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Use a wiggle action to further set stone. How hard should I push to apply the stone to the wall?Īpply enough pressure so mortar begins to ooze out to the sides of the stone. To butter the stone, completely cover the back of the stone with ½” mortar.

APPLICATION OF THE STONE Wha t is "Buttering" the stone?.

If you don’t wrap the corners with lath, you will have cracks next spring! This is where the most stress will develop. When corners are wrapped it is important to nail into the corner stud from both sides. Overlap the lath 4” at all seams - wrap all corners 16” or attach to stud. Be sure to penetrate stud 1 inch, and nail every 6” vertically. What size nails do I use?Ĭoated roofing nails or screws will suffice. There should be NO bubbles or bounce in the lath. This will make the lath angle down against the wall forming little cups that will help in catching the mortar for the scratch coat. The lath should be applied horizontally Surface should be rough as you rub your hand upward. As a further note, when in doubt, install the metal lath and scratch coat. Note: However, for clean and unpainted concrete and masonry surfaces, stone veneer may be directly applied without use of metal lath/scratch coat. What surface do I need metal lath on?įor all exterior applications, install metal lath and scratch coat on the structurally sound rigid sheathing.

METAL LATH What size metal lath should I use?Ģ.5 pound galvanized, self-furred, metal lath is recommended.

The metal lath will prevent the weight of the stone from pulling the nails through the cement board. We recommend installing metal lath and scratch coat. How do I apply veneer to cement board or drywall? What can I put stone veneer on for an interior application?įor interior applications, stone veneer can be installed over cement board, drywall, and all of the above.

The metal lath/scratch coating may be applied over structurally sound wall surfaces of plywood, OSB, concrete board or gypsum sheathing, supported by wood or steel studs, and over concrete or masonry walls.

What can I put stone veneer on for an exterior application? The water-resistive barrier generally consists of two layers of properly applied Grade D paper, which is then covered with metal lath and a mortar scratch coating (cement plaster). For nearly all exterior applications, required installation includes a metal lath and scratch coat (also known as cement plaster coating) over a water-resistive barrier. Careful and proper installation is important for ensuring the long-lasting beauty of your Proline Stone Veneer.