Concrete waterproofing is the application of a suitable concrete waterproofing system on the concrete surface to create a breathable barrier so the concrete remains watertight. As we have explained in our other concrete posts, concrete is partially impermeable. Therefore, it absorbs any fluids or substances that may spill onto it. Leaving concrete susceptible to oil stains, leaks, cracking and other deterioration signs.
On What Surface Areas Is Concrete Waterproofing Applied?
Concrete waterproofing is applied to any concrete surface. Shopping centre parking bays, residential ground floor patios, warehouse interior floors, food stations etc. If you are looking to have your concrete floors waterproofed in your home, there are concrete sealers that bring out the beauty of the concrete by enhancing its appearance. This process also makes concrete a lot easier to clean.
A simple concrete waterproofing process is as follows:
- Remove all oil, stains, dirt, and dust from the concrete with a steel wire brush.
- Strip off any existing sealer (if any) from the floor surface.
- Roughen the concrete with an etching solution – Concrete coatings will not stick to a smooth concrete surface. Therefore, you need to ‘open’ the concrete by applying an etching solution. This will also decrease the alkalinity of the concrete.
- Apply a thin coat of concrete waterproofing using an industrial roller or sprayer.
- Wait for the first layer to dry before applying a second coat. The second coat needs to be applied in the OPPOSITE direction.
- Allow the concrete sealer to fully dry before exposing it to foot or vehicle traffic. If the area you want to waterproof is a high traffic zone, we offer after hours and weekend waterproofing services. Thus, reducing the amount of disruption for all parties involved.
What Happens If Moisture Gets Into Concrete?
Yikes! This is a scenario I hope you never have to experience. If there is moisture in concrete or there is a high percentage of humidity, concrete can take 60 – 90 days to dry. When concrete becomes wet, its strength decreases which of course affects it’s durability. On top of that, damp concrete becomes a breeding ground for mould which further decreases the concrete’s strength. Thus, resulting in severe aesthetic, functional and structural problems. Can you imagine walking or driving on concrete that has lost its strength rating?
Damp concrete cannot be waterproofed or sealed. The concrete needs to first dry completely before going ahead with any concrete sealer. You can dry concrete by increasing the air circulation.
Our Concrete Waterproofing Professionals
Concrete waterproofing is not a DIY process and should only be installed by a professional concrete waterproofing contractor. It is not as simple as clean, apply, dry. There are dozens of aspects to take into consideration prior to the application of the concrete sealer. Let our expert concrete team assist you! We offer free, no obligation inspections and quotations.