Prepare the surface over masonary construction.
No preparation is needed for applications over masonary construction.
Preparing the Surface over Wood Frame Construction
Apply a moisture barrier directly to the wood surface starting from the bottom and working your way up. Cover moisture barrier with a galvanized metal lath according to local building codes. Overlap metal lath min. 4" on vertical seams and 6" on horizontal seams. Wrap lath around corners min. 16".
Applying Scratch Coat
Apply masonry scratch coat over metal lath evenly approx 3/8 – 1/2" thick. Press mix into the holes of the metal lath keeping surface fairly flat and even. Use a soft brush to lightly rough up the surface.
Mortar Mix
3-4 litres of water to 1 bag of ClusterStone adhesive.
Applying the Stone
Install corners first and work from the bottom up. Apply a half-inch layer of mortar to the back of the stone. Press the stone against the wall using even pressure across entire stone while gently rocking the stone into place. When using a stackable pattern, take care to keep stones level. Mortar consistency may need adjusting depending on weather conditions. Cut stones to length as needed using a masonry blade or stone nippers.
Grouting & Striking Joints
Use 1 part masonry cement to 2 parts sand for the grout mix. Grouting can be done using a grout bag. Fill grout joint completely being careful not to miss any voids. After grout mortar becomes firm to touch, you can strike the joints with a striking tool or hard-wood stick. Lightly brush excess dust from stone.
Cleanup
Remove mortar residue from face of stone with water and soft brush the same day of installation.
Precautions
A water-based acrylic sealer is a good idea in high moisture areas.
|
