Minwax® High Performance Wood Hardener

Minwax® High Performance Wood Hardener is a quick drying liquid formulated to strengthen and reinforce decayed or rotting wood.


  • The hardener penetrates deep into the wood and its special resin binds and reinforces the decayed wood fibers
  • High Performance Wood Hardener seals from further moisture penetration and hardens to a rock hard solid base for lifting
  • Designed to strengthen wood fibers of interior or exterior rotted wood prior to the application of Minwax® High Performance Wood Filler

  • PREPARATION STEPS
    • Completely remove decayed and very soft, crumbly wood until you reach reasonably sound wood. Wood should be dry, free from dirt, grease, oil and loose paint particles.
    • Shake can well
  • APPLICATION STEPS
    • Apply Minwax® High Performance Wood Hardener with a disposable bristle brush to the softened wood to completely saturate the area.
    • For strength, apply several coats in quick succession until a shiny surface appearance is obtained.
    • Allow to harden for 2-4 hours before filling void with Minwax® High Performance Wood Filler.
    • Sand, paint, or stain if desired.

Reviews

From Real Homes

Get Inspired

See what’s possible, and then make it happen. Tag @minwaxusa on Instagram to have your project featured.

  • Minwax® Product Warranty
    SATISFACTION GUARANTEE LIMITED WARRANTY. This warranty is made to you, the product purchaser who owns the property where the product is applied. This warranty is not transferable except that if a contractor purchased and applied the product to the property for you, then the warranty is transferable to you. If this product, when applied and maintained according to product application and maintenance instructions to a properly prepared surface, fails to perform to your complete satisfaction, Minwax shall, upon presentation of proof of purchase, either replace an equivalent quantity of product free of charge or refund the original purchase price. For a replacement or refund please contact customer service at 1-800-523-9299. This warranty shall not apply to any defect, damage, or product failure resulting from improper surface preparation, structural defects, environmental damage, failure of a previous product, deterioration or defect in the underlying substrate, or improper application or maintenance of the product. Your exclusive remedy, and Minwax's sole liability, under this warranty is the replacement of product or refund and does not include labor or costs associated with the application or removal of any product. IN NO EVENT SHALL MINWAX BE LIABLE FOR ANY TYPE OF INCIDENTAL, CONSEQUENTIAL, SPECIAL, EXEMPLARY, PUNITIVE, OR INDIRECT DAMAGES WHETHER OR NOT PURCHASER IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL HAVE THE SAME DURATION AS THE ABOVE EXPRESS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts or limitations on incidental or consequential damages, so portions of the limitations above might not apply to you. This warranty gives you specific legal rights, and you may have other rights, which vary from state to state.