Radon / Discussions

How do you lower high radon levels in a basement?

...Radon test result is 7.5pCi/L . What should we do and how much it will cost? Can you please suggest us what should be done. House is in very good condition. Rad...

Posted by Uma Parekh May 22, 2020, 11:54 a.m. Healthy indoor air quality 1 Responses

Should I test my home for radon gas?

...radon gas in homes Mitigating radon gas in water My question was- is it best to check for radon AFTER tightening the home, rather than before, if one is goi...

Posted by Mary Anne S March 5, 2019, 7:46 p.m. Radon in Homes - Mitigation 4 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...radon at 4.0. So... I'm thinking a layer of washed gravel in the cellar is necessary to allow the water to flow to the sump. Then a radon-rated vapor barrier on...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 Responses

Does a low radon air reading necessarily = low radon in well water?

...radon in your water, but I wouldn't consider it conclusive. Here is our page on radon gas in water that would be a wise starting place – How to remove radon g...

Posted by Steve Bull Jan. 4, 2020, 1:45 p.m. Radon in Homes - Mitigation 3 Responses

How do you install your own DIY radon mitigation system?

...radon? Here by the way are all our page all about mitigation – Testing for radon gas in homes and radon mitigation techniques for basements and crawlspaces ...

Posted by Ariel Fridman Jan. 27, 2020, 10:59 a.m. Radon in Homes - Mitigation 1 Responses

Should I install basement drain tile vents?

...radon levels, here is our page about mitigating radon gas in basements , have you ever tested for radon gas and are you in a high risk area? My description was ...

Posted by gary taube Dec. 11, 2019, 10:14 p.m. Foundation and basement improvements 3 Responses

How do you insulated a crawlspace with dirt floor?

...radon gas in homes, so see our pages on mitigating radon gas in basements , including how to remove radon gas from well water , in case you dig a well in the fu...

Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 1 Responses

Is polyiso board or styrofoam best for insulating when finishing a basement in CO?

...radon levels we now want to use the room more. It's currently completely unfinished, nothing on the walls - what's the best way for us to finish and insulate ou...

Posted by Evan B. Nov. 21, 2019, 8 p.m. Basements improvements 1 Responses

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...Radon barrier radon evacuation stack is mandatory . To continue about radon – exposure to radon gas in homes is the second greatest cause of lung cancer. Ther...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...radon gas membrane (See our pages on Radon barriers in basements for more information ). Then we would add rigid insulation panels , a stud wall with batts, and...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

I have many issues with my house where should I start?

...radon gas from basements and crawlspaces How to insulate a CMU cinder block foundation The best way to insulate a basement to avoid mold How t...

Posted by Bryan Squirrell Sept. 29, 2019, 3:08 p.m. Wall assemblies - renovation 1 Responses

Is EPS or XPS better for use in basement rim joists? Should faced or unfaced foam boards be used?

...radon barrier, when connections are foamed or taped. MPI is available in rolls or sheets. Optional T&G connections."

Posted by Thomas Dispenza Sept. 8, 2019, 12:43 a.m. Basements improvements 6 Responses

Can you use spray foam Insulation under a slab?

...radon barrier in a crawl space it’s a great choice, but in most other applications, and certainly with a slab on grade there are better ways. When an installer ...

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

How do I insulate my half below grade basement?

...Radon Gas in Homes

Posted by tom mckeand Oct. 14, 2019, 11:01 p.m. Basements improvements 1 Responses

What is the best way to Insulate the crawl space of an old home?

...radon barrier in a slab on grade .

Posted by Aj Jan. 21, 2020, 8:13 a.m. Crawl spaces 1 Responses

Can you provide Crawlspace Insulation Design Assistance?

...radon barrier as well. Insulating the joists is a fine idea, but I would be super careful about keeping the moisture levels down, that’s why I’d be thinking o...

Posted by Randy Christensen Dec. 10, 2019, 12:17 p.m. Crawl spaces 1 Responses

What can I do to prevent mold and musty smells from a crawlspace with a dirt floor?

...Radon contamination? If so that can be mitigated at the same time, so we always recommend that anyone with a dirt crawlspace floor first check the radon levels,...

Posted by bonna gordy May 15, 2020, 8:16 p.m. Crawl spaces 1 Responses

What is the best way to insulate the basement of an old house?

...radon gas, and are you considering a radon barrier ? If so, then leaving some excess poly along the bottom of the wall would allow you to marry it to a floor me...

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses