Cuprinol Ultimate Repair Wood Hardener

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Key benefits
  • Strengthens, binds and hardens loose wood fibres
  • Use in conjunction with Cuprinol Ultimate Repair Wood Filler, to achieve a long lasting weather resistant repair.
  • Solvent based
Technical characteristics
Technical Information
Product Features
  • Long lasting

Product Description

Cuprinol Ultimate Repair Wood Hardener is a rapid drying formulation for use in the repair of decayed wood. It strengthens, binds and hardens loose wood fibres to provide a solid base for filling or overpainting. In combination with Cuprinol Ultra Tough Wood Filler provides a long lasting, weather resiliant repair. Can be used outdoors and indoors.

Application Description

Cut away decayed and very soft wood back to a sound base. Remove all loose material. Allow wet wood to dry thoroughly. For best results and deep penetrating preservation, treat area with Cuprinol Wood Preserver Clear and allow to dry thoroughly. Decant Cuprinol Ultimate Repair Wood Hardener into the cap and using a brush, apply Cuprinol Ultimate Repair Wood Hardener liberally to the repair area and immediate surrounding area with 2-3 coats. Allow to harden for at least 6 hours before applying filler. Lightly sand treated area before painting. Avoid contact of fluid with sensitive surfaces such as paint or plastic.

Technical & Safety Documentation

  • cx_gb_en_ultimate_repair_wood_hardener.pdf

Tips & Advice

  • 1. Preparing the Surfaces
    Identify the full extent of any decay, by probing the wood with a sharp instrument. Cut out all badly decayed and very soft wood. Remove paint, varnish, dirt or loose material from the area for repair and immediately around it for about 25-50mm (1- 2 inches). If wood is wet, allow it to dry thoroughly before applying the wood hardener. Apply liberally by brush to the repair area and immediately around it. Apply 2-3 coats, allowing each to soak in before the next coat is applied. Do not allow previous coat to dry fully before the next is applied.
  • 2. Cleaning
    Reseal can after use. Remove as much product as possible from application equipment before cleaning. For best results use Polycell Brush Cleaner.