Franklin Stone Installation
A full size sample panel complete with complementary mortar should be installed at the jobsite prior to installation of any Franklin Stone product. This panel will represent the quality, color and texture of the product and the workmanship to be expected for the project. Either the owner or the project architect must approve the panel. Cordova Stone will provide 4″ units for a sample panel 4′ x 4′ at no cost for the material (not including freight to the site).
The facing is not intended for use as an impervious surface. Muratic acid should not be used as a cleaning agent or indirect contact with the facing. The facing should not be continuously exposed to temperatures above 250° F.
Cavity wall construction is recommended for exterior walls,with proper flashing, venting and weep holes. A complementary or matching mortar color is recommended when using Franklin Stone units.Control joint spacing should be approximately 20′ maximum. Continuous horizontal joint reinforcement is recommended every 16″ or every course when installing 12″ and 16″ high units.
Keep walls clean by bagging or brushing during installation. This significantly simplifies cleaning. Avoid harsh cleaning methods after the walls have been erected as this may mar the surface of the units.
Jobsite storage and handling:
Franklin Stone units shall be delivered to the jobsite on banded wood pallets with protective material. Each edge of a cube shall be protected by a pre-molded edge protector. Each cube shall be covered with a clear plastic wrap. Keep protective covers on the units until installation. Pallets shall be stored in single stacks on level ground and covered with a waterproof covering (e.g., tarpaulins) to protect the units from inclement weather. Units must be handled carefully to avoid breakage and damage to the finished surfaces.
Protection of Work: Cover walls, including open tops, each day after installation to keep open walls dry and protected. After units are installed, they should be protected from damage by other trades performing operations that can stain or otherwise damage the finished surfaces by covering walls with plastic. Corners should be protected from damage after installation by covering them with plywood. Do not, under any circumstance, install a damaged unit. If units have been damaged during transit, contact Northfield immediately.
Laying Masonry Walls:
Lay masonry units using best concrete masonry practices. Install only quality units; reject all defective units. Proper care shall be taken in handling to prevent marring or damaging faces, edges and corners. Lighting: Provide adequate lighting for masonry work by placing all lighting at a reasonable distance from the wall for evenillumination. Do not use trough lighting.
Draw units from more than one pallet at a time during installation. All exterior mortar shall include W.R. Grace DRYBLOCK
water-repellent additive added to each batch in the appropriate dosage rates for mortar type N per the manufacturer’s instructions. Refer to NCMA TEK-3-1C for Hot and Cold weather construction practices.
Lay Franklin Stone units with the faces level, plumb and true to a line strung horizontally. Units shall have uniform joints both horizontally and vertically on the finished side of the wall. Align carefully tooled joints on the finished side of the wall.
Cutting: Make all unit cuts, including those for bonding, holes, boxes, etc., with motor-driven masonry saws, using either an abrasive or diamond blade. Cut neatly and locate for best appearance.
Tool joints neatly after they are finger-hard to make them straight and uniform. Size and place cut pieces appropriately to maintain consistency and bond. Complete masonry construction using procedures and workmanship consistent with the best masonry practices.