Concrete Joint Sealers: Types, Uses, & Properties

Concrete Joint Sealers: Types, Uses, & Properties

Sealers can be described as flexible, temporary materials that prevent fluids and other substances from passing through surfaces. They also block air leakage while protecting insects, dust, or sound, in addition to preventing heat loss. Several concrete sealers are available with different characteristics. Some are very durable but not always easy to cut. And there are weaker kinds like polyurethane, which allows substances through them until they are permanently sealed.

Laurel Asphalt, serving Johnstown, PA, will discuss some of the concrete sealers used in construction and their properties in this blog post.

Latex Sealers

Latex sealers are an excellent option for most interior applications because they provide easy cleanup, and they can be painted, too. Their water-based formula ensures that these products don’t crack or peel over time like other types of coatings, making them less expensive in comparison! However, this makes them vulnerable when exposed to high temperatures, leading to their shagging apart from exteriors.

Acrylic Sealer

Acrylic concrete sealers are among the most popular types of concrete sealers in commercial and residential applications due to their ease of application and durability. This type of water-based sealer is used for sealing both porous and nonporous concrete. It penetrates the substrate by filling microscopic pores and capillaries that exist within the surface to form a protective monolithic membrane that resists staining and damage caused by deicing chemicals, oil spills, and even acid rain.

Butyl Sealer

Butyl sealer is made from the butyl rubber compound. It has a wide range of applications, mainly involving sealing joints in structures like walls, floors, and roofs to prevent water penetration (liquid or vapor) behind them. The product can also be used for sealing windows, doors, plumbing fixtures, etc., where water penetration is not possible.

Butyl sealer has excellent resistance to ozone, sunlight, and heat. It can be applied in both thin or thick coatings, depending on the desired penetration. The product provides a long-lasting weatherproof seal when used outside.

Polysulfide Sealer

Polysulfide Sealer (also called Polysulfide binder or adhesive) is a two-component, room temperature curing, solvent-free elastomer. The sealer cures rapidly when exposed to moisture to create a flexible membrane with the consistency of rubber. It is a 100% solid system that will not shrink, crack, dust or chalk and has an overlapped joint design for easy installation.

Polysulfide Concrete Sealer is easy to install and can be used on interior or exterior (above grade) concrete flatwork, pavers, prefabricated structures, expansion joints, slabs with integrated contraction joints, curbs, steps, or anywhere that requires a durable rubberized membrane that seals out water.

Epoxy Sealer

Epoxy sealers are a two-step process that creates a high-build, protective film on the concrete surface. Most of them are made up of two components that must be combined before applying. They are typically used in high-traffic areas to protect the concrete, including garages, warehouses, basements, and commercial buildings.

Laurel Asphalt, serving Johnstown, PA, offers Asphalt Paving, Commercial Paving, Decorative Stamped Asphalt, Decorative Streetscape Crosswalks, and a whole lot more. Get a free estimate.