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EXTERIOR 450 Top Coat / Varnish - Flat - General Finishes 946ml

£39.95

General Finishes Exterior 450 Topcoat in a  Flat finish. a clear-drying finish suitable for vertical exterior surfaces, such as fences, patio furniture, garage doors and entrance doors.

It is not recommended as a deck finish. Exterior 450 is fortified with UV absorbers to stabilise and protect the integrity the finish and built-in mildewcides to slow mold and mildew growth. It performs well as a clear coat or as an optional topcoat over darker colours . Do not use over light or white paints as yellowing may occur. *The UV additive in 450 Clear will protect the integrity of the film, but will not prevent the wood from changing colour from sunlight.

Dry 2+ hours between coats in ideal conditions: 70°F/21°C; 50% humidity. Be sure to allow adequate dry time. You can tell if a water-based finish is dry if it forms a powder when lightly sanded with a fine-grade (220-320) foam sanding pad. If in doubt, wait longer. Rushing the dry time can cause "blush," which is clouding in the finish due to moisture trapped between the layers. Increase dry time if:

  • Humidity is over 80%
  • 3+ coats are applied
  • Thick coats are applied
  • To accelerate dry time in humid conditions, add General Finishes Accelerator and work in a space with good ventilation and air movement. If you decide to re-coat before the recommended time, test dryness.

Available | 946ml.