Some tips for thin stone veneer installation include the adoption of movement joints in the setup to allow for expansion or contraction of the stones or mortar and the use of waterproofing membranes. Proper surface preparation is another tip that ensures better adhesion, notes Custom Building Products.
Waterproofing the thin veneer installation eliminates the risk of water damage. Including a waterproofing membrane during the installation process provides an impenetrable barrier against moisture. Invest in industry-rated membranes that also act as an air barrier, as air infiltration can cause cracking of the veneer assembly, states ASTM International.
When preparing the surface, the key to adhered installations is making sure there is adequate preparation of the binding surface to provide a compact fit for the stone veneer. This involves eliminating contaminants on surface intended for installation and ascertaining its stability, says Custom Building Products. A stable surface minimizes future deflections of the veneer once installed.
It’s also advisable to use polymer-modified mortar that provides the needed strength and form, advises Custom Building Products. The latex additives in such mortar enhance its waterproofing quality, an aspect that conventional site mixes do not feature. Avoid installing long lengths of stone veneers that do not factor in movement joints. Properly placed movement joints need to be wide enough to prevent cracks or delamination, or loss of mechanical integrity of the installation, highlights Custom Building Products.