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Important Considerations

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TECHNICAL/INSTALLATION: IMPORTANT CONSIDERATIONS

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1. Warning: Concrete veneer contains Crystalline Silica (quartz) and traces of other hazardous substances which are released as dust and can be inhaled when drilling, dry-cutting, or shaping the stone. In the state of California, Crystalline Silica is a chemical known to cause birth defects, cancer, and other reproductive harm. Be sure to use correct safety precautions. It has been determined — broken pieces can and should be used when installing stone. Raw materials used in production may vary slightly. We recommend that you blend stones from various boxes throughout the installation area. Variations are inherent in all manufactured stone and concrete products. Questions regarding suitability and/or acceptability must be resolved before installation. Using the product constitutes acceptance.

2. Temperature and Moisture Considerations. Temperature and moisture influence when and how NevilStone is installed. Do not install stone during freezing temperatures. Low temperatures prevent mortar from properly setting up. Temperature must be at least 38 degrees and rising prior to installation. To prevent stone from absorbing too much moisture from the mortar during hot or dry weather installation, you can add moisture to the back of each stone with a brush or sponge. Moisten the surface of concrete, masonry or scratch coat before installing during hot or dry weather.

3. Exterior Considerations. To ensure the durability and beauty of NevilStone products, make sure the stone surfaces will be protected from excessive water run-off. When run-off is combined with severe freezing and thawing conditions, the surfaces of the stones may be damaged. Be sure gutters, downspouts, and flashing are installed and working properly before installing NevilStone products.

4. Observe Codes and Sound Building Practices. Carefully follow the recommended handling and installation procedures and follow all relative building codes and requirements. The NevilStone technical support staff can provide information on building codes, requirements and other technicaldata relating to the product, handling, and installation.

5. Maintenance of Nevil Stone. NevilStone products require very little or no maintenance.
A. Cleaning. In exterior areas where dust or dirt build up, stone should be periodically washed down. Do not use high pressure powerwashers. For areas that need a more thorough cleaning, scrub thoroughly using a bristle brush and a solution of granulated soap or detergent with water. Rinse immediately with clean water. Do not use a wire brush since it can damage the stone’s surface. Do not use acid or acid-based products on NevilStone.
B. Scuffing. Most scuff marks can be removed using the cleaning methods described above. Sealing NevilStone may also help minimize scuffing. In cases of excessive, undesired scuffing which cannot be removed with the above cleaning techniques, NevilStone can provide a scuffing touch-up kit. Most scuffing will fade or disappear completely in time with no treatment at all.
C. Removing Efflorescence. In the unlikely event efflorescence should occur, allow the stone to dry thoroughly, then scrub with a soft bristle brush. Rinse immediately with clean water and allow to dry. If efflorescence is still visible, scrub with a solution of 1 part white household vinegar and 5 parts water. Rinse with clean water.
D. Sealing any masonry surface increases the longevity and life of the project. Sealing is mandatory in all mortarless joint applications, applications in high-alkaline environments (such as coastal applications, applications where de-icing agents are used, etc.), and environments where multiple freeze-thaw cycles occur. Always use a penetrating non-film forming sealer applied in accordance with the manufacturer's specifications.