Traditional knotting compound for sealing knots, resinous, and creosoted timber to prevent staining and resin bleed-through. Fast-drying, easy to apply, and ready for priming in one hour.👉 All prices include VAT.
£6.22 – £11.90
Foam4U’s Knotting Sealer Solution is a professional-grade sealer designed to stop resin and sap bleed-through on timber surfaces before painting. It’s ideal for sealing knots, resinous, or creosoted wood, preventing unsightly staining or blistering under the paint film.
The quick-drying shellac formula ensures a clean, stable base for primers and topcoats, while providing an essential barrier that locks in natural wood resins. Apply liberally over knots and surrounding areas, allow to dry for approximately one hour, then prime directly — no sanding required.
Seals knots and resins to prevent bleed-through and staining.
Fast drying: ready for priming in just one hour.
Traditional shellac-based formula for reliable performance.
Two coats recommended for resinous or creosoted timber.
Brushes clean easily with methylated spirits.
Sand the surface smooth before application.
Apply liberally over knots and nearby areas using a clean brush.
Allow approximately 1 hour to dry before applying primer.
Do not sand the sealed area after applying knotting solution.
For heavily resinous wood, apply two full coats for best results.
Softwood joinery and doors
Resinous or creosoted exterior timber
Sealing knots prior to painting or varnishing
Professional surface preparation and restoration work
A proper knotting sealer is the foundation of a flawless painted finish. This professional-grade formula provides dependable coverage, fast drying, and total resin control — ensuring your paint system performs exactly as it should.
Prepare surfaces and tools with Upholstery Sundries — including sandpapers, brushes, and finishing cloths.
Pair with compatible finishes and primers from our Woodcare Products collection for durable, long-lasting results.
For sealing and coating timber after treatment, view Woodcare Stains & Lacquers for topcoat and finishing options.
125ml, 300ml
© 2025 Foam 4 U | Sitemap | Privacy Policy