Ronseal Knot Block Primer & Undercoat White 2.5L

Ronseal Knot Block Wood Primer & Undercoat is an effective solution to stopping wood knots and wood resins showing through your paint.

This primer and undercoat also covers bold colours, dark marks and aids in your chosen paint sticking to the wood.

It makes sure you get a flawless finish that won't 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

Colour: Pure Brilliant White

Size: 2.5L