Basement flooding is an issue for many homeowners. Doing an inspection of your basement along with the outside of your home will help pinpoint problems that will help in waterproofing your basement.
In evaluating the exterior of your house, keep gutters and downspouts clear.
Regularly check the drain pipes and remove debris, allowing free flow in your heating and air conditioning system and replace filters as needed.
Insulating your pipes will reduce condensation that can cause mold and corrosion.
Be sure to look over all ventilation systems, including exhaust fans, dryer vents and water heater and repair any malfunctions.
Sump pumps keep unwanted water out of your home. Check that the outlet pipe is not clogged or frozen and that it directs water away from your house. Test the pump by filling the sump pit with water to make sure the pump is working properly. Clean the air hole in the discharge line and verify the motor is running well.
Condensation on basement walls can be misconstrued for seepage because of hydrostatic pressure. In order to tell the difference between the two, tape a twelve-inch piece of aluminum foil to the wall that is inclined to moisture, sealing all sides tightly.
Check the foil in a couple of days to see if the side that was against the wall is wet. If this is so, then the problem you are looking at is seepage. If it is the outside that is wet, then it is condensation., which a dehumidifier can help solve.
Keep in mind that not all water-repellent and waterproofing coatings are the same even if the company advertises as such. Water-repellant means it is to be used for the exterior in above-ground concrete or masonry. Since it only briefly repels water it is not meant to block the passage of wetness under hydrostatic pressure. Some repellants fill surface pores to avert moisture movement and others are film-forming.
Waterproofing coatings stops the access of water to the basement under hydrostatic pressure. These film-forming coatings are actually suited for above and below as well as for interior and exterior usage. Even the finest waterproofing coating might not put an end to dampness if the block walls are not in good condition. Sweep the area clean, remove dirt and grime and then do a final wipe down of the area. Use a wire-brush to remove old paint and use a quick-dry cement to patch cracks. When doing this don’t forget to include the joints where the wall and floor meet.
Follow instructions carefully making sure to use the spread rate that is required. Work the coating into the pores during the application. In some cases a second coating may be required.