THINSETSometimes called Portland cement mortar, many companies manufacture this product. This product is used to bond dry tile directly to the backing or substrate. Basically, thin set is cement, sand, and an additional ingredient called methylcellulose. Methylcellulose is the ingredient that holds water in the thin set allowing the user to set dry tile. Thin set is available in two types, dry-set Portland cement mortar and latex-modified Portland cement mortar. Latex Portland cement mortar has latex modifiers mixed with the traditional ingredients. Each company may have several different types of thin set in their individual line. Some may have higher bonding properties, faster drying times, higher water resistance, and reduced shrinkage factors when applying the thin set in a thicker application. The user mixes potable water with the dry ingredients to form an adhesive. thin set is manufactured in white or gray in color. Generally, white is used for walls and counters and gray for floors.
Organic adhesive or mastic can be used on floors and walls. It is used like thin set to bond tile directly to a backing or substrate. However, special precautions must be followed in their use. These products are a pre-mixed adhesive that are commonly packaged in pails or other watertight containers. Following guidelines found under ANSI 136.1 2005, the mastics fall under two types.
Type 1 mastic: for floors and walls either wet or dry
Type 2 mastic: is generally used for dry wall use only
It is very important to closely follow the Manufacturers recommendations carefully to lead to a successful project.