Envirograf HW04 Undercoat is a white water based undercoat for use over Envirograf HW01 White Intumescent Coating before applying any proprietary top coat or Envirograf HW Acrylic Top Coat.
Preparation and Application
All surfaces should be clean, dry and free from contamination, with no loose particles.
Apply over Envirograf HW01 White Intumescent Coating with either brush, roller or spray. Do not thin – use straight from the can. However, when applied by spray, up to 10% water may be added. The coating is touch dry in 2 hours.