Cuprinol Exterior Wood Preserver

Cuprinol Exterior Wood Preserver is a lightly tinted, water-based wood preservative treatment suitable for most exterior wood, including structural and timbers in close proximity with plants (not seed boxes). Extra thorough drying must be allowed under service conditions before introducing plants.

Please note: Cuprinol advise that the 'black' version of this product is actually a dark grey. Please check colour suitability before starting any project.

Looking for an alternative wood preservative treatment? Try one of the following products from the Cuprinol range:

Ensure that all wooden surfaces to be treated are clean, dry and free from surface dirt, loose debris and any other surface contaminants.

Bare or New Timber

• Remove any surface biological growth, dirt and debris with a stiff brush, broom or scraper
• Areas affected by mould and algae should be treated with a suitable garden cleaner / fungicidal wash
• All rotten timber must be cut out and replaced
• If the wood surface is looking worn or has greyed from sun damage and the effects of weathering, Cuprinol Garden Furniture Restorer can be used to revive the wood before applying Cuprinol Exterior Wood Preserver
• Any holes, gaps or splits in the surface of the wood can be filled with Cuprinol All Purpose Wood Filler or Cuprinol Ultra Tough Wood Filler

Previously Coated Timber

Existing surface coatings such as paint or varnish must be fully removed back to bare wood before using Cuprinol Exterior Wood Preserver, either by sanding or using a suitable wood stripper.

Always do a small test area before beginning any project to assess the appearance and suitability of the finish. Follow the manufacturer's instructions on the tin at all times.

Please Note: Cuprinol Wood Preserver is not suitable for use on beehives and other beekeeping equipment. Timber treated with this product will not be suitable for paint, varnish or wood stain finishes. The colour of treated wood may be affected by type and condition of wood and may be modified by previous treatments.

This product is not suitable for spray application. Shake or stir thoroughly before and frequently during use to ensure an even colour.

1. Apply 2-3 coats or Exterior Wood Preserver with a suitable brush, in the direction of the wood grain
2. Allow 4 hours drying time between coats
3. For best coverage and protection, three coats are recommended

Cuprinol Exterior Wood Preserver can be used as a standalone product or over-coated with a clear exterior wood finish if required.

Maintenance

To maintain the surface finish and its protective properties, simply re-apply a fresh coat of Cuprinol Exterior Wood Preserver as and when required, following the Preparation and Application instructions above.

Cuprinol Ducksback is very heavily wax enriched and is designed to repel liquids. For this reason, you would not be able to apply the Exterior wood preserver over the Ducksback until all of the wax is removed and liquid no longer beads on the surface.

This will prevent new growth of algae & mould but any biocidal growth that is already present needs to be cleaned with a strong multicide such as the Cuprinol Decking Cleaner before application of any new product. The problem will continue to persist each year otherwise.