• CAULKING

• REPAIRING RANDOM CRACKS   

• REPLACING DISINTEGRATED EXPANSION JOINT

     Keeping the base as free of water as possible is key to extending the life of any concrete slab. Aside from improper preparation/installation or an inferior mix, the biggest reason for concrete failure is water and freezing water.

     The base or ground under the concrete must support the weight of not only the slab, but any vehicles or stationary objects on the concrete. A base that consistently sees water will not perform properly. With concrete having very little tensile strength, a weak base can lead to random cracking and uneven slabs. Erosion and settling can also present problems. When temperatures dip below freezing, a saturated base will freeze and expand causing the concrete to heave upwards, leaving a void. If the slab does not correct itself properly, the void will cause the concrete to crack and the slabs lay uneven.

     Water finds it's way into the base through rotting expansion joints, cracks, control joints and saw cuts. Gaps alongside buildings or foundations where they meet the concrete, not only allow water to seep into the base, but also presents moisture problems for your foundation and basement.

     Water consistently passing through cracks will eventually rust and disintegrate the wire mesh inside the concrete. As the wire can no longer do its job, the cracks are free to "open up" wider and allow the separate pieces to move independently.

     Caulking all cracks and openings in the concrete improves integrity, reduces the amount of water reaching the base, and significantly extends the life of your concrete. As a preventive measure, caulking control joints can be done before they crack.

     Preparation is important when caulking, all grease, oil, curing compounds, sealers and foreign matter must be removed prior to applying any material. Pro-Seal power washes all areas to be caulked with degreasing detergent. We also prepare the area with closed-cell backer rod or sand to achieve proper depth. Random cracks are ground approximately 1/2" below the surface to allow for sufficient caulk to be applied without leaving material above the surface.

     We use premium grade polyurethane sealants made specifically for outdoor concrete which, when properly applied and cured, forms a very flexible seal having extraordinary adhesion, elasticity and durability. Polyurethane sealants have a very long life due to exceptional resistance to weather, movement and traffic. For more information regarding the preparation of concrete, head to prepping.

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