Minwax® High Performance Wood Filler

Minwax® High Performance Wood Filler permanently repairs damaged and rotted wood. It is used to fill gouges and holes in split, damaged or rotted exterior or interior woods.


  • Interior/exterior all-purpose wood filler
  • Will not crack or shrink
  • Hardens in 30 minutes
  • May be sanded, carved, planed or drilled

  • PREPARATION STEPS
    • Always wear high-quality chemical resistant rubber gloves and protective eyewear.
    • Surface must be clean, dry and free from paint, varnish, dirt and grease.
    • If working with rotted or soft wood, remove loose material and apply Minwax® High Performance Wood Hardener to strengthen wood fibers and to form a solid base for filling.
  • APPLICATION STEPS
    • Depending on the size of the wood repair, scoop desired amount of wood filler from the can into the plastic lid and squeeze in a small amount of wood hardener from the tube, using approximately a 16:1 ratio of wood filler to wood hardener. Mix thoroughly for approximately 30 seconds or until you no longer see the white color of wood hardener. Mix only as much as can be used in 15 minutes.
    • Apply the mixture immediately to the area to be repaired, using a plastic putty knife. Spread on a thin layer followed by a sufficient amount to fill the gap. (Note: To fill deep holes, spread on 1/8 inch thin layers one at a time until the hole is filled.) Slightly over-fil to allow for sanding down. Work quickly since the mixture remains workable for about 10 minutes at room temperature.
    • After approximately 20 minutes, the repair should be hard enough to be carved and shaped using a sharp modeling knife. Wait at least 30 minutes to sand, plane, or file. NOTE: Once Minwax® High Performance Wood Filler has hardened, then it can be painted or stained. To stain wood filler, see directions inside cap sticker. This product absorbs stain differently than wood. It is unlikely that exact color match to the original wood will be achieved.

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  • 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.