This article deals with walls below grade, foundation walls. For insulating above grade cinder block walls see How do you Insulate a Brick and Block construction as well as Insulating an Above Grade Block Wall from the Inside.
The best way to prevent water from leaking into the basement is not ...
Lokesh from Newmaket has a problem with his concrete driveway not being level. It actually flows water into the house. If you don't want to dig it all up and start over (which sometimes is the cheapest solution), you can actually raise the concrete slab to level it or even slope it away from the ...
Certain parts of Canada, particularly in the Winnipeg region, have a traditional construction technique that presents serious challenges when you want to insulate a basement -- the ends of the joists are actually embedded in the concrete foundation wall. Chris, from Winnipeg, asked for some f...
Randy in Winnipeg has found small cracks in a foundation wall and wants to know how to fix them.
Right up front I want to make the statement that it is often not worth the bother to fix a small crack in a foundation wall that is not moving -- especially if no water is coming in. The best way to...
The most effective technique, one that can save you hundreds of dollars of erroneous digging, is to use a "sonar probe".
This gadget is often combined with a video camera designed to look inside sewer pipes.
An emitter probe is snaked into the drain line. You walk...
"How can I paint my concrete floor when there's white powder on it?"
White powder is salt deposits called efflorescence that is there because high quantities of moisture are migrating through the floor. You need to solve the water problem first or no paint will stick. So find out why there is wa...
The national building code requires a minimum level of insulation in a basement that reaches about two feet below the outside grade level. The objective is to make this storage space a heatable space. Hence some materials and techniques have developed that satisfy this minimum code requirement th...
One of our viewers is about to insulate his basement and he has been told that he should not run the vapour barrier all the way to the floor. Fact or fiction?
You should run the vapour barrier wherever there is insulation to keep the moisture on the warm side of the wall. And in a basement insta...
It is always better to insulate on the outside of basements and crawl spaces, but usually more expensive and more trouble.
Brick or field stone foundations must not be insulated on the inside for much more than one foot below ground level. The poor quality of the mortar in these foundations dete...
Ron from Penticton, B.C. has a "stepped" foundation with a pony wall from the concrete to the ceiling above. This upper portion is insulated but not the concrete. He wants to insulate it all. He asks: "Does he have to remove the existing drywall, and does the vapour barrier need to extend over th...
