When it comes to garages and warehouses they require a tougher, durable, chemically resistant coating. Urethanes, especially aliphatic urethanes, are stronger, more chemically resistant, UV resistant and have a higher abrasion resistance. If you have an industrial warehouse and you decide that you need to seal it you have two options: a concrete densifier or a urethane coating. Concrete densifiers are excellent choices if you need to harden, dust-proof and increase the abrasion resistance of a warehouse. However if you need extra chemical resistance you need an aliphatic urethane coating.
Urethanes are easy to apply and can last up to ten years if you follow all of the proper precautions and instructions. The first step you need to take when applying an aliphatic urethane is to grind the existing concrete surface. By grinding the concrete you are creating a tougher surface for the products to adhere to so it will not scratch or peel after application. After grinding the concrete you need to mix Part A components to Part B components and apply using a squeegee. By using the squeegee you can elongate the coverage and it allows for the proper mil coverage. After squeegeeing you need to back roll the surface and then let the Urethane dry for 3-5 days to completely set.
Our Take: Urethane coatings that have held up the best for the longest time period are Urethane 645, Superior Industries Aliphatic Urethane , and APF’s Polyurethane 250 High Performance Concrete Sealer.