Johnstones Trade
Heavy Duty Yacht Varnish Gloss Clear 5L

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A flexible, hardwearing varnish for exterior timber surfaces. Resists UV attack.
Heavy Duty Yacht Varnish Gloss Clear

In detail

Johnstone's Trade Heavy Duty Yacht Varnish is a solvent-based coating for exterior timber including, doors, frames and joinery. Has a flexible film, that is hardwearing and resistant to UV attack. 

Application is by brush or spray with coverage up to 16sq/m per litre. Recoatable between 16-24 hours.

Application Methods
Up to 16sq/m per litre 
VOC level
Not Recommended 
Touch dry
4-8 hours 
12-24 hours 
Suitable for...
Exterior use 
Brush cleaner or White spirit 

Additional information

Surface Preparation

Ensure all surfaces to be varnished are sound, clean, dry and free from dust, grease, polish or any other surface contaminant.

Remove any flaking or cracked varnish. Previously varnished surfaces in sound condition should be rubbed down with fine waterproof abrasive paper and rinsed thoroughly to provide a key.

Avoid the inhalation of dust. Wear a suitable face mask if dry sanding.

For best results, new or bare wood should be lightly rubbed down along the grain with fine abrasive paper, any knots sealed with a clear knotting solution, treated with a suitable clear wood preservative and allowed to dry.

Special precaution should be taken during surface preparation of pre 1960s paint surfaces over wood and metal as they may contain harmful lead.


  • Stir thoroughly before use.
  • Apply two or more coats of varnish evenly, by good quality brush along the wood grain as required, paying particular attention to the end grain.
  • Do not overlap the brush strokes.

Clearing Up

Remove as much product as possible from brushes before cleaning.

Clean brushes immediately after use with White Spirit or Turpentine Substitute. Replace lid firmly.

Do not empty product into drains or watercourses.