Concrete Floor Joint Sealer

Sealer needs to be applied in dry conditions because it won t adhere to damp concrete.

Concrete floor joint sealer. Shop menards for concrete sealers available from the best brands to protect your concrete from the elements. A slab will continue to shrink and widen the control joint for years although most of the shrinkage takes place within the first year and especially within the first 90 days. Installing the proper kind of concrete joint sealant will help protect the structure from moisture damage caused by rain wind gravity capillary force and surface tension. The pourthane joint sealant line is designed for sealing concrete and metal joints in a variety of applications including sidewalks balconies pavement terraces warehouses factories civil structures plazas and pitch pans.

Use a dehumidifier to remove moisture from the air. A backer rod in the joint also keeps the sealer plug thinner reducing the amount of sealant needed. Although the best theoretical shape of the sealant plug would be 1 2 depth to width ratio aci 504r 90 guide to sealing joints in concrete structures recommends that a better ratio is 3 2 since this allows the sealant to adhere better to. To seal concrete floors that have been exposed to moisture begin by inspecting the floor to determine how damp it is.

To do this apply a clear piece of plastic to the floor. Before applying check the weather. Using concrete joint sealant to seal concrete expansion joints and concrete contraction joints in concrete floors and concrete walls is an important part of maintaining the integrity of the concrete. What must be taken into account when sealing floor joints.

Behr premium wet look sealer is a clear non yellowing behr premium wet look sealer is a clear non yellowing high solids acrylic based masonry sealer. It is also an excellent topcoat for paints and stains. It is formulated to seal protect and beautify concrete and masonry surfaces with a high gloss finish. In other words when the concrete does shrink and crack the control joint is placed so that the slab will crack on a line instead of randomly across the slab.

We show step by step all application details that matter to get in the end the perfect joint. Click to add item rust oleum gloss clear concrete garage floor topcoat 1 gal to the compare list. The temperature also needs to stay above 50 f during application and drying time up to three days. The table below will give you an idea of the amount of concrete joint sealer you would need for a project.

If your concrete is new you ll need to let it cure wait at least one month before applying sealer. We re focusing on wall joints in this article however the same principle can be used for construction and expansions joints in concrete floors. If there is any condensation underneath it the floor is likely too damp to seal.