Mastertop P 679 

Mastertop P 679 is a single component, moisture curing polyurethane adhesion promoter, containing solvents.

Mastertop P 679 is primarily intended for use as an adhesion promoter on sand broadcast epoxy primers under spray and hand applied waterproofing membranes.

Mastertop P 679 also finds use as a primer on timber and some plastic substrates.