Different projects might require different types of specialty caulk. Using the right type can make the application go more smoothly and deliver a higher-quality result. Here’s a quick look at the main specialty caulk types.
Adhesive caulk fills gaps and joins pieces together. It prevents the formation of cracks from expansion and contraction.
Blacktop and Asphalt Caulk
Blacktop and asphalt caulk, as the name suggests, is used for filling in cracks in asphalt surfaces like parking lots and driveways. It creates a long-lasting, waterproof seal that keeps gas, oil, and de-icing salt stains at bay.
When you need to fill cracks in concrete driveways and sidewalks, pick up some concrete caulk. It can be exposed to water soon after application and is able to withstand extreme temperatures.
Because of its UV resistance, exterior caulk is used for outdoor trim work and new window installation.
Fire-retardant caulk is made to seal the separations around pipes, HVAC components, and wires, as well as for chimney, fireplace, and other framing gaps. Because it withstands high temperatures and is noncombustible, it can block fire.
Gutter and Flashing Caulk
Gutter and flashing caulk is intended for use around flashing, downspouts, gutters, roof vents, and other metal joints. Its durability and flexibility allow it to stand up to extreme temperatures.
Kitchen and Bath Caulk
Kitchen and bath caulk is mildew-resistant and important for installing countertops, tile, sinks, and faucets. It is also used to maintain tiles, tubs, and showers. You can expose it to water shortly after applying it.
Mortar caulk blends well with textured surfaces and is used to seal cracks and leaks on mortar, concrete, brick, and stucco. It is also made to withstand high temperatures.
Moulding and Trim Caulk
To install crown moulding and fill gaps between walls and boards, pick up some moulding and trim caulk. After it quickly dries, you can paint it as well.
Waterproof, flexible, and mildew-resistant, roof caulk is used to fix minor roof leaks.
Sanded caulk is used to fill joints 1/8” in size or bigger. It adheres well to wet surfaces and has a grainy appearance that matches with sanded grout and pre-existing tiles.
Window and Door Caulk (Interior)
Because it won’t shrink or crack, window and door caulk is used to caulk windows and maintain doors.
Due to a smooth finish, unsanded caulk is used to join counters and tiles. It can also fill very tight joints.