PPG SigmaCover 400 is a two component high solids epoxy coating for concrete and metal.
This product has London Underground 1255 approval. PPG SigmaCover 400 (Amerlock) is a high performance, two-pack epoxy coating which is suitable for concrete and metal floors as well metal pipes and structural steel. Formerly known as SigmaCover 640, SigmaCover 400 is a self-priming, universal epoxy which has good adhesion on most coatings. SigmaCover 400 is available in a choice of colours, with a semi-gloss finish.