Seajet 117 Multipurpose Epoxy Primer is a two component primer, durable and protects your boat against osmosis with 4 roller coats. Suitable in combination with antifouling and two-component topcoats. An ideal first coat for GRP. Available in silver grey (recommended for below water) and off-white (recommended for above water). Type of product Primer Area of use Above waterline Below waterline Substrates Polyester Steel Aluminium Wood Cast-Iron Lead Application method Roller Brush Airless spray Coverage rate 9.96 m² p/liter Pack size 750ml  Type of primer Epoxy Suitable for osmosis prevention Yes