Concrete Roofing

Concrete Roofing is prone to cracking, crazing, scaling or spalling. Ponding water could present a series of complicated and expensive problems.

Common Issues

Cracking - Shrinkage cracks occur when there is too much water in the mix. Compaction cracks are caused by substrate settling below the slab. Stress cracks occur when the slab is subjected to extreme loads.	Crazing - Also referred to as alligatoring, it is usually non-structural as it does not penetrate more than a few millimeters below the surface.	Roof Ponding - Ponding areas, often referred to as birdbaths, should be repaired immediately. Large ponds are usually caused by structural deflection.	Spalling - Breaking away of concrete at joints or steel reinforcing, and may be structurally significant. If may be caused by moisture attack on the rebars.

Concrete Roof Repair and Maintenance

The permeability of concrete leads to the passage of water and the retention of moisture within the slab. The majority of all construction claims are moisture related.

Annual concrete roof maintenance involves inspecting for cracking, spalling and other visible problems.

Leaks in concrete roofs are difficult to isolate and a seamless roof coating system may be your best option.

Concrete Roof Restoration and Coating

Stop leaks and add years to your concrete roof with our concrete roof restoration system.

	Water Based System Our EnergyGuard® Acrylic Elastomeric Concrete Coating is a good choice if your concrete roof is properly sloped and does not pond water. Use PrimeLock® Acrylic Primer to improve adhesion before topcoating.
	Solvent Based System Our EnergyGuard® Aromatic Polyurethane Coating is excellent for concrete roofs with minor ponding that cannot be rectified. Larger ponds should be repaired. EnergyGuard® Butyl Elastomeric Coating may also be used. A moisture survey is needed to ensure that the slab is totally dry.

What is Concrete?

Concrete is a mix of cement, fine aggregate such as sand, coarse aggragate such as gravel, water, admixtures and air.

Solar Reflectivity of Concrete

Concrete roofs absorb solar heat and slowly release it at night. This stored heat can severely degrade the performance of airconditioning equipment.

Elastomeric coatings reflect the heat and is a very popular option for building owners. Leaks in concrete roofs are difficult to isolate and a seamless roof coating system stops leaks. White roof coatings can reflect up to 90% of the heat from the sun.