When should you use which concrete sealant?
Not all sealants are suitable for all projects. Since Loctite never lets you down, it has a range of products that will make your project a success, whether you use them as concrete joint caulk or sealants for concrete.
Foundation, walls, and masonry. If you need to repair concrete, brick, stone, or masonry, you will need a product that forms permanent waterproof and weatherproof seals for all kinds of exterior gaps and joints and that can withstand harsh environments. That means Loctite PL Concrete Non-Sag Polyurethane Sealant is the right choice: it is suitable for repairing cracks in vertical and horizontal surfaces and bonds to concrete, brick, stucco, metal, wood, vinyl, fiberglass, and other substrates. This product generally does not require a primer for applications involving concrete. Make sure your concrete is fully cured before applying this sealant.
Driveways, sidewalks, floors, and decks. These surfaces are exposed to pedestrian and vehicular traffic, so your sealant will need to resist abrasion and tear. Additionally, if you are sealing contraction/expansion joints on these surfaces, you will need a sealant that forms flexible bonds that withstand joint movement without distortion or failure. Loctite PL Concrete Self-Leveling Polyurethane Sealant does all that and more: it is virtually unaffected by extreme temperature changes and can be painted to blend in with surroundings for a professional look. You can use it for old or new concrete. If you are applying it to fresh concrete, make sure it is fully cured before you start sealing.