For rotten wood & large repairs.

Cuprinol Ultra Tough Wood Filler is a tough and durable formula for repairing damage caused by wet rot and for major joinery repairs.

It is a fast-setting, 2-part filler suitable for exterior and interior use. It gives an extremely tough, long lasting, weather resistant repair which resists shrinkage and cracking. For major decay and wet rot repairs, we recommend that you treat the area with Cuprinol Ultra Tough Wood Hardener prior to filling. This strengthens and reinforces rotten fibres, providing a solid base for the wood filler and giving a cost effective, long term alternative to replacing rotten joinery. Cuprinol Ultra Tough Wood Filler can be screwed, sanded or filed once dry. Available in two colours, Natural and White, it may then be painted or stained. When overpainting we recommend using White and when staining using Natural*.

Natural, White

250g, 500g and 750g* *White (not available in 750g)