Masonry Magazine August 2011 Page. 29
Stone application, setting stones in mortar
STEP 1: Completely cover the back of the stone with mortar, at least one-half inch thick, and press the stone firmly into the scratch coat to ensure a good bond. Press hard enough to squeeze out a little mortar around the edges of the stone. Assure you have complete coverage between the mortar bed and the surface of the stone.
STEP 2: Corner pieces should be installed first. Alternate the long and short legs of the corner pieces in opposite directions.
STEP 3: After the corner pieces are installed, apply flat pieces, starting at the outside working toward the center of the wall.
STEP 4: Cutting and trimming- use the edge of a trowel, nippers or a circular saw with an abrasive blade to cut and shape stones. If necessary, broken stones can be trimmed and shaped to fill in any gaps. For the most attractive finished appearance, coat with mortar any cut or broken edges. Also, try to place cut edges up when they are above eye level and down when they are below eye level.
STEP 5: Grouting joints - in applications where a mortar joint is used, fill in the joints with a mortar bag, taking care to avoid getting mortar on the stones' surface.
Diedrich's Manufactured Stone Cleaner
This is the product to use for cleaning manufactured stone, with special appeal for environmentally conscious architects and customers.
Manufactured Stone Cleaner is an organic proton with chelator for use in the final cleanup of new masonry construction (use within 3 to 7 days for best results). Formulated to meet state and federal specifications where muriatic/hydrochloric acids are not allowed, it efficiently cleans off residual mortar smears and day-to-day soiling that occurs on job sites. Also works well on sand faced brick, brick, stone, tile, exposed aggregate and several other types of new masonry construction. An extended dwell time permits a safer concentration to be used in comparison to the customary harsh, dangerous muriatic acid washes, and results in equal if not better cleaning with less harmful acid exposure.
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TECHNOLOGIES, INC.
1-800-283-3888
310 Wayto Road.
Schenectady, NY 12303
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READER SERVICE #315