EcoThane PU Primer is a single component product used to prepare the surface of GRP AND Single Ply prior to the application of the EcoThane Waterproof System. It’s designed for flat & low-pitched roofs, offering coverage of 25m2 per 5kg. EcoThane PU Primer is fast curing so allows for the same day application of waterproofing. Before applying ensure the surface is cleaned and free from any debris or grease. Repair all damages and fill any voids before applying to a rate of 0.2kg per 1m2. The average cure time is between 15 minutes and 2 hours dependent on the surface, the temperature and of course, weather conditions. Do not apply this primer when rain is forecasted. This product comes with a 10-year guarantee when installed to instructions. EcoThane Waterproofing Primer Specification Coverage: 25m²Guarantee: 10 years