Concrete Slab Roof Leaking

Here in florida most building foundations are concrete slab.

Concrete slab roof leaking.

This cement layer is known as a screed and contrary to popular belief its purpose is not to waterproof the roof. A 10 to 15 cm thick slab of reinforced concrete with a thin 2 to 5 cm thick layer of cement on the top. You have a rock hard concrete floor and it seems impervious to water intrusion. Most concrete roofs follow a similar type of construction.

However concrete is porous. It must be under slope. The most common complaint with regard to both concrete tile and flat concrete roofing is water leaks. Do waterproof your roof.

Concrete also cracks and those cracks will be the first. When there are leaks in a flat concrete roof the fast fix is usually to apply some kind of sealant or waterproof cement at the site of the leak. Concrete cannot be the top layer of any roof. If you have a look t some of the houses in portmore you will see the steel protruding from the roofs.

Roof penetrations are found on many flat concrete slab roofs. Roof penetrations are ac units vents drains pipes steel protuding from the roof and other systems that come through the concrete roof.