What is Joint Sealant and When to use it?

Joint sealant is a material used to seal joints and seams in various structures and surfaces to prevent the passage of air, water, dust, or other substances. It's essential in both construction and renovation projects to ensure durability, flexibility, and watertight integrity. Joint sealants are commonly used in tile installations to fill gaps between tiles, providing a smooth and resilient finish. They are also crucial for preventing moisture infiltration, which can lead to mold growth and structural damage. In addition, joint sealants accommodate the natural expansion and contraction of materials, ensuring long-lasting performance and stability.

Types of Joint Sealant

Waterproof Joint Sealant

Ideal for areas exposed to moisture, such as bathrooms and kitchens. It creates a durable barrier against water penetration, protecting underlying surfaces from damage.

Foam Board Sealant

Used for insulating foam boards, this sealant ensures airtight and watertight seals, enhancing the thermal efficiency of the installation.

Backer Board Sealant

Designed for use with backer boards in tile installations, it provides a secure and moisture-resistant seal, preventing water from seeping behind tiles.

Polymer Sealant

Versatile and flexible, polymer sealants are suitable for various applications, offering excellent adhesion and durability on multiple surfaces.


Known for its strong bonding properties and chemical resistance, epoxy sealant is ideal for areas requiring robust and long-lasting seals, such as industrial settings.


Easy to apply and clean up, latex sealants are perfect for indoor applications. They offer good flexibility and are paintable, making them ideal for aesthetic finishes.


Highly durable and flexible, polyurethane sealants are great for exterior applications, providing excellent resistance to weathering and UV radiation.


Acrylic sealants are versatile and paintable, suitable for both indoor and outdoor use. They offer good adhesion and flexibility, making them ideal for various sealing tasks.

Why Shop Tile This?

At Tile This LLC, we provide top-quality joint sealants tailored to meet your specific needs. Our extensive selection includes options for various applications, ensuring you find the perfect product for your project. With expert advice and reliable products, we are your go-to source for all your tile installation needs. Choose Tile This for exceptional service, competitive prices, and a commitment to helping you achieve professional results.