Polycarbonate Specifications & Tolerances:
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• Brand Supplied: Polycarbonate shall be Verolite, Lexan, Lexan Plus (all as mfg. by Sabic) or other internationally recognized brand with an equal or better warranty, UV protection, drip guard and light transmission characteristics. If specific fire codes must be adhered to always email us, prior to placing order, to ensure compliance.
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• Thickness +/- .5 mm • • Width +/- 1/8" • • Length +/- 1/4"
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• Visual defects (inclusions, bubbles, black specs, gel,etc) no visual defects are allowed by inspection from a distance of 1 M. If not visible by using this method, sheet would be considered acceptable. Only 2 defects for every 3 linear meters of material with defect size not exceeding 1 mm in diameter or if not visible from inspection from 1 mm distance will be acceptable.
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• Reporting Defects We must be notified immediately about defects or claim may be jeopardized. Do not install poly. if you notice defects.
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• Condensation Multi-Wall polycarbonate is not a sealed unit and condensation will occur between the layers. This is normal and can not be avoided. Differences in temperature and/or humidity between interior and exterior of the structure creates situation. Typically when the sun shines on the sheet or when climate differences stabilize the condensation decreases or goes away. For condensation to drain properly the channels must be running vertically.
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If total elimination of condensation is crucial then use insulated glass. Please note insulated glass seals eventually fail and condensation occurs. Insulated glass units come with a 5 or 10 yr warranty. No warranty is available in high humidity applications such as greenhouses or pool enclosures, or in overhead applications such as skylights.
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• Roof Slope Note: Minimum 2/12 roof pitch required in areas with substantial rain, trees overhead dropping pollen (or other tiny particles) and damp conditions where the combination will cause mold and mildew to breed. Under these conditions it is crucial that water cascades off the roof, keeping the polycarbonate clean.
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• Hurricane Zone: Sundance Supply will only provide polycarbonate and install systems for projects that receive an engineers stamp and are approved by local building departments. At design time it is the customers responsibility to receive an engineers stamp and approval from your local bldg. dept. Sundance Supply takes no responsibility for the final design and installation of our products in hurricane zones, but will work closely with customers and their architects and engineers to receive bldg. dept approval. It is the responsibility of the bldg. dept. inspector to approve project after installation. If you are in a hurricane zone and have not received bldg dept. approval, as noted above, call us at 888-775-6176 for guidance on how to proceed.