Submit color samples for selection from manufacturer's earthtone color group or platinum color group. Submit certifications, test reports, full size sample(s) for each color specified.
Certifications: Concrete block for grinding shall conform to ASTM C90, TYPE 1. The provisions of ASTM C90 Paragraph 8.2.1 apply with regard to imperfections. The ground surfaces shall have a factory applied acrylic finish which assists in keeping units clean of construction residue. Aggregates will conform to ASTM C-33 and ASTM C-331
Define hourly ratings required as 1, 2, 3, or 4 hours.
Field Constructed Mock-ups
Construct a sample panel, no less than 4' x 4', of units of each color and size to be used in the project.
Protection of Work: Cover walls each day after installation to keep open walls protected and dry. After units are installed they should be protected from damage by other trades performing operations that can stain or mar the finished surfaces by covering walls with plastic. Corners should be protected from damage after installation by covering them with plywood.
Provide adequate lighting for masonry work by placing all lighting a reasonable distance from the wall for even illumination. Do not use trough lighting.
Keep walls clean daily during installation using brushes, rags, or burlap squares. Do not allow excess mortar lumps or smears to harden on the finished surfaces. Harsh cleaning methods after walls have been erected may mar the surface of the blocks. Clean the completed walls with a detergent masonry cleaner strictly following the manufacturer's instructions including thorough rinsing. Do not use muriatic acid or abrasives on the finished surfaces. DO NOT POWER WASH. High-pressure power washing is not recommended.
Field Coat Application
All LustreStone blocks are made to comply with ASTM-90 Type 1 specifications. For completely finished walls, a field-applied treatment of sealer is recommended after final clean down. For a high-gloss finish, use CP #1422. Apply to all LustreStone walls after clean-down and when the walls are dry. Apply the acrylic sealer evenly to cover the entire surface without forming drips or runs. For maximum coverage and best appearance, apply acrylic sealer with airless spray equipment. LustreStone will provide some resistance to moisture; however, the facing is not intended for use as an impervious surface. If an impervious surface is required, compatible water repellent must be used to completely seal out moisture.