When getting ready to purchase a concrete sealer there are many factors to consider. Application, longevity, quality, strength, durability and last but not least price. Concrete sealers are sold at a variety of price points but there are a few factors to consider before buying the cheapest priced sealer out there.
Active ingredients are important: is the sealer latex based or acrylic based? If so these sealers are usually cheaper but are not always the best products to use on concrete. Is the sealer a silane/siloxane? If so it is probably more expensive but will be the most effective on concrete blocks and cinderblocks. Silicates tend to be similarly manufactured in either sodium, lithium and potassium form. When it comes to choosing a silicate densifier look for one that will give you the most bang for your buck.
You also have to be aware if the sealer is concentrated or not. You may think you are not paying a lot for a sealer but in fact, it could be heavily diluted with water. We prefer concentrated sealers. Not only are you getting the sealer in its natural manufactured state, but you are not paying to ship water.
Our Take: Concentrated sealer brands we like are Supreme Crete and Ghostshield.
