Cultured Stone Over Grout Techniques

Installation Substrate

• Cultured Stone can be applied to several substrates, including plywood, concrete board, masonry, stucco and even metal. Installation techniques vary depending on the substrate so read the manufacturer's directions or consult with an experienced installer before you begin your project. In addition, a water-resistive barrier is required by building codes in most areas for all substrates except concrete and masonry. Check your local building codes before you begin your project.

Surface Preparation

• Thoroughly clean the substrate. Use a sandblaster to remove any old paint or sealant. Remove old grout as well as it may compromise the integrity of your Cultured Stone installation. A sandblaster should take care of any old grout. Once the substrate is sandblasted, hose it down to remove any dust.

Installation Tips

• Install your water-resistive barrier on a clean substrate. Then, secure a galvanized, diamond mesh lath to the substrate using galvanized nails. Galvanized nails and mesh are water-resistant and won't rust, increasing the longevity of your Cultured Stone surface. Apply a half to three-quarter inch layer of mortar to your Cultured Stone, then back butter the stones before you stick them to the wall. Back buttering means applying a thin layer of mortar to the back of the stone.

About Cultured Stone

• Cultured Stone is made of lightweight, flexible aggregate, making it less expensive and more practical than building with natural stone. The stone veneer is colored with iron oxide to achieve a natural look and feel. Cultured Stone comes in a range of styles, including limestone, fieldstone and river rock.