Rok Polyurethane Top Coat
Description 
Rok Polyurethane Top Coat is a two component, UV stable, solvent based polyurethane seal coat. It is available either pigmented or clear.
Typical Applications o Top coat for Dr. Fixit and ROK flooring systems o Interior and exterior coating applications .o Final waterproofing, weather resistant coating on Dr. Fixit roofing systems Features o UV stable. o Suitable for exterior applications o Excellent abrasion resistance o Gloss finish improves aesthetic appearance and reduces dirt retention o Excellent adhesion to a variety of substrates o Available in a range of standard colours
Packaging
4 and 20 litres
Method of Application
1 SURFACE PREPARATION o Concrete and screed should be at least 28 days old with a maximum relative humidity at the surface of 75% when measured with a hygrometer to BS 8201-81. Surfaces must be free of all contaminants and surface laitance. o All dirt, oil, grease and fats should be removed using proprietary degreaser or detergent as appropriate and the surface allowed to dry prior to further treatment. All construction contaminants such as plaster, fillers and paint must also be removed. o The surface must be free of laitance and defective concrete or screed. Laitance can be removed mechanically by either vacuum assisted planning, scabbling, shot blasting or diamond grinding equipment. Any weak or friable material exposed during the preparation process should be removed and repaired using a suitable Dr. Fixit repair mortar. The appropriate preparation technique should be chosen considering the site conditions and the profile created considering the material to be applied. o Immediately prior to the material application, all dust must be removed from the prepared surface using industrial vacuuming equipment. o Should a primer be needed for a pigmented top coat use Dr. Fixit EPR309 Primer.
2 MIXING o Thoroughly mix Part A and Part B in their individual containers to redistribute any settlement and then transfer and mix together in a separate clean mixing container. Mix the material using a slow speed electric mixer for two minutes.
3 APPLICATION o Apply the mixed material by brush or roller at the recommended coverage rate.
4 CLEANING o Clean tools and equipment immediately after use with Dr. Fixit Tool Cleaner. \
Note:
o Application temperature of the substrate should be in the range of + 10 to 40°C. o Do not dilute with thinners or solvent. o Apply the material in properly ventilated areas. o When applying externally it is recommended to avoid direct sunlight and avoid application during the hottest times of the day.