Concrete Slab Foundation Moisture Problems

Each year such problems account for hundreds of millions of dollars in unanticipated expenses to correct problems and resolve disputes.

Concrete slab foundation moisture problems.

A low permeance vapor. Duct tape an 18 inch square piece of plastic onto the exposed concrete and leave it for 16 hours. High shrinkage leading to excessive random cracking and curling and uncontrolled vapor transmission. Condensed moisture accumulation under the plastic at 16 hours can indicate a problem.

Moisture related floor covering and coating problems have in recent years become among the most common and costly issues being faced by design professionals contractors manufacturers installers and building owners. It s commonly an interior problem because breathable products that reduce the threat are more commonly used in exterior applications. Moisture problems in concrete slabs old and new can play havoc with decorative concrete projects and other flooring strata in several ways including bubbling blistering and blushing of color. Fixing moisture problems in concrete slab sources of moisture in concrete.

The concrete slab can also absorb the groundwater below and around it. One of the simplest most economical test methods for determining whether there may be moisture in concrete is the astm d 4263 concrete moisture test. Moisture diffuses upwards through the top surface of the concrete slab as well as through floor surface treatments and leads to mold and other microbial contamination problems. It is from within the concrete itself which with an excess of water is required to.

If there is too much moisture in the concrete and an impermeable layer is placed over it the moisture migration can delaminate the coating sealer or overlay. We have it within our power to produce and place concrete in a way that will help solve the two most egregious problems associated with slabs on ground. Thus the amount of natural groundwater has a. But the biggest problem for decorative concrete with a lot of moisture moving through a slab is the pressure it exerts at the surface.

A concrete slab on ground is the heart of an industrial facility. These water sources increase in. Unnatural water sources can. Causes of moisture accumulation in concrete.

Sources of moisture in concrete rain snow and sprinkler systems are culprits on a work site open to the elements.