With so much litigation occurring in the construction trades it is vital for documentation of installations prior to, during, and post installation. Remember the old saying, "A picture is worth a thousand words." Well, that saying holds so true if you ever end up having to defend yourself.

Gypsum concrete is pumped into place over acceptable substrates. It is usually placed over structurally sound concrete or precast at a minimum depth of 1/2 inch or 3/4 inch. It may also be cast over structurally sound plywood.

As basic as it may appear, the installer's acceptance of a substrate for installing ceramic or stone tile continues to present problems for the trade and subsequently for the industry.

The number and frequency of wood flooring problems may seem high and costly. However, based on the fantastic acceptance of wood flooring in today's flooring market, the number of complaints may be explainable and not yet unusual.

There are a variety of thin-setting materials, thin-set mortar being only one.

Many still call concrete cement. Concrete is a selected mixture of Portland Cement, fine sand aggregate, coarse aggregate, water and various chemicals to allow for hot, frigid weather, workability, etc.

For something that appears as simple and explainable as concrete, there are many actions that occur during the placement and life of this important substance.

What's new in the area of moisture control?

From the Technical Expert

Poured gypsum underlayments have assumed a place alongside plywood, Portland cement concrete and oriented strand board (OSB) in the universe of underlayment products.