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Blackfriar Polyurethane Varnish Soft Gloss for Interior Wood 2.5L 2.5 kg

Manufactured by Trade Supplies UK

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Blackfriar Polyurethane Varnish is a tough, durable, solvent-based finish designed to protect and enhance all interior wood surfaces. This high-performance varnish is ideal for furniture, floors, doors, and woodwork. It highlights the natural colour and grain of timber while providing long-lasting protection against daily wear and tear.

The polyurethane formulation delivers superior resistance to heat, diluted acids, and general household spills, making it perfect for high-traffic areas and decorative woodwork. Its fast-drying, recoatable nature allows efficient application with a brush or roller, giving a smooth, even finish every time.

Available in soft gloss, soft satin, and soft matt finishes, Blackfriar Polyurethane Varnish provides a professional-quality finish that combines durability with aesthetic appeal. Manufactured in the UK to strict quality standards, it is a reliable solution for DIY and trade projects seeking a premium interior wood finish.

Key Features & Benefits

  • Durable Protection: Protects interior wood from wear, heat, and diluted acids

  • Enhances Wood Appearance: Highlights natural timber shades and grain

  • Versatile Application: Suitable for floors, furniture, doors, and interior woodwork

  • Multiple Finishes: Soft Gloss, Soft Satin, Soft Matt for tailored aesthetics

  • Fast Drying & Recoatable: Touch dry 2–4 hours, recoatable after 16 hours

  • Solvent-Based Formula: Ensures a smooth, tough, long-lasting finish

  • Easy to Apply: Works with a brush or roller for professional results

  • Interior Use: Ideal for all internal wooden surfaces, including high-traffic areas

Suitable Substrates

  • Interior wood furniture, doors, and paneling

  • Wooden floors, stairs, and handrails

  • Interior wood trim and decorative joinery

  • Previously varnished or painted timber (ensure proper preparation)

Coverage & Spread Rate

  • Approx. 14 m² per litre per coat (surface and porosity dependent)

Drying & Curing Times (@18°C)

  • Touch Dry: 2–4 hours

  • Recoatable: 16 hours

  • Hard Dry / Full Cure: 3 days

Application Methods

  • Brush

  • Roller

Finish Options

  • Soft Gloss

  • Soft Satin

  • Soft Matt

Storage & Clean-Up

  • Store sealed between 5–30°C, away from ignition sources

  • Clean tools with the appropriate thinner before curing

  • Avoid excessive thinning to maintain film durability.

Safety Disclaimer

  • Solvent-based and flammable; apply in well-ventilated areas

  • Keep away from sparks, naked flames, and heat sources.

  • Avoid prolonged skin contact; wear gloves and eye protection.

  • Dispose of waste in accordance with local regulations

Surface Preparation

  • Ensure all timber surfaces are clean, dry, and free from dust, grease, wax, or loose old finishes.
  • Sand bare wood lightly to open the grain and improve adhesion.
  • Previously varnished or painted surfaces should be sanded to provide a key for the new coat.
  • Wipe down with a clean, lint-free cloth to remove sanding dust.

Mixing

  • Stir the varnish thoroughly with a paddle or paint stick before use.
  • Stir periodically during application to maintain uniform consistency.
  • Avoid shaking to prevent air bubbles in the finish.

Application Method

  • Apply with a high-quality brush or a short-nap roller suitable for solvent-based coatings.
  • Spread evenly along the wood grain, maintaining a wet edge to avoid lap marks.
  • For larger areas, work in sections to maintain an even finish.

Coats

  • Apply 1–2 thin coats for optimal protection and appearance.
  • Allow each coat to touch dry (2–4 hours) before lightly sanding with fine-grit paper to remove minor imperfections.
  • Recoat after 16 hours to achieve a durable, long-lasting finish.

Curing & Traffic

  • Light handling: 16 hours after recoating
  • Full hardness and maximum protection: 3 days
  • Avoid heavy wear, moisture exposure, or cleaning chemicals until the cure is complete.

Pro Tips

  • Apply at temperatures above 10°C and below 30°C for best results.
  • Avoid painting in direct sunlight or high humidity to prevent drying issues.
  • For high-traffic surfaces such as floors, two coats are recommended.
  • Use the matching finish (gloss, satin, or matt) consistently for a uniform appearance.

Clean-Up

  • Clean brushes and rollers immediately after use with the recommended solvent or thinner.
  • Dispose of waste and empty containers according to local environmental regulations.
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Frequently Asked Questions

What surfaces can Blackfriar Polyurethane Varnish be used on?
Suitable for all interior wood surfaces such as floors, furniture, doors, and panelling. It can also be applied to previously varnished or painted wood after proper preparation.
How many coats should I apply?
1–2 thin coats are recommended. Two coats provide maximum durability and a smoother, more even finish.
How should I prepare the wood before applying?
Ensure the surface is clean, dry, and free from grease, dust, or loose finishes. Lightly sand bare wood and wipe away dust before application.
Can it be applied over existing varnish or paint?
Yes, provided the surface is lightly sanded, clean, and free from flaking material to ensure adhesion.
What is the recommended drying time?
Touch dry in 2–4 hours, recoatable after 16 hours, and fully cured in 3 days (at standard conditions).
What finishes are available?
Available in Soft Gloss, Soft Satin, and Soft Matt to suit your desired look.
How should I apply the varnish?
Apply with a high-quality brush or short-nap roller, working along the wood grain. Maintain a wet edge to avoid lap marks.
Can it be used on furniture that will be cleaned regularly?
Yes, once cured it forms a tough, water-resistant film that withstands daily use and light cleaning.
Is the varnish heat or chemical-resistant?
Yes, it resists mild heat and diluted acids, making it suitable for kitchen tables, furniture, and similar surfaces.
How should I clean my tools after use?
Clean brushes and rollers immediately with the recommended solvent or thinner before the varnish hardens.
Can this varnish be applied in high humidity or low temperatures?
Apply between 10 °C and 30 °C. Avoid high humidity or direct sunlight, which may slow or affect curing.
Will the varnish yellow over time?
No, it is formulated to maintain clarity and enhance the natural tones of wood without yellowing.
Is sanding between coats necessary?
Yes, light sanding between coats removes imperfections and improves adhesion for a professional finish.

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Regular price £50.99 (inc VAT)
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