Wood Preservative Treatments: Durable Protection for Exterior and Interior Timber

Wood preservative treatments are essential for protecting timber against rot, fungi, mould, woodworm, and insect attack. By deeply penetrating the wood fibres, these treatments create a protective barrier that helps prolong the life of wooden structures exposed to harsh environmental conditions or high-moisture areas.

Typically used on garden furniture, sheds and fencing, wood preservatives come in either solvent or water-based formulas. Each type offers different benefits, with solvent-based preservatives, such as Barrettine Premier Wood Preserver providing deep, long-lasting protection, while water-based alternatives like Protek Wood Preserver ++ offer a low-odour, eco-friendlier option suitable for residential use.

Preservative treatments, including Ronseal Total Wood Preservative, often contain biocides and fungicides that actively prevent decay and deter wood-boring insects. Some products also include water-repellent agents and UV filters, offering additional surface protection against rain and sunlight. Coloured preservatives, in particular Cuprinol Ultimate Garden Wood Preserver, provide a decorative finish while protecting, whereas clear versions maintain the natural look of the wood.

Application is straightforward—treatments can be Brushed, or Sprayed, depending on the product and project requirements. It's recommended to apply a preservative before finishing with paint, stain, or oil, ensuring the timber is protected from within.

Whether you’re maintaining exterior joinery, garden structures, or treating interior timbers in high-moisture environments, wood preservative treatments provide essential first-line defence, helping reduce the need for costly repairs or replacements over time.

Key Benefits:

•Protects against rot, mould, fungi, and woodworm
•Deep-penetrating, long-lasting timber protection
•Available in either solvent or water-based formulations
•Clear and coloured options to suit aesthetic preferences
•Suitable for decking, fencing, sheds, cladding, and interior timbers

Summary:

Wood preservative treatments from brands like Cuprinol and Ronseal are a vital part of woodcare, providing essential protection against rot, fungi, and insect attack. By deeply penetrating the timber, they help prolong the life of wooden structures exposed to moisture and environmental wear. Used as a first-line defence, preservative treatments prepare wood for further finishing while reducing the risk of costly repairs over time.

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Displaying 8 products

Recommended Special Offer
  4.9/5.0  (2923)
A solvent-based preservative that offers microporous protection against wood rot, fungi, decay and mould. Available in 7 colours or clear.
  • 2-3 coats
  • 6m² per litre
  • 12 hrs drying time
More info
Available in 1L, 5L
Recommended Special Offer
  5.0/5.0  (1238)
A UV-resistant, deep penetrating, low odour protective treatment for all exterior wood that is harmless to beneficial insects and plants when dry.
  • 2-3 coats
  • 6m² per litre
  • 48 hrs drying time
More info
Available in 1L, 2.5L, 5L
Recommended
  5.0/5.0  (304)
A complete wood preservative treatment that protects exterior wood from wood rot, decay and woodworm.
  • 3 coats
  • 8m² per litre
  • 24 hrs drying time
More info
Available in 5L
Recommended Special Offer
  4.7/5.0  (16)
A clear, water-based wood preservative treatment for interior and exterior timber. Prevents insect attack, rot and decay.
  • 2 coats
  • 5m² per litre
  • 16 hrs drying time
More info
Available in 1L, 5L
  4.8/5.0  (150)
A clear, exterior wood preserver that protects against mildew, rot, blue stain and wood boring insects whilst reducing wood swelling and shrinkage
  • 1 coat
  • 6m² per litre
  • 12 hrs drying time
More info
Available in 750ml, 2.5L
  4.9/5.0  (149)
A low-odour wood treatment without wax that offers microporous protection against wood rot, fungi, decay and mould.
  • 2-3 coats
  • 6m² per litre
  • 12 hrs drying time
More info
Available in 1L, 5L
  4.9/5.0  (76)
An exterior water-based wood preservative for rough and smooth garden timbers available in 5 shades.
  • 2-3 coats
  • 5m² per litre
  • 4 hrs drying time
More info
Available in 5L
  5.0/5.0  (12)
A professional wood preserver for exterior use. Penetrates deep into wood and protects against wood destroying fungi.
  • 2-3 coats
  • 8m² per litre
  • 6 hrs drying time
More info
Available in 1L, 2.5L, 5L