FLOOR PREPARATION (prep)– What is it?

FLOOR PREPARATION (prep)-- What is it? Is the preparation work minor, major, complete substrate resurfacing, flash patch application to substrate or is it just using a broom to sweep the floor? How is it determined, when is it determined and is it part of the original job work scope? Does floor prep include a moisture barrier/retarder application, self-leveling compound, moisture vapor emission testing, scraping, grinding, or bead blasting the substrate? Is removal of the existing floor … [Read more...]

With the Concrete Vapor Movement Comes the Alkali Salts

With the Concrete Vapor Movement Comes the Alkali Salts With water vapor moving upward into the slab comes the alkalinity degrading to adhesives causing the flooring material to lift from the concrete surface.  As the vapor moves through the slab capillaries, alkali attaches itself and is then deposited on the slab surface. The failures are two fold as we can see the bumps from the accumulation of the moisture telegraphing through vinyl sheeting and tiles, combined with the lack of bond to … [Read more...]

Acid Etched Concrete Designs, DYI Instructions, Ideas

One of the newest hot trends for flooring is acid etched concrete. The great appeal of acid etched concrete floors is the endless possibilities of gorgeous designs, durability and ability to withstand heavy traffic areas. A special type of acid, usually muriatic acid is applied to clean concrete surfaces or environmentally friendly products (recommended) that clean and etch such as Krudkutter,Eco-Etch Pro and others  are commercially available. Special stains are available in an array of … [Read more...]

Pre-Installation Moisture Testing

Pre-installation concrete moisture testing minimizes such issues: • Damage caused by excess moisture. • Discoloration of both floors and coatings giving an unacceptable appearance. • Delaminating of floor coverings and coatings. • Growth of microbes that can lead to poor indoor air, odors, and even some allergic reactions. • Deterioration of wall coatings and mold reactions inside the walls. • Corrosion of items embedded in the concrete or attached to the concrete. • Damage to items … [Read more...]

About Concrete and Moisture Testing

Moisture vapor emission rate (MVER) from concrete has an impact on the type of floor covering used on concrete slabs. A newly poured concrete slab may take as long as a year to fully dry. There are two common methods for testing the MVER in concrete, the calcium chloride test and relative humidity (RH) probes to measure the relative humidity from deeper in the concrete slab. According to the National Ready Mixed Concrete Association, the relative humidity tests with RH probes are a more accurate … [Read more...]