Surface Prep on Exterior Tilt-up or Precast Concrete building.

When it comes to painting exterior precast concrete or tilt-up concrete warehouse or factory buildings, surface preparation is critical. If the surface is not properly prepared, the paint or coating may not adhere well and could peel or flake off. In this blog post, we will discuss what type of surface preparation is required and what type of paint or coating is best to use in the Chicago area. We at Paint Platoon USA do these types of jobs quite often.

Surface Preparation

The first step in painting precast or tilt-up concrete is to clean the surface thoroughly. This can be done using a pressure washer with an environmentally friendly detergent as TSP is not used much anymore. Any dirt, grime, or loose paint should be removed before proceeding.

After the surface has been cleaned, any cracks or holes should be filled with a high-quality concrete patching compound. This will ensure that the surface is smooth and even, which is essential for achieving a professional-looking finish.

Finally, a primer should be applied to any bare areas on the surface, unless you are using a primer/finish in one type of product. The type of primer used will depend on the type of paint or coating being applied. A high-quality acrylic primer is a good choice for most applications.

Paint or Coating

When it comes to selecting a paint or coating for precast or tilt-up concrete, there are a few factors to consider. First, the paint or coating should be able to withstand the harsh weather conditions in the Chicago area. This includes extreme temperatures, high humidity, and heavy precipitation.

Second, the paint or coating should be able to resist fading and chalking. This is important for maintaining the appearance of the building over time.

Finally, the paint or coating should be able to adhere well to the surface and provide good coverage. A high-quality acrylic paint or a cementitious acrylic type of water resistant coating is a good choice for most applications.


Painting exterior precast or tilt-up concrete buildings requires careful surface preparation and the use of high-quality paint or coating. By following the steps outlined in this blog post, painting contractors in the Chicago area can ensure that their projects are completed to a high standard and will last for many years to come.

Scott K
Paint Platoon USA