight to this problem. Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.