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Preservatives/Treatments

Ensure exterior wood has the best protection with a preservative, before applying a finish coat on top. Some resinous and ingredient-rich woods require preserving treatment to help seal them for exterior use. We stock products for sealing knots (patent knotting) and for treating woodworm and dry rot.

Osmo recommends using Osmo WR Base Coat on Accoya, Kebony, Pine, Spruce, and Douglas Fir before applying Osmo UV-Protection Oil, for example. This gives extra protection against rot, insect attack, and blue stain, as well as extra water repellency.

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Osmo WR Base Coat

Osmo WR Base Coat, a wood preservative for amateur use against wood rotting fungi, wood staining fungi and wood destroying insects on all outside wood which is out of direct ground contact and/or surface water.Extremely water repellent - Resistant to blue stain, rot and insect attack Reduces wood swelling and shrinkage - No future...

Price £18.89 (ex. VAT)
In Stock and Available for Delivery

Osmo End Grain Sealing Wax

Osmo End Grain Sealing Wax, a special end grain sealer that protects against splitting due to weathering, especially suited for the end grains of decking, cladding or roof soffits made of hard and softwoods.Protects edge grain of decking against cracks and wood ingredients from bleeding Excellent coverage - 1 litre treats approx. 600...

Price £20.29 (ex. VAT)
In Stock and Available for Delivery

Coo-Var Patent Knotting

Coo-Var Patent Knotting is a low viscosity shellac based product. It is used on knotted or resinous areas of wood to help prevent staining of future paint films.For interior and exterior use Gloss finish

Price £11.53 (ex. VAT)
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Remmers Aqua IG-10 Impregnation Primer IT

Remmers Aqua IG-10 Impregnation Primer IT is a liquid, solvent-based wood preservative with preventive efficacy against blue stain, soft rot, insects and termites for use on exterior wood, including stable building elements (as a primer only) as well as those with limited to no dimensional stability, load-bearing elements under roofs, and for...

Price £33.87 (ex. VAT)
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Sikagard Wood Preserver

Sikagard Wood Preserver is a low solvent, low odour solution based on Micro-fine active technology. The fungicides and algaecides present in these formulations are finely dispersed so that wood penetration and hence effectiveness is much greater than standard wood preservation products. Ultra light fast pigments give an even fade resistant...

Price £102.78 (ex. VAT)
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Sikagard Universal 5 Star Wood Treatment

Sikagard Universal 5 Star Wood Treatment is an all-in-one treatment for wet rot, dry rot, fungi and wood boring insects - it takes care of all your wood treatment and preservation needs in the one can.Solvent and VOC free Internal and external use Micro emulsion provides deep and even penetration Rapid drying Non-flammable Virtually...

Price £118.68 (ex. VAT)
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Cromar Universal Dry Rot & Woodworm Killer+

Cromar Universal Dry Rot & Woodworm Killer+ is a wood preservative used for pre-treatment of non-resistant exterior wood. Contains active ingredients effective against wood-destroying fungi, wood-discolouring fungi (blue stain) and wood-boring insects. Protects construction timbers against attack by woodworm and gives fungal...

Price £79.35 (ex. VAT)
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OrganoWood Protection 01

OrganoWood Protection 01, a water-based, breathable, wood treatment product composed of silicon minerals and natural plant compounds. For surface treatment of absorbing wooden products such as solid wood, particleboard, MDF-board, plywood and Masonite board, protecting treated woods against rot-fungus and giving flame retardant properties....

Price £17.51 (ex. VAT)
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OrganoWood Repellent 02

OrganoWood Repellent 02 is a water-based wood treatment product developed to increase the superficial protection of wood against dirt, water and damp.Easily absorbed by untreated wood Composed of a water emulsion including organic silicon polymers and natural growth substances No toxic heavy metals or biocides For superficial treatment...

Price £17.65 (ex. VAT)
In Stock and Available for Delivery

Anker Stuy Hydrolux V-Joint Sealer

A waterborne acrylic dispersion based sealant that uses Anker Stuy Tri-cryl technology, is low in odour and contains no harmful solvents.Forms an easy to paint, flexible filler with excellent adhesion to bare wood and recommended Anker Stuy coatings systems Highly compatible with Hyrdrolux coatings and is UV-resistant Due to differences...

Price £14.93 (ex. VAT)
In Stock and Available for Delivery

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What is the difference between wood treatment and preserver?

Even the most rot-resistant wood species will eventually become vulnerable to decay due to exposure to the weather. Using a wood preserver will help protect exterior wood against degradation attacks. This includes woods used in areas prone to frequent damp from rain such as fences, window frames and doors, cladding, outdoor furniture, decking, and more.

Wood treatments stop attacks and further degradation including blue stain, rot, dry rot, and infestations from woodworms.