Overview

Rustins Quick Dry Polyurethane Varnish is a high-performance, water-based varnish that provides a tough, durable finish designed to resist cracking, peeling, and blistering. Perfect for both interior and exterior wood surfaces, it is ideal for doors, windows, garden furniture, conservatories, and other hardwood and softwood applications. It can also be used to seal concrete surfaces, offering long-lasting protection with a low-odour, non-yellowing formula that highlights the natural beauty of the wood grain.

• Durable, long-lasting protection for wood and concrete
• Enhances and preserves natural wood grain
• Quick-drying for fast, efficient application
• Low odour and non-yellowing formula

Preparation

Ensure all surfaces are clean, dry, smooth, and free from wax, grease, or other contaminants. The surface must be sound and well-prepared for a durable finish.

• Fill large cracks, open joints, and any damaged areas with a high-quality flexible filler. Allow to dry and sand smooth if necessary.
• Wash oily woods, knots, or resinous areas with white spirit to remove excess oils.
• Remove mould, lichens, algae, or moss using a brush, scraper, and a mild bleach solution. Rinse thoroughly and allow the surface to dry completely.
• Apply Rustins Wood Dye to bare wood before varnishing if a deeper colour or enhanced grain effect is desired.

Application

• Use a synthetic brush and apply liberally, finishing with the wood grain for a smooth, even coat.
• First Coat (Exterior Use): On hot days, the first coat can be diluted with up to 15% water. Avoid applying to hot surfaces, in strong sunlight, or when rain is likely.
• Apply 3 coats in total. Lightly sand the surface after the first coat if the wood grain raises.
• With each successive coat of coloured varnish, the finish will darken. To maintain a desired shade while achieving the necessary total coating thickness, a final clear coat can be applied.
• Ideal application temperature: 15-25°C.
• Do not apply below 10°C, in high humidity, or if rain is expected.
• Maintenance (Exterior Use): For outdoor surfaces, re-coat every 2-3 years, depending on exposure. Clean the surface with a mild detergent solution and lightly sand to provide key before re-coating.