Concrete / Discussions

How do you choose between a basement or slab on grade?

...concrete slab floors. So, you could pour the slab then seat an ICF Foundation wall on it, leaving you with a basement thoroughly insulated with no thermal bridg...

Posted by A. Delmas May 21, 2020, 8:59 p.m. Foundation choices 1 Responses

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

...concrete, so if you insulate it, it will then freeze (which is likely has not done before) so it can be at risk of cracking. I get why you are reticent to eat t...

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

Can you insulate an existing slab on grade floor?

...concrete but suspect the payback to do such an arduous, drastic task, would not be practical either in payback or life interruption. Thanks for your replies Mik...

Posted by Patrick Berkeley Dec. 31, 2020, 10:14 p.m. Foundation and basement improvements 5 Responses

How do you fix high humidity levels in a basement?

...concrete floor, so even if you did insulate and seal the walls with a spray foam vapor barrier , it will likely continue to absorb moisture from the ground belo...

Posted by JR Tadinac Aug. 21, 2019, 11:26 a.m. Healthy indoor air quality 3 Responses

How do I get rid of moisture with cement floor crawl space that has a vapour barrier?

...concrete floor? I’m just not sure of the positioning given that you mention joists as well, unless you’re just reporting on the general condition of the space. ...

Posted by Cindy Chatham 04 chatham Aug. 25, 2020, 4:47 p.m. Crawl spaces 1 Responses

What's the best way to seal a crawl space and insulate?

...concrete, and you may then be exposing the wall to different conditions than it is used to. If the walls are in good shape – as in straight and not cracked, it ...

Posted by Steven Johnston Feb. 23, 2021, 12:35 p.m. Crawl spaces 1 Responses

Can you elevate a slab on grade foundation?

...concrete . And if you have not yet chosen a wall assembly, here is a story about that same house, which is a ‘nearly Passive House’ in Perth, Ontario. They us...

Posted by Raoul Lions July 27, 2019, 2:47 p.m. Slab on Grade 3 Responses

What are the options for radiant heat with a slab on grade?

...concrete, no need for additional products. We have lots of pages on Radiant Floor Heating, have a look here and you will probably find all you need - Choosing...

Posted by August Wehrmann Feb. 3, 2019, 6:52 p.m. Delivery: radiant, forced-air and decentralized 1 Responses

How do you fix moisture problems in basement?

...concrete blocks and sit it up on small 1 inch high foam blocks (one cheap sheet of EPS from a local building supply store would be all you likely need) so the s...

Posted by John rodrigues Nov. 27, 2020, 8:50 a.m. Basements improvements 3 Responses

What is your opinion about building a garage on posts (screw piles)?

...concrete foundation, so there is also long-term value to consider. Whatever building type you decide on, be sure to have it designed by an engineer.

Posted by Les P Dec. 11, 2017, 2:21 p.m. Foundations and Basements 1 Responses

Can you help me choose between a slab on grade and pressure treated wood foundation?

...concrete, so I'm not sure where you're being advised to mix a PWF and a slab on grade, or how to even do that. A slab on grade floor consists of concrete and in...

Posted by Margot Simonot May 20, 2019, midnight Slab on Grade 1 Responses

How would I rectifiy problem of foundation wall cracks with finished basement?

...concrete as it is only held together by the mortar between the blocks. So insulating it from the inside means you are changing the thermal conditions is has bee...

Posted by Terry P July 22, 2020, 7:07 p.m. Basements improvements 3 Responses

My basement is smelly and humid, what can I do about that?

...concrete, and that that can damage the foundation. Like the person here, I live in a very cold climate. Hi Sarah, concrete is porous and will continue to wick m...

Posted by Jeff O. Feb. 8, 2017, 10:22 a.m. Foundation and basement improvements 3 Responses

How do you improve an old block foundation with no insulation or exterior moisture barrier?

...concrete. Concrete is wet, so are unprotected cinderblock walls, and the poly prevents the wall from drying. As for puddling, that sounds like an awful lot of...

Posted by Wilhelmina Lange March 11, 2021, 4:19 p.m. 2 Responses

Is solar air heating for a floor as efficient as solar hydronic?

...concrete floor will not be any more or less efficient that a boiler heating a water coil that blows air through a floor. The fuel source (gas, electricity, pr...

Posted by Ryan Johnson Dec. 7, 2020, 9:02 a.m. Delivery: radiant, forced-air and decentralized 2 Responses

What is the best insulation Under 2" Cement flat Roof in NYC?

Hi there For NYC What is the best insulation Under 2" Cement slab Roof for energy efficiency and water leaks? Maybe 2 layers? The base for the roof will be M...

Posted by Rafael Mor March 29, 2019, 5:19 a.m. Roof assemblies - new construction 1 Responses

Can you use spray foam Insulation under a slab?

...concrete may in turn vary as well, so you may need a little more, or it may be too thin in some areas. The only reason I could even think of to use spray foam...

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

What's the difference between a slab on grade and a monolithic foundation?

...concrete on grade (ground level), as opposed to ‘below grade’ like a basement. And a slab on grade can be built in a variety of ways ( monolithic or not), you c...

Posted by Ronaldo Johnitas Dec. 10, 2019, 6:12 a.m. Slab on Grade 4 Responses