Basements can be musty and damp and need to be waterproofed to keep toxins such as mold and mildew from developing. The cost to waterproof basement will vary depending upon the type of waterproofing that is completed.
Costs Associated To Waterproofing a Basement
To prevent basement water damage we need to take interior and exterior precautions and There are four types of interior waterproofing as well as waterproofing the exterior.
1. Cost For Concrete Waterproofing Coatings: Home improvement and hardware stores will carry concrete waterproofing coatings. These are cement-like coatings and when dry adheres permanently to concrete walls. A five gallon bucket of concrete waterproofing coating will cost $30 to $40 and covers about 100 square feet.
2. Cost For Silicate Based Concrete Sealers: These are also known as densifiers and work only on walls that have not been painted or sealed. They are considered to be penetrating sealers and cannot flake or peel off. Once dry, they can be painted over. These are also found in home improvement stores. A one gallon container will cost $30 to $40 and will cover about two hundred square feet.
3. Waterproofing Paint: Waterproofing paint that is in acrylic formula and is similar to basic wall paint. It is rolled, brushed or sprayed on in a thick layer. One gallon will cover seventy five square feet and costs about $35.
4. Plastic Sheets or Panels: These will work only with interior basement drainage systems. They do not keep water from coming in through the walls but it does keep items in the basement dry. Generally a contractor is required for installing the plastic panels and interior drainage system. The cost of the entire system is $3,000 to $5,000 for a basement room that is twenty foot by twenty foot.
5. Exterior Waterproofing Cost: This requires excavating around the structure to the full depth of the foundation and then installing a waterproof coating as well as a drainage system. This requires a contractor and will cost $15,000 to $30,000.