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Wood Impregnations and Treatments

Wood impregnations and treatments are essential for preserving and enhancing the durability of wooden structures and surfaces. Whether used for stained wood, outdoor decking, structural timbers, or garden furniture, these treatments offer robust protection against rot, insects, moisture, and decay. By deeply penetrating the wood fibres, they form a long-lasting barrier that maintains the wood's integrity even in harsh conditions.

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Cromar Wood Treatment | Decorative Exterior Stain

Cromar Wood Treatment

Cromar Wood Treatment is a decorative wood treatment for professionals and private end-users for exterior use e.g. facades, carports, shutters and balcony railings. For use on sheds, fences and garden furniture. Should not be used indoors The stain penetrates wood easily and thereby gets into inner layers. Protects wood to a certain...

Price £72.50 (incl. VAT)
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Cromar AlphaChem 3in1 Wood Preserver | Wood preservative for the treatment of outdoor timber

Cromar AlphaChem 3in1 Wood Preserver

This product is temporarily unavailable; please contact our technical team on 0113 2455450 (option 2) or send a message to [email protected] where we will be happy to find an alternative product. Cromar AlphaChem 3in1 Wood Preserver is a solvent-based wood preservative for the treatment of exterior timber, containing active...

Price £18.88 (incl. VAT)
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Sikagard Universal 5 Star Wood Treatment

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 £29.34 (incl. VAT)
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Sikagard Wood Preserver

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 £27.36 (incl. VAT)
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Woodworm Treatment: Sikagard Woodworm Killer

Sikagard Woodworm Killer

Sikagard Woodworm Killer is a ready to use woodworm treatment for the eradication of all types and life stages of wood boring insects and their larvae, specifically woodworm. It is a low solvent; low odour solution based on Micro-fine active technology with added insecticide to penetrate deep into the wood to actively kill and protect against...

Price £91.39 (incl. VAT)
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Mona-Guard WD - Clear

Hydron Mona-Guard WD - Clear

Mona-Guard WD-Clear is a unique product based upon hydrophobic and oleophobic chemistry that impregnates the fibres to provide a clear, invisible protection to bare and renovated wood. Enhances durability and water repellence as well as resistance to oil penetration, dirt, stains and more with up to 10 years product performance For use...

Price £131.64 (incl. VAT)
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Cromar Creotreat | Exterior Timber Treatment & Oil

Cromar Creotreat

Cromar Creotreat is an oil based timber treatment and stain for outside use on fences, sheds and timber posts. Untreated timber requires no special treatment Use stiff brush and apply to dry surfaces Good coverage, approx 1-4m2 per litre per coat

Price £49.64 (incl. VAT)
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Osmo Wood Protector | Ideal For Wet Interiors & Exteriors

Osmo Wood Protector

Osmo Wood Protector is suitable for all interior wood, such as wooden flooring made of wood species susceptible to blue stain (e.g. Pine), window frames and wood in baths, and outdoor areas, for which an absolutely ecological, biocide-free impregnation is desired, such as playground equipment and sandboxes. Especially for wood in moist...

Price £23.45 (incl. VAT)
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Cromar Universal Dry Rot & Woodworm Killer+ | Exterior wood protection

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 £129.01 (incl. VAT)
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OrganoWood Repellent 02 | Dirt & Water Protection For Exterior Wood

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 £18.54 (incl. VAT)
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Tikkurila Pinjalac Edge Cover

Tikkurila Pinjalac Edge Cover

Tikkurila Pinjalac Edge Cover is a water-borne, fast drying, flexible sealer lacquer for windows, doors and other wooden surfaces outdoors. For sealing the end grain parts of the wood and hdf-board thus preventing water and humidity to penetrate into the wood Decreases cracking of wood surface Recommended to apply directly to the wood...

Price £19.02 (incl. VAT)
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Owatrol Seasonite New Wood Protection

Owatrol Seasonite New Wood Protection

Protects new wood in its vulnerable first year, from the damaging effects of sun and moisture. Stabilises new exterior wood, during the first year of weathering. Ideal for pressure treated wood, softwoods - Cedar, Pine, Douglas Fir etc, hardwoods - Ash, Beech, Birch etc and kiln dried timbers. Horizontal and vertical surfaces such as new...

Price £28.03 (incl. VAT)
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OrganoWood Protection 01 | Exterior Wood Rot & Flame Protection

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 £18.38 (incl. VAT)
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Osmo WR Base Coat | Exterior Wood Preservative

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 £18.91 (incl. VAT)
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Wood Impregnations and Treatments: Protect and Preserve Timber


Wood impregnations and treatments are used across a variety of settings to maintain the appearance and structural integrity of timber. Common applications include garden furniture, outdoor decking, fence panels, structural beams, and interior woodwork. In heritage projects, treatments help restore and protect historical timber features, or our range of wood finishes.

The primary benefits of using wood treatments include enhanced resistance to moisture, fungal decay and insect damage. Anti-fungal products help maintain hygiene in damp environments. Water-repellent treatments reduce the risk of swelling and warping, particularly in outdoor applications.

Wood Treatment FAQs


Can wood treatments be used on both indoor and outdoor wood?

Yes, different formulations are available for interior and exterior use, offering protection against specific environmental challenges.

How often should I reapply wood treatments?

Reapplication intervals vary by product and exposure conditions, but most outdoor treatments are recommended every 1-3 years.

Do wood treatments protect against insects?

Yes, many wood impregnations contain insecticides to prevent woodworm and other pests, keeping the timber structurally sound.