Silicone Coating Application
Nutech NXT Silicone is a ready-to use, high solids, single component, moisture curing, fluid applied waterproof silicone coating. NXT Silicone Roof Coating is a breathable membrane possessing superior weathering and water resistance characteristics. Silicone coating application is very quick, simple and effective.
All surfaces to be coated must be clean, dry, and paintable. It may be necessary to power wash and prime to enhance adhesion. If applying to Asphalt/bitumen/felt roofs Nutech Paints recommends one coat of Nutech Asphalt primer or similar be applied to prevent possible Asphalt bleed. All roof joints, penetrations and surface overlaps should be re enforced with Poly Fabric as part of a priming system if needed before silicone coating application or in the first coat of NXT Silicone.
Simply brush, roll or spray onto the surface, for larger areas an airless spray machine is recommended, you can see an example of this type of machine here. This product may be applied directly to virtually any clean, dry surface. Nutech NXT Silicone can be applied in either 1 or 2 coat application process (See Product coverage rates) If applying over a contrasting colour separate applications of NXT Silicone may be needed to help with coverage. Each coat applied at right angles to the previous coat will help with uniformity and the correct dry film thickness. All silicone coating application must be evenly applied and pinhole-free. Before applying any subsequent coat of NXT Silicone the previous coat must be completely dry and cured. If applying to polyurethane foam it should be coated within 24 hours of application and subsequent coats should be applied within 24 hours of prior application to ensure full and uniform adhesion.
If any contamination of a thoroughly cured surface occurs, it must be washed before applying subsequent coats. Coating must be extended beyond the substrate to create a self-terminating flashing. Consult Nutech for recommended dry film thickness. Due to the bond agent present in all coating, colors may be used as either a base or a topcoat. The coating will cure in 2-8 hours, dependent on weather conditions (such as temperature and humidity), after which another coat can be applied. A #11 ceramic roofing granule may be installed in the topcoat to improve aesthetics, traffic resistance and impact resistance.
It is not recommended that silicone coating application be carried out at temperatures below 10°C (50°F.), or if rain is expected within 1 hour of application. This product may be applied at lower temperatures; however the cure time will be extended.