After the surface has been neutralized and has thoroughly dried, the acid stained project must be sealed with an appropriate concrete sealer.
Direct Colors offers both solvent and water-based sealers suitable for any concrete project. Sealers can be applied with either an applicator or a sprayer; however, some solvent-based sealers.
The method used to apply sealer depends on the type of surface and the variety of sealer used.
Our solvent-based sealers are appropriate for both indoor and outdoor applications; however, we recommend using a water-based sealer for occupied indoor applications and for basements.
If you are sealing a concrete wall, statuary or a similar project, a solvent-based, Satin Acrylic Sealer is by far the easiest sealer because it can be sprayed on.
Use caution when applying solvent-based sealers, particularly during indoor applications. Wear a mask and make certain the area is well ventilated to the outside. Extinguish all open flames in the area.
Generally, the thinner the application, the stronger and more durable the sealer will become.
Applying a thick coat will result in an inconsistent finish with tacky areas that may not cure properly.
Depending on the sealer selected, leave the solvent-based sealers to dry for at least 4-6 hours between coats.
The solvent-based satin finish acrylic sealer has the shortest drying time between coats and the water-based acrylic sealers the longest.
Water-based sealers should be given at a minimum 24 hours to set-up between coats.
The surface should be completely clear and dry before applying an additional coat.
If you live in a humid climate or the weather conditions are damp and overcast, give the surface additional time to dry.
Re-seal any exterior concrete surfaces or décor every 2-3 years if using an acrylic sealer.
Cold Temperature Warning
Water-based sealers must be applied to surfaces at temperatures greater than 60°F with an air temperature difference of 5 degrees or less. Central heating, radiant or convection heaters, or similar heating devices should be turned off during application. In-floor heating should be set at 60-65 degrees before application and turned off during the process.