How to / Discussions

How do I waterproof a foundation from the inside?

...how to build basements properly - How to insulate a basement and protect it against water damage and flooding Bulk water directed towards your foundation wi...

Posted by Kurt Brenner Nov. 14, 2017, 9:47 a.m. Foundations and Basements 1 Responses

What is the best way to insulate a home from the outside?

...to the inside but also the outside of the walls so we don’t lose too much space inside. Do you have suggestions about how to go about this? I’ve read some of yo...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Can my shallow crawl space be converted to a slab foundation?

...to be too costly, remember that you can repair crawlspaces in most cases , see here for more info on that option, as well as how to mitigate radon gas – How t...

Posted by Sian O'Keefe Aug. 15, 2020, 12:52 p.m. Slab on Grade 1 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...to air . Basement walls are always cold but touching earth on the other side that could be 99% humid . So the wall needs to dry to the interior right ? How ...

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

How do you create a slab on grade on a slope?

...top and infill with a compacted stone topper at the bottom 2' you should be able to create your flat platform for the slab on grade. What you could also do is e...

Posted by Adrienne Rayna June 30, 2020, 3:58 p.m. New foundations and slab-on-grade 3 Responses

How do you insulate a crawlspace with dirt floor?

...to protect against radon gas. What would be you be advice as to how to proceed for insulation/winterization/moisture? At this point, I’m thinking to simply pu...

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

Is an HRV or ERV system best in a cold climate?

...how close we are to the lakes. So - this is where my question comes from - with all these factors and trying to keep the electricity load to a minimum because w...

Posted by Michael Duncan Nov. 14, 2019, 3:53 a.m. HRV and ERV 1 Responses

Do you recommend ERV or HRV system in mild climates or can do away with them?

...to modify the design. 1) Do you recommend installing one? 2) If so, any tips on how to go about it? or particular brands/systems you'd recommend? We always reco...

Posted by Babak K Aug. 1, 2020, 7:12 p.m. HRV and ERV 1 Responses

How do you fix a moisture problem in a finished basement?

...how to fix your basement, you really would need to remove everything and start fresh. We have many pages on how to build basements properly (which I will link b...

Posted by Margo MACFARLANE Oct. 28, 2019, 10:24 a.m. Foundation and basement improvements 1 Responses

Why do you say building on a slab is more ecological than starting with a basement?

...torage space, a laundry room, cold storage, etc. The way I see it is to build without basement is to decide to build bigger, meaning more materials, more extern...

Posted by Geri P Dec. 11, 2017, 11:45 a.m. Foundations and Basements 1 Responses

How much insulation should I install underneath my concrete slab in my basement?

...toba, and intend to install radiant heat in the concrete slab. As my basement is below the frost line, I’m not sure if insulation is necessary, but want to know...

Posted by Scott Antonation Sept. 27, 2019, 1:06 a.m. Slab on Grade 3 Responses

Lunos HRV - where can I buy them and get advice?

...to how close units can be to eave overhangs. Is the a consultant who could advise me in the Burlington Vt. area? Ductless HRV / ERV wall-insert ventilation syst...

Posted by martin tierney Nov. 16, 2019, 4:57 p.m. HRV and ERV 1 Responses

How do you lower high radon levels in a basement?

...to read that may help – How to remove radon gas from basements and crawl spaces There are some specific radon gas mitigation techniques for existing homes t...

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

What is the best septic system if we plan on using the hydraloop

...toilet flushing, laundry machine and topping up pool). The website and documentation claims to reduce water output by 85%. Thank you for whatever infor you ca...

Posted by Genevieve Brunet Sept. 9, 2020, 9:16 p.m. Greywater Recycling 2 Responses

Where do you install a weeping tile with a high water table?

...to build a basement where the entire slab is poured first, then ICF walls are formed on top. This will actually lead to a far superior slab in terms of energy p...

Posted by Alex Kesheshian June 11, 2020, 11:54 p.m. Foundations and Basements 1 Responses

Do you have recommendations for radon sealing basement concrete & installing new flooring?

...to check out that seem to address a lot of your issues that would be a good place to start: Radon gas barriers for below slab floors How much insulation doe...

Posted by M N Sept. 1, 2020, 2:20 p.m. Basements improvements 1 Responses

What is the right amount of insulation for a house?

...to the added up front building cost. I'd like to aim for the better built house with instant payback but how do I determine how much insualtion to use? EPS unde...

Posted by Ryan Gerbrandt Feb. 11, 2019, 9:57 a.m. Passive solar home design 4 Responses

Can you use Foam boards on basement walls to stop condensation?

...to check. This particular wall is not buried fully like the rest (due to slope of property) and it is exposed to the outside temps top to bottom from the outsid...

Posted by Chad Johnson Dec. 21, 2019, 7:59 p.m. Basements improvements 3 Responses