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Basement Waterproofing


Damp basements are a problem in a number of households in America. As basements are situated underground, it is normal, that it is damper and colder than the rest of the house. However, when actual water starts seeping into your basement, things are far from normal.

There are several different possibilities for water to get into your basement – the surface water may seep in running down the walls, your pipes or sewage may leak or the water may be pushed in by hydro pressure (the ground under the house shrinks and expands in different temperatures, the expanding leaves no space for water, so the water starts pressuring the foundation of the house and eventually may find its way through the floor).

To avoid water seeping into your basement:

-         take a walk in your garden, see whether there are any low areas close to the house that may collect water which may eventually seep into your basement;

-         check whether paths and driveways slope to the house – this is also one of the main causes of water getting into the house;

-         consult an expert if your basement has not been made waterproof using quality materials or special drainage systems to see into the possibility of installing one when the problem of water seeping in has become serious.


User Comments:



Comment by: Susan Horsnall
2006-11-11 06:20
My basement is one of those rare ones where the water is seeping through the floor. The cement was poured directly on the dirt- varying in thickness from 1 to 4 inches. What is my best option? I have 2 sump pumps and weeping tile around the perimeter of the inside of the basement walls.

Comment by: Mike
2006-12-21 15:49
Just wandering if you could recommend a Good Mositure Lock to use on Block Walls. Also should the entire floor be done as well? I don't get mositure now but I just want to increase the likeliness of getting moisture in the future! Thanks Mike

Comment by: Micah
2006-12-21 20:56
Susan,

I have the same problem. Moved into a 70 year old house and the basement floor is poured directly on the dirt, and I don\'t have any sort of perimiter drain or sump. Trying to figure out what to do.

Seen some waterproofing systems that have a combination of sump, baseboard perimiter drain (would prefer to keep above ground because it\'s cheaper) and some internal membranes that channel any water that gets through the floor to the baseboard drain.

Have no idea if this works, though, and I can\'t seem to find an Internet site of a company that does it in Toronto, but seems like a plan. If the floor doesn;t get too wet (which mine doesn\'t) and any moisture can be shunted under the membrane to a drain to get rid of it, supposedly should be able to put a proper floor on top of the membrane and have the problem solved.

Found this site: http://www.newton-membranes.co.uk/ for a company in the UK which seems to have the kinds of products I want, but I can\'t find a company that offers their products in Canada.

Anyways, good luck.

Comment by: Madeline Marrero
2007-01-10 05:27
I had a contractor from Vulcan, Basement waterproofing company, come in and he recommended that I have a pressure relief system installed. He said that I don't have a major problem but since there is water leakage he suggested the pressure relief system installed. He's charging $3,400 for the job. Is that a good suggestion and does the price sound resonable?

Comment by: Maria Herrera
2007-01-16 20:50
I am also getting water seeping through the floor! Only happens if it's rained for 2 days. Should we try to fill in the cracks (not big at all) and then seal the floor? Can we then tile over the sealed floor? Should we wait to see if we get more water before tiling? What do you recommend to fill in cracks? Do you recomment DIY or should we hire someone?

Comment by: Todd Hotchkiss AIA
2007-02-20 00:54
In preparing for a talk about wet basements, I've learned that the best solution is to give up on the failed exterior drainage system of drain tile, gravel backfill and waterproofing. Over time a replaced exterior drainage system will just clog up again. This site has a lot of good information:
http://www.basementsystems.com
Painting over the problem can just provide food for paint-eating mold.
As far as water coming up through the floor, you'll probably have best results removing the affected concrete, excavating out a trench with drain tile that goes to a sump pump, then covering it up with concrete.
If your floor floods--- ever --- don't put any flooring down that you don't want to have to replace again.


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