
High-performance Ronseal wood filler for deep repairs (5mm+). Quick-drying, durable & ideal for windows, doors & sills.
The Ronseal High Performance Wood Filler Hardener is a chemically bonded filler and catalyst designed for extremely tough repairs to wood without shrinking or cracking. Suitable for both indoor and outdoor use, it fills deep damage (over 5mm) and can be drilled, screwed, or planed after application.
Key Applications
This high-performance wood filler is perfect for repairing window frames, sills, doors, and door frames with severe damage. For minor or surface repairs, Ronseal Multi Purpose Wood Filler is recommended instead.
Available in three colours (Natural, Dark, or White), this versatile hardener ensures seamless blends with existing woodwork. The 30g sachet delivers an easy-to-use and mess-free application with a filling knife.
Features
Ideal for both professionals and DIY enthusiasts, the Ronseal High Performance Wood Filler Hardener offers a long-lasting solution for damaged wood surfaces.
H319
Causes serious eye irritation.
H315
Causes skin irritation.
H226
Flammable liquid and vapour.
H332
Harmful if inhaled.
H361D
Suspected of damaging the unborn child.
H372
Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
Always follow local regulations and product guidance. Use appropriate PPE.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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