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Delta membrane after qualboc applied t prevent water leak into basement

How Much Does Basement Waterproofing Cost?

A dry basement will save you from many problems within your home such as mold growth and structural damage. Basement waterproofing is the only way to ensure your basement is protected. It also will remarkably increase the value of your home, but how much does basement waterproofing cost? Well, it is a bit of a tricky question to answer. Basement waterproofing can vary in price significantly depending on a number of factors.

Delta Membrane & Sump pump
The basement waterproofing method is one factor that will largely impact the cost of the job. Exterior and interior waterproofing are long-term solutions to a wet basement and the work is more extensive than using cheap methods such as sealants which are not long lasting, are not as effective and do not work in cases where there is a considerable amount of damage already sustained.

Exterior waterproofing tends to be the most expensive method. This is due to the extensive amount of work required. The area needs to be excavated down to the footings of the foundation. Then the old weeping tile is removed and hydraulic cement is used to fill in any cracks. A series of sealants are applied along with a mesh membrane and new weeping tile. Finally, it is filled in and topped with a layer of ¾ inch gravel. This process usually will cost around $100 per square foot, although it can go up to $300 per square foot.

Exterior basement Waterproofing
Interior waterproofing is cheaper than the exterior method. The interior floor around the perimeter of the basement needs to be dug out. Weeping tile is installed and connected to either a floor drain or a sump pump and a drainage membrane is also installed. Gravel is added over the weeping tile and then concrete poured over top to finish the floor. Interior waterproofing will cost anywhere between $65-200 per square foot.

Materials used is another determining cost factor. Cheaper materials can be used although they may not last as long or work as well as other more expensive options. How much damage is done will also determine what materials are required. It is well worth it to use the best available materials considering the amount of labour that goes into exterior waterproofing.

The level of excavation needed will also play a part in the cost of your waterproofing job. Most foundations are 5-8ft deep. The deeper the foundation the more expensive the work will be due to labour and an increase in the amount of materials needed to complete the work.
If additional flooding prevention devices are required this will also up the cost of basement waterproofing. Sometimes a sump pump or backwater valve will need to be installed. Sump pumps can cost between $560-3500, depending on the type of pump and if you need a sump pit dug out. Backwater valves can range from $1600-3700 depending on the depth and the placement.

In some cases, you may only require a crack repair. This generally costs between $1600-3200. This cost will depend on the placement, size and severity of the crack. If the crack is structural, it will need a more advanced repair which will end up costing you on the higher end of the range.
Window wells are also important to consider when waterproofing. They provide proper drainage and keep water away from the foundation. Repairing a window well or a new window well installation can be between $1700-3800. The size and depth of the window well also be a factor.

Although basement waterproofing may seem expensive, it is certainly a good investment for your property. A professional waterproofing job done by a reputable company will last you for many years and ensure your home is safe from leaks and flooding which can lead to tens of thousands in damages. By choosing to waterproof your basement you are protecting your investment and increasing your property value at the same time. Call WaterPro Master for a free inspection and estimate!

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