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Why must I seal concrete floors?

All concrete floors must be sealed properly, regardless of whether they are in your office, domestic kitchen, living area or commercial space. Let’s look at concrete flooring sealers, what they are, how they work and why they are so important.

The three main types of sealers

The three main types of sealers are topical, penetrating and integral and each sealer does something different. Let’s explain.

  1. Topical sealers – surface coatings like polyurethane/epoxy: These are placed on the surface of your concrete floors and form an effective protective layer. They are ideal for both indoor and outdoor applications.
  2. Penetrating sealers – such as silane/siloxane coatings: These sealers penetrate the concrete itself to form a chemical barrier that helps shield your floors against moisture, helping them last longer.
  3. Integral sealers – like water repellent admixture that reduces permeability /increase resistance to moisture penetration: These sealers are added to the concrete mix before it leaves the plant so your concrete floor will start sealing immediately after it is laid. The integral sealer provides the same benefits as a topical sealer; however, the benefit is that it starts sealing immediately.

The importance of sealing concrete flooring

There are many benefits to sealing a concrete floor: 

Sealants protect floors and extend their life cycle

A good quality sealer can protect your concrete floors from the damage of oil spills, UV rays from the sun and changes in the weather. If you want your floors to last significantly longer, sealers are essential.

Sealed concrete floor

They help your floors to maintain colour. Colouring concrete floors are currently popular. However, when concrete flooring is exposed to the elements, it can easily become discoloured. By sealing your concrete floors, you can help protect and maintain your floors’ colour, keeping them looking clean and sharp for an extended period.

Adequate preparation is essential before sealing your concrete floor

Preparing your concrete flooring for sealing is almost a longer process than sealing the floor itself. However, if you want your floors properly sealed, effective and thorough preparation is extremely important. To prepare your concrete floor for sealing:

After completion of these steps, the floor can be sealed.

How to seal a concrete floor

Refer to the chosen product’s datasheet for application and other information on how to use the product.

To seal your concrete floor, pour a small amount of concrete sealer into a painting tray and apply the sealer evenly to your floors using a paint roller. Use a paint brush to seal around the edges of the room. Always work from the furthest area of the room toward the exit so that you don’t box yourself in.

Give the sealer proper time to dry, around 12 to 24 hours. The drying process can be sped up by using fans or dehumidifiers. Finally, nail the moulding and baseboards back into the base of the wall and return all the furnishings to the room.

How often do you need to seal concrete floors?

Refer to the chosen product’s datasheet for maintenance information for the product.

Sealing your concrete floor is not a time-consuming job and provides so many amazing benefits. The recommended period for sealing is every 2-5 years to ensure the floors remain in good shape for many years, protected against pitting, cracking and other damage.

Full acknowledgement and thanks go to for the information in this editorial.

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