How to seal concrete

 In Blog

A concrete floor sealer must be applied properly. Each step will have an impact on the final outcome. Below are some tips for applying a concrete penetrating sealer appropriately.

Here is a step-by-step summary of should you seal concrete floor square footage:

1. Of course you need to clean the surface: all oil, stains, grease, dirt and dust with paint brush from the concrete

Surface preparation before applying a sealer to existing concrete is very important. All oil, stains, dirt and dust must be removed or they may prevent the sealer from adhering properly on the surface.

2. Strip any existing sealer from the surface

If there is already a sealer on the floor, and you want to apply a sealer of a different brand, you must remove the old one, because the products may not be compatible.

3. Prepare the concrete with an etching solution

Some manufacturers recommend an etching solution to ensure the best adhesion results.

4. Apply a thin coat of sealer with a roller or a sprayer

You can apply sealers to concrete surfaces by roller or sprayer. You must think about saving while spreading the product in order to get enough sealer to cover all your floor. The typical coverage average is 250 to 300 square feet per gallon, depending on the texture of the concrete, some are more porous.

5. Wait for the first layer of sealer to dry

It’s better to apply two thin coats, because a thick layer can produce bubbles. The dry time between coats is also important. Wait to apply the second coat of sealer for the time recommended by the manufacturer, around two to four hours.

6. Apply a second coat, and after that, wait to allow the sealer completely dry.

It is important to apply the second coat of sealer in the opposite direction in order to ensure even coverage of the entire surface. Also, it is necessary to wait before it is entirely dry before walking or parking the car.

What’s a sealant and when should we apply it?

Concrete sealer products are chemical substances you can use to apply a layer of protection on concrete floors and other different structures. Sealing the concrete will help to avoid moisture damage and mainly, provide more durability and strength to the material. Concrete sealers also help bring out the aesthetic of your concrete floor and make it easier to clean.

When to seal concrete?

The best period to seal the concrete depends on some factors: if the sealer includes a curing product, you can apply it right after the finished concrete application. This kind of sealer will give a durable finish and instant protection.

If the sealer is a regular one, you will need the concrete to cure for 4 weeks, or 28 days, but this period can vary depending on the climate and mix of concrete. Don’t seal the concrete too soon and respect the waiting period recommended by the manufacturer. If you don’t wait long enough , trapping moisture might appear in the concrete surface, and will lead to premature failure of the sealer.

If you wait too long to apply the sealer, the concrete will have to be cleaned and degreased. Basically, you should wait at least one month but not much longer.

If you choose to use a special epoxy sealer or a polyurethane sealer for your garage floors and you are unsure whether it is the right one for you, contact B-Protek to discuss your project.

Can I seal concrete myself?

While many home owners attempt to seal their own concrete, it can be trickier than you think. To ensure it is done properly, contact B-Protek specialists. Also, if you know who originally worked on your concrete, they may offer a maintenance package that includes sealing it every few years.

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Representation of a building with a concrete floor polished by B-Protek