concrete waterproofing

Guide to concrete waterproofing

Concrete is a very commonly used and popular building product. So much so that you’ll see it everywhere in your home. As a porous material, though, concrete needs to be waterproofed to protect it and the underlying structure from water damage. There are various processes for waterproofing concrete. Here, you’ll learn about those options. Need to know anything else about waterproofing concrete? Simply speak to your local waterproofing professional who is always happy to help.

Crystalline Concrete Waterproofing

One of the best options for permanent waterproofing of the material is to use materials within the concrete mixture itself. This method is called crystalline concrete waterproofing. This method will use a crystalline compound which causes a reaction with the water. It then will fill in all of the pours. The result is thousands of small crystals growing within the concrete itself. The crystals fill in any gaps, pores, or other areas within the material. Since the tiny gaps and pores inside the concrete are completely filled with crystals, water can’t penetrate through the concrete becomes completely waterproof.

Concrete Sealers

Another option, which is quite common, is with the use of a sealer. There are two options, a penetrating sealer or one that coats the concrete. A coating sealer creates a film on the top of the concrete so the film will stop water from getting through. Coating sealers are available as coloured or clear, but both are relatively easy to put on. A penetrating sealer is absorbed into the concrete. This creates a reaction. This locks out any fluid penetration. These penetrating sealers are a great option when changing the look of the concrete is not desirable. For example, if you have coloured concrete or applied another type of treatment to it, then penetrating sealers are the best choice. Note that both penetrating and coating sealers are not permanent solutions and require ongoing use.

Concrete Waterproofing Membranes

Concrete waterproofing membranes are a waterproofing agent applied in a liquid or through a sheet applied to the surface. Sheet membranes can be applied to the concrete with an adhesive. They offer a permanent and waterproof barrier if they are correctly applied (having the needed overlaps etc). Liquid membranes are applied with a spray gun, paintbrush, or roller and dry to form a rubbery membrane which will waterproof the material by covering it. This type of membrane is very effective, but repairs may be necessary if they get damaged or torn in some manner.

Cementitious Concrete Waterproofing

Cementitious concrete waterproofing is a very effective way of waterproofing concrete. Using a cement based compound, combined with bonding agents and water, plus additives, this mixture creates a slurry, which is then applied to the concrete. When the slurry then dries, it will completely waterproof the concrete.