Advertised as being suitable for interior or exterior concrete surfaces, Endur-O-Seal’s Hydra Seal concrete sealer is a penetrating sealer option similar to Applied Technologies Hydra-Block sealer. The Hyrda Seal is a water-based sealant, making it environmentally safer than a solvent-based product. It is also safer for use indoors, as the fumes aren’t as hazardous and the risk of flammability is not as high. It also has a low VOC content, which makes it legal in states like California, New Jersey, and New York with strict environmental regulations on concrete sealers and other such products.

The product in particular is a sodium silicate sealer that will penetrate past the surface of the concrete to bond chemically within the concrete. The chemical reaction will help protect the concrete from water leakage and seepage, all while allowing a certain amount of moisture to pass through the concrete’s pores. Concrete needs to release moisture in a controlled way in order to remain as strong and as durable as possible.

With protection from the incursion of water, moisture in basements would hopefully not lead to mold and mildew build-up – however, Endur-O-Seal cannot guarantee this with their product. Despite this, it is a solid product, if a little on the expensive side, that will help you protect your concrete surfaces.