Grey Roofing Topcoat

Shelf life and Storage

Please ensure you rotate stock and use within shelf life. Please note the Shelf life for this product relates to unopened containers; only open container prior to use. Read carefully the Safety Data Sheet before use Store in the shade, out of direct sunlight. Keep storage temperature below 25°C.

Key Features and Benefits

• Good resistance to Surface Yellowing
• Medium reactivity
• Paraffinated 
• Pigmented
• Preaccelerated 
• Super Low Viscosity
• Thixotropic

Description

Grey Roofing Topcoat is designed for coating flat surfaces exhibiting good levelling properties BR Topcoats are ready to use, easy to brush, sag resistant, fast curing and require only the addition of the correct amount of an appropriate MEKP to cure. TOPCOATS are not designed to be used for swimming pool recoating/ relining applications TOPCOATS contain wax and cure tack free to provide an attractive cosmetic film on the back of composite pieces.

Application

Brush grade materials are designed for hand application to the mould and carefully levelled with a brush for even thickness. Brush grade materials are not designed for spraying or diluted with solvent to spray. Do mix the Gel coat prior to use, preferably using a mechanical mixer with sufficient power for the appropriate container at low rpm. Mixing for 10 minutes every day is usually sufficient. Do NOT use air bubbling directly to mix. Do not overmix the gel coat, it may break down viscosity, increasing tendency to sag and also result in styrene loss which could contribute to porosity. Ensure Gel coat is used at minimum liquid temperature of 18°C including the mould used and workshop environment conditions Film thickness above 600 micron may pre-release, trap porosity, crack and are more subject to weathering discolouration. Film thickness below 300 micron may not cure properly, may be hard to patch, have more print through, and be more susceptible to water blisters Follow best practice application techniques Ideal thickness is 500 micron with a range of 400-600 microns wet film This top coat is ready to use -It contains wax to allow tack free curing Use only the recommended MEKP Peroxide dosage between 1.2 to 3.0%w/w.