Preparing Your Concrete Basement Walls For Waterproofing

Posted on: 28 October 2016

If you have an extremely wet basement, then it is wise to remove the water from the space before mold and mildew start to form. Basement waterproofing involves work both indoors and outdoors, and you can complete some of the techniques yourself. Indoor techniques include placing waterproofing paint. There are several things you should do before adding the paint, like the following.

Dry The Walls

Most basement waterproofing paints work by creating an impenetrable and flexible seal that keeps water from moving into your basement. The seal is created with the use of rubber or elastomeric paints. These paints typically contain a high level of solid content that bonds to your concrete walls. Most paints are water-based varieties that dry fully within a day or more. However, drying times are increased and bonding issues occur if the concrete walls are damp when you add the paint. 

To make sure your paint sticks as well as it should, dry out your basement completely before applying your paint. Dry out the space by placing a powerful dehumidifier in the area. Also purchase a blower fan with an air release spout that can be pointed directly at your wet walls. If you are starting your project in the winter, then add a portable space heater to your basement. Start your painting job when the walls no longer feel cold or damp to the touch. 

Fill In Cracks

If you notice openings or cracks in your concrete walls where water is able to spill into your basement, then it is wise to seal these openings before you paint. Paint will not fill in large cracks, and the waterproofing job is likely to fail. Most smaller cracks can be filled in fairly easily. Measure the diameter of wall cracks to make sure they are only about one-eighth or one-sixteenth of an inch wide. 

The narrow cracks can be filled with polyurethane foam, like the type you would use to seal windows and crawl spaces. Spray the foam directly into clean and dry cracks and allow it to expand and dry for a full day. Once the foam has dried completely, use a utility knife to cut the excess away from the wall so the foam is flush with the concrete. 

Concrete patch materials made with vinyl or silicone materials can also be used to fill in openings in the walls. These materials offer better protection from future leaks, but the fillers are also more expensive and take longer to dry. 

For professional help with your basement waterproofing project, contact a company like John's Waterproofing.


Fixing Up Your Home

When I was a kid, I always loved helping my dad with projects around the house. It was a lot of work, but I learned how to do really important things like work with my hands, paint, glue wood together, and nail things together the right way. When I became an adult and purchased my first home, I knew that I wanted to make my place a palace, so I started working hard to fix things up. I spent a lot of time going through and making plans, choosing materials, and then completely renovating the house from the ground up. This blog is all about fixing up your first place.