Plan the perfect garden with our interactive tool →

Can I Paint Over Thompson's WaterSeal on Concrete?

You can paint concrete that's been treated with Thompson’s WaterSeal if you follow the proper steps. You should not paint over Thompson’s WaterSeal Advanced Clear, however. Proper preparation of the concrete and adequate drying times are required before you can start painting.

Applying Thompson’s WaterSeal

Apply Thompson’s WaterSeal to concrete that has cured at least 30 days. Apply the sealant only if the temperature is above 40 degrees and the surface can be protected from moisture, such as rain, for at least 24 hours. Allow the first coat to dry at least 48 hours and test to determine if a second coat is needed. Sprinkle a few drops of water on the concrete. If beads of water form on the concrete it is sealed. If the water is absorbed, producing a dark spot on the concrete, a second coat is required.

When to Paint

Apply oil-based paints to concrete treated with Thompson’s WaterSeal at least one week after the application of the sealant. Apply latex paints 45 days after the Thompson’s WaterSeal application. Follow label instructions from the paint manufacturer concerning application processes, temperatures and cleanup.

  • Apply Thompson’s WaterSeal to concrete that has cured at least 30 days.
  • Apply oil-based paints to concrete treated with Thompson’s WaterSeal at least one week after the application of the sealant.

Monitoring the Product

Check the waterproof status of the painted surfaces about once a year. Place a few drops of water on the surface and monitor it for absorption. Beads of water on the surface indicate the concrete is still waterproofed.

Safety Procedures

Apply Thompson’s WaterSeal in a well-ventilated area and avoid breathing concentrated vapors or mist from sprayers. Wear proper eye protection and rubber gloves while applying the product. Use a paint thinner or mineral spirits for equipment cleanup. Rinse all equipment with clear running water after the initial cleaning.

  • Check the waterproof status of the painted surfaces about once a year.
  • Wear proper eye protection and rubber gloves while applying the product.

Related Articles

How to Color an Existing Concrete Slab
How to Color an Existing Concrete Slab
What Is the Ideal Temperature for Staining Concrete?
What Is the Ideal Temperature for Staining Concrete?
How to Use Ironite As a Stain
How to Use Ironite As a Stain
How to Clean Concrete Walls
How to Clean Concrete Walls
How to Remove Salt on Paver Bricks
How to Remove Salt on Paver Bricks
How to Clean Concrete Floors Before Painting
How to Clean Concrete Floors Before Painting
How to Remove Graffiti From Concrete
How to Remove Graffiti From Concrete
How to Refurbish a Gunite Pool
How to Refurbish a Gunite Pool
How to Care for Pebble Tec Pools
How to Care for Pebble Tec Pools
Brush Vs. Spray Asphalt Sealer
Brush Vs. Spray Asphalt Sealer
How to Use Roundup Safely
How to Use Roundup Safely
How to Repair Acid Stained Concrete
How to Repair Acid Stained Concrete
How to Clean Pet Stains on Concrete
How to Clean Pet Stains on Concrete
How to Repair the Joints on Concrete Front Steps
How to Repair the Joints on Concrete Front Steps
How to Reduce Pool Water Hardness & Alkalinity
How to Reduce Pool Water Hardness & Alkalinity
Garden Guides
×