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Found 96 results for the search ‘Basement walls’

• Article

  Myths and misconceptions about concrete and water

  A comment from a reader: "I notice in your section on self leveling concrete that you mention about needing to let the water out before putting anything on top of the new compound. (Self Leveling Concrete) This is a common misconception about concrete, in fact the water does not leave, it become...
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  HOW CAN I STOP CONDENSATION ON THE BASEMENT WALL BEHIND INSULATION?

  First ensure that this is not a leak in the basement wall. Click here for details on Waterproofing a basement wall. Second ensure that the wall is well sealed, especially around electrical outlets and floor and wall joints. Click here for details on Air Sealing. Finally, make sure there is no a...
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  Venting a mouldy basement.

  Last year we shot a special Spring Clean-Up show and in that show we cleaned up some mould on the lower walls of one of our viewer's basement. Recently we went back to permanently solve that problem by installing an exhaust fan that would draw the cold moist air off of the basement floor, doing ...
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  HOW DO I INSULATE A SHALLOW BASEMENT?

  A basement that has more than 50 per cent of its height sticking out of the ground is not really a basement. The walls should be treated as ordinary, above-ground walls. The foundations should be treated as slab-on-grade to avoid frost problems. Interior/exterior insulation combinations can be u...
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  WHY ARE THE TEMPERATURES OF THE BASEMENT SO DIFFERENT FROM THE REST OF THE HOUSE?

  There are four special temperature considerations in the basement.The air temperature in the basement is not always the same as that in the rest of the house. In a house with exterior basement insulation, the massive foundation wall is warm and slows down temperature changes (hotter or colder...
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  Sound proofing a basement room

  One of our viewers asked about sound proofing a basement room. That is a big topic but here is some information.The QUALITY of sound in a room is the subject of ACOUSTICS, not sound proofing. Acoustical tiles and sponges on the walls do not do much to stop noise movement to or from the rest of ...
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  BASEMENT: WHAT R VALUE SHOULD I HAVE?

  For detailed R value recommendations, search keyword "R-Value" for the title "WHAT ARE THE RECOMMENDED INSULATION LEVELS?".Note that in the previous answer, some of the common options for basement insulation does not even meet the minimum recommendation of RSI - 2.1 (R-12). Manufactures of all...
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  Retaining Walls and Frost

  Hi Jon,  I have a driveway retaining wall that continues to be pushed by the ground, even though it is backed by gravel and drained to "nothing under the driveway" except crushed gravel. I realize proper drainage affects this somewhat, however would prefer not to cut open my driveway, sidewalk a...
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  BASEMENTS AND CRAWL SPACES

  I love the story that Harold Orr of the National Research Council tells about basements. Years ago, a farmer went into his field, dug a hole and prayed to God that it would fill up with water for his cows. He called it a watering hole. Then a housing developer bought the farm, dug a hole o...
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  WHAT FACTORS CAN MAKE BETTER BASEMENTS?

  The three fundamental cures for basement problems are: removing the water from the outside, using granular back fill or a drainage layer against the foundation wall and insulating on the outside of the basement. Any one could stop or prevent a problem, all three of them together is the bes...
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  WHAT FACTORS CAN MAKE BASEMENT PROBLEMS WORSE?

  Any of the following five factors can make matters worse:-- Thermally conductive soils: Dense soils that hold water fairly well, in contact with the basement wall are asking for trouble. Clay soils are even worse in that they allow migration upward of water through capillary action, the prim...
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  A trench to divert water inside the basement.

  Brian from Cornwall, Ontario just bought a house and when it rains heavily, it flows in the basement. Someone recommended that he dig a trench inside the basement to drain the water away.First of all, see if simply landscaping sloping away from the house, and rain gutters and downspouts away fro...
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  WHAT ARE THE PRESSURES THAT CAN DAMAGE MY BASEMENT WALL?

  A basement is subject to three strong pressures.Settling is caused by the weight of the house pushing down on the footings and further compacting the soil underneath. This causes no great problem if everything settles together. However, settling can cause foundation and upper wall cracks whe...
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  BASEMENT: BATTS OR RIDIG FOAM BOARDS?

  Fiberglass batts, mineral wool batts and all kinds of rigid foam boards are commonly used to insulate basements both inside and outside. One of the critical rules when insulating basements on the inside is that there must be no air space between the insulation and the wall. (see no air space beh...
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  Can I lower the floor of the basement?

  Tom from Thomasburg, Ontario writes: "I'm thinking about buying a house, however the basement has low ceilings. Is it possible to bust out the cement floor instead of jacking up the house?"Yes you can dig down, but you need to be aware of just how the soil under the house supports the house. Al...
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  CONFLICT: DOES FULL HEIGHT INSULATION OF A BASEMENT WALL CAUSE FROST HEAVING?

  Isolating parts of the house located underground from the heat of the house can cause freezing and shifting under certain conditions. Wing walls, carport posts, and the like are common frost heaving or ad-freezing candidates because these structural parts of the house are far away from the heat ...
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  BASEMENT: HEATED SPACE, WARMED SPACE, OR COLD SPACE?

  It is not a good idea to leave a basement completely cold, as this subjects the walls to freezing. A crawl space under the house can be left cold by insulating the floor above, but less insulation is required to simply insulate the perimeter of the crawl space (although you will have higher ...
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  What is that white stuff on my basement wall?

  Judy has a pretty messy basement wall and has had several expensive estimates for fixing it.It almost looks like a mould or a fungus growing out of it, starting at a definite line quite high up on the wall.When I looked through the window I could see that the white stuff was starting about a foot...
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  OVERVIEW: Frozen pipes: Tracing, thawing, preventing.

  As weather patterns change we are getting longer colder periods than traditionally in many areas of the country -- and with that, more and more complaints of water pipes freezing. Finding the frozen point can be difficult, thawing it can be problematic but if you have done those two, go one step ...
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  WHERE SHOULD I SEAL AND HOW?

  The smoke test described in the previous answer should be used to verify the presence of typical leaks and discover those peculiar to your own house. Before sealing, read the section on Ventilation to avoid any future condensation problems. The leaks high in the house are not necessarily the lar...