Cuprinol Ultra Tough Wood Filler

Cuprinol Ultra Tough Wood Filler

A high performance, 2 part wood filler for repairing damage caused by wet rot and for major joinery repairs.



A solvent-based, quick drying two-part wood filler. Best used on decayed wood after it has been treated with Cuprinol Ultimate Repair Wood Hardener or alternatively, for any general purpose filling of cracks, splits or nail holes in interior or exterior joinery.

  • Tough and durable, weather resistant 2-part wood filler
  • Ideal for repairing damage caused by wet rot
30 mins

Usage Guide


Ensure that surfaces to be filled are clean, dry and free from dust, dirt or any other surface contaminants.


Always do a small test area before beginning any project and follow the manufacturer's instructions on the tub at all times. This product should not be thinned.

  1. Apply wood filler with a suitable filling knife
  2. For deep holes, build up in layers, allowing each layer to dry
  3. Leave proud and when fully dry sand down and dust off

Tech specs
Size 250g, 500g, 750g
MPN Please Select Size/Option
GTIN Please Select Size/Option