Barrettine Patent Knotting

Regular price £6.92 Inc VAT
Sale price £6.92 Inc VAT Regular price
Tax included.
£5.77 Exc VAT

No area of use specified.

Barrettine Patent Knotting is a fast-drying Shellac dissolved in alcohol, intended for application over knots and resin-rich sections in wood to seal them before painting.... Read More

Payment methods


  • Apple Pay Apple Pay
  • Google Pay
  • Mastercard
  • Maestro
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Rabart Variant Product Code: BRTWODKNO00250XXXXX

Product Description

Barrettine Patent Knotting is a fast-drying Shellac dissolved in alcohol, intended for application over knots and resin-rich sections in wood to seal them before painting. This serves both indoor and outdoor purposes. By utilizing Patent Knotting, the natural resins present in wood are shielded from being dissolved by paint solvents, thus preventing them from permeating to the surface and causing discolouration of the painted finish.

After usage, it's essential to thoroughly clean brushes with Barrettine Methylated Spirits right away. It's important to note that this product is not recommended for situations where water-based or lighter-coloured modern paints will be applied. For such scenarios, White Knotting should be employed.

Suitable for both indoor and outdoor application.

Key Information

  • Recoat
    1 hour
  • Application method
    Brush or lint free cloth
  • Clean-up
    Methylated spirit or brush cleaner

Product Features


Seals knots and resinous areas in timber (esp. softwoods like pine and spruce) to prevent resin bleed through into paint or stain.


Ideal for use under oil-based paints. Not generally recommended where light-coloured modern or water-based coatings are being used (use White Knotting instead in such cases).


Shellac-based, fast-drying solution in alcohol.

Brand Barrettine
Type Sealer
Suitable For Interior and exterior woodwork - doors, furniture, sheds
Water Or Solvent Based Solvent
Key Features A quick-drying Shellac in alcohol, which is applied over knots and resinous areas in wood, to seal prior to painting
Application Methods Brush or lint free cloth
Recoat Time 1 hour
Number Of Coats 1
Cleanup Methylated spirit or brush cleaner
SKU BRT / POPK.25
GTIN / Barcode 5015861292209

Shipping & Returns


Get FREE Delivery On Orders Over £60*

Enjoy Free delivery when you spend £60 or more on your order. We strive to make shopping with us as easy and rewarding as possible, so take advantage of this offer today and have your items delivered right to your doorstep at no extra cost. *Terms and conditions apply.


View our shipping FAQs