Precast concrete is durable, versatile and can be made into various shapes, sizes, and colors. If you want to change the color or improve its appearance, you need to know how to paint precast concrete.
Follow these steps for the best results:
1. Clean the surface
Before painting, the surface of the precast concrete must be thoroughly cleaned. Use a pressure washer to remove any dirt, grime, or mildew that may have accumulated on the surface. Rinse thoroughly and let it dry completely. Interior walls can be cleaned with just soap and water.
2. Repair any cracks or holes
If the precast concrete has cracks or holes, fill them with a concrete repair product. Otherwise, the paint won’t cover these imperfections. Instead, it will magnify them.
Follow the manufacturer’s instructions for the concrete repair product you choose and let the repair product dry completely.
3. Sand the surface
You may choose to sand the surface of the precast concrete to ensure that it is smooth and even. This will help the paint adhere better and give you a smooth, even finish.
4. Choose the right paint
All paints are different, especially when it comes to precast concrete. That being said, you’ll want to look for a few specific features, such as moisture and sun/UV resistance, oil base, and grading for outdoor use (unless your wall is indoors; then use interior acrylic).
5. Apply a sealer and primer
Before painting, apply a concrete sealer and primer to the surface of the precast concrete. The sealer will lock the repairs in place, and the primer will help the paint adhere better and give you a more durable finish. The sealer should dry overnight before the primer is applied. Follow the manufacturer’s instructions for both.
6. Apply paint
After the primer has dried, get your chosen paint and start applying it using a roller or brush. Keep applying layer after layer until you receive your desired results. Let dry for 24 hours.
After the paint has dried completely, apply two coats of concrete paint sealer to protect the surface from moisture and stains. A concrete sealer will also help to preserve the color of the paint, keeping it looking vibrant for as long as possible.
By following these steps, you’ll be able to successfully paint precast concrete and achieve the desired appearance. Painting precast concrete is a simple and cost-effective way to improve its appearance and extend its life.
When investing in precast concrete that will be exposed to extreme weather conditions, it makes sense to choose high-quality materials for the best results. At Port Aggregates, all of our concrete products are made with the finest materials. It’s why we’ve been trusted for over 40 years! Contact us today to request a quote for your next precast project.