Concrete Sealing and Sandblasting

Concrete sealing and Sandblasting is a regular maintenance item for your household routine typically performed in the spring and summer months. Due to concrete being an absorbent material by nature and its microscopic holes, it acts like a sponge absorbing water. Most concrete has air entrainment for the northern Canadian environment because of the benefits. However, too much air or not enough will be harmful to your concrete. Without the protection of a concrete sealer, water can freeze inside the cavities and cause your concrete to pop, spall, pit, or even crack.

The Concrete Doctors know how to help prevent that from happening by properly Concrete Sealing and Sandblasting yearly. We recommend performing preventative measures like patching material to fill the cracks in your concrete, preventing water penetration. The concrete’s surface will dramatically increase your concrete driveways and walkways’ lifespan.


  1. image

    Cleaning and power washing your concrete

  2. Sealing your Concrete
  3. Filling your Concrete chips or cracks


Using the wrong psi pressure when power washing your concrete can leave abrasion and line marks. Our services include pressure washing the concrete with hand-held power washers and walk-behind surface cleaners. Many times we also use a biodegradable cleaner to lift and remove contaminants or a weak acid-based cleaner.


The Concrete Doctors offers two varieties of sealing.

The first is a deep-penetrating water-based concrete sealant, which is absorbed into the slab to protect the concrete and preserve its longevity. This concrete sealer provides a waterproof barrier. The typical application for this product is on broom finish sidewalks, patios, steps, and driveways. Due to the Canadian winter’s freeze-thaw cycles, it is suggested that the concrete is cleaned and sealed every 1 -2 years after this sealant is applied.

The second sealer is a Concrete Doctors product, which is a proprietary blend of chemicals. This product act as a densifier to the substrate, which chemically alters the concrete’s micro cracks and microscopic voids. This product the slab to the point where it cannot absorb water and helps prevent spalling and cracking issues in the future. This is a one and done solution and would not need to be reapplied in the future.


Cracks in concrete are expected; most companies will provide control joints or saw cuts to prevent unsightly cracking across a large spaning area when the concrete is first poured. The critical goal is to lessen the impact of the freeze/thaw process. Proper maintenance of patching or filling combined with sealing is a crucial step to maintain your concrete’s integrity.


Expert technicians with years of experience

No job is too large or too small

Environmentally-friendly solutions

Locally Owned and Operated


Sandblasting and dustless concrete blasting is one of the many methods used to texture the surface or remove old Concrete to prepare a base. The amount of sandblasting needed will vary from light cleaning to a deep penetration that exposes the rock aggregates. Concrete sandblasting is sometimes messy and dirty; however, the operation is not particularly complicated; specific procedures need to be followed to ensure the concrete surface is attractive. Depending on the project, the equipment needed for blasting may differ depending on the requirements.

An assessment is done onsite with a Concrete doctor technician to explain how the surface will be prepared. Should the concrete surface require a light blast or something more aggressive, our equipment can handle the job. We use both dry and wet blasting equipment with added air compressors. Most jobs will need 150-160psi, and we have the ability to deliver about 300 psi for each nozzle in action. We have various tips and nozzles so that the correct diameter is allow selected. When dealing with the high pressures of Concrete sandblasting, the hose lines will require adequate strength and reinforcement. Because the air is pushing abrasive material in the hose’s inside diameter, it is essential to have the right size and durability. The proper time to do the blasting depends on the location and needs of the customer. The exact distance of spray pattern for dustless and normal sandblasting depends on the pressure being used, the concrete matrix’s hardness, and the abrasive’s cutting ability. An experienced Concrete Doctors operator can quickly determine the nozzle position to produce the specified surface finish expected.