radon

Hi All, I got a very high radon reading so will be adding a radon fan to a radon connection point outside our house. I just opened the connection point cap and saw that the connection point (and presumably all 4 sumps its connected to) are full of water - almost to the top! The sumps and radon...

Hi, New to this forum and I'm in the process in building an orangery. BCO have stated that I need to lay a Gas membrane. I've seen other comments on this site which are extremely useful. The attached image shows what I think should I need to do however I just wanted to know any thoughts...