- What is the difference between a concrete or paving paint paint and a concrete sealer?
Concrete or paving paints, as they are known, is a coating that adheres to the top of the concrete, forming a barrier to protect the concrete. They are typically thicker than a sealer which largely penetrates into the concrete and has minimal film build on top of the concrete.
- What are the benefits of applying a coating to concrete?
The application of a sealer or paving paint delivers significant aesthetic benefits by transforming the appearance of the concrete and the surrounding landscape. Additionally, sealers and paving paints have functional benefits such as sealing the concrete dust from raising. Without sealing, every time you sweep the surface, dust will be present. A coating will also prevent stains from penetrating into the concrete, preventing patchiness and enabling retention of a consistent appearance.
- Will concrete paints make the surface slippery?
In environments that are prone to become wet, the surface can become slippery. In these instances, non-slip additives are recommended. It is recommended to select a non-slip additive with non-slip certification, as these have been tested to ensure effectiveness. The texture of the concrete or surface profile also influences the level of grip on the surface.
- My concrete was poured last week; how soon can I apply a coating?
It is recommended to leave freshly poured concrete for a minimum of 28 days. In environments where the concrete is thicker than 100mm, it is recommended to leave the concrete an additional 7 days for every 25mm the concrete is thicker than 100mm.
- Do I need to acid etch unpainted concrete?
All unpainted concrete should be acid etched or ground before coating, to achieve best results and ensure optimum performance. Acid etching can sometimes be omitted on surfaces that have a texture equivalent to 120 grit sandpaper. However, a surface porosity test should be conducted to ensure there is adequate penetration. Simply sprinkle clean water onto the concrete; if the water penetrates into the surface, the concrete is suitable to coat. If the water pools or beads, then acid etching is required.
- How can I check to ensure the concrete is clean enough to paint?
Apply adhesive tape onto the concrete and press down. Peel the tape from the surface and inspect the underside. If the tape contains particles, further sweeping or vacumming of the surface is required until the tape is clean after conducting the check.
- How do I know whether the concrete is dry enough to coat?
Haymes recommend conducting a surface moisture check. This can be completed by placing a 300mm x 300mm piece of clear plastic on multiple areas to be coated. Tape down the edges with masking tape to seal and leave on the surface for at least one hour in direct sunlight. If any condensation under the plastic is visible or the concrete has darkened, the surface requires further time to dry. Repeat the process until no moisture is visible. Alternatively, a moisture metre instrument can be used. A moisture reading of less than 5% is required.
- How long do I need to keep off the concrete after painting?
Light foot traffic can return to the surface within twenty four hours, in some cases after 2 hours. Vehicle traffic must remain off the surface for a minimum of 7 days from completion of the final coat. Please consult the product data sheet for specific dry times and advice.
- Do I need to thin the first coat?
Always consult the relevant product data sheet, which will provide specific advice. Instructions vary between the products, but always closely follow the datasheet instructions to ensure performance is not compromised.
- How long do concrete paints and sealers last?
The coating life is dependent upon the environment and application. Regular cleaning of the surface to remove dirt, dust and contaminants assists prevent coating degradation to achieve a longer coating life. Importantly prompt removal of stains such as oil and grease will assist prevent permanent staining to ensure your coating remains in top condition.
