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Blueperry agriculture (UK)£10.88Visit shop Blackfriar Patent Knotting 250Ml Bf0730001f1
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This Blackfriar Patent Knotting in black is designed for painters and decorators needing to achieve a perfect, smooth finish on wood surfaces before painting. Its primary benefit is effectively sealing knots and resin, particularly on new or stripped wood, preventing bleed-through. A key consideration is its specialized formula, which requires proper ventilation during application. The product is a 250ml solution made from pure shellac and methylated spirit, ideal for preparing wood for priming and painting.
| Colour | Black |
|---|---|
| Model Part Number | BF0730001F1 |
| Brand | Blackfriar |
Patent Knotting is used to seal knots and resinous areas in wood before painting. It prevents these natural wood substances from bleeding through paint, ensuring a clean and smooth finish.
It is primarily designed for new wood or wood that has been stripped back. It is particularly effective on softwoods like pine that are prone to resin bleed. Always test on an inconspicuous area first.
Under normal conditions, it dries relatively quickly, typically within 15-30 minutes, allowing for subsequent coats of primer soon after.
Brushes should be cleaned immediately after use with methylated spirits.
Yes, it is essential to apply a suitable primer over the dried Patent Knotting before applying your topcoat of paint. This ensures optimal adhesion and finish.
The black color can be advantageous for masking dark wood undertones and providing a uniform base, especially when painting with lighter colors over woods with dark knots.
This product is available in a 250ml tin.
Ensure a sufficient coat of Patent Knotting was applied to fully cover the knot. Reapply Patent Knotting and allow it to dry completely before priming and painting.
Apply thinner coats. Ensure the brush is not overloaded and is applied evenly. Light sanding after drying may help achieve a smoother surface if needed.
Ensure adequate ventilation. Avoid applying in very high humidity or cold conditions. Ensure the surface is completely dry before application.
This is unlikely if properly primed. Ensure a good quality primer is applied over the dried Patent Knotting. A second coat of primer may be necessary.
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