Ronseal Knot Block Primer & Undercoat 750ml White Option:White 750ml |Effective against a wide range

|Effective against a wide range of germs

Fills up to 10mm deep in one application|Can be painted

Polythene backing stops tread through

0mm²|E terminal capacity 3 x 4

Ronseal Knot Block Primer & Undercoat 750ml White Option:White 750ml |Effective against a wide rangeOur Knot Block Wood Primer & Undercoat completely stops wood knots and wood resins showing through your paint. This primer and undercoat also covers bold colours, dark marks and helps your paint to stick! It makes sure you get a flawless finish that won'y yellow, crack or peel. Perfect for knotty wood like pine. Guaranteed to completely block wood knots Ready to paint over in 4 hours Use on bare or previously painted wood