Get matched with top concrete resurfacing pros in Onalaska, WI

You'll find a slurry of natural and synthetic polymers, rubbers, epoxies, and resins used to bond old concrete to new concrete. The right bonding agent depends on the method of concrete pouring you choose and whether you're adhering concrete over concrete or concrete over sand and gravel. Some concrete resurfacing mixtures contain bonding chemicals as well.

Sealing resurfaced concrete is not an absolute necessity. However, it is recommended, and in most cases, a high-quality concrete sealer can protect the surface from stains as well as water penetration, extending the life of the resurfacing material. Some sealers are formulated to protect pigments from fading due to UV exposure. Sealer tends to enhance the colors in decorative resurfacing applications, making them more vibrant and richer compared to the duller, more faded appearance of concrete colors without sealer.

No, wet concrete will not bond to dry concrete without an additional bonding agent. The common alternative is adding a sand or gravel layer under a concrete slab to enhance bonding and create a stable foundation. The right choice depends on the height and thickness of your two slabs, local laws, and the use of the specific concrete slab.

Whether resurfacing concrete is worth the cost depends on the condition of the underlying slab. Resurfacing can be a good option if the concrete is in decent condition with only minor issues like standard wear and tear, small cracks, chips, or discoloration. In these cases, resurfacing adds a protective layer that can extend the concrete's lifespan without the high cost of a full replacement.

However, if the concrete has significant damage—such as deep cracks, peeling, sinking, or is broken up—resurfacing may not be worth it. The new overlay is only as good as the concrete beneath it, and existing problems like peeling and cracks are likely to show through the new surface. In situations with severe damage, replacing the entire slab is often more cost-effective in the long run and will yield a better result.

To make the best decision, it's recommended to have a licensed concrete specialist inspect the damage and determine if resurfacing is the right choice for your situation.