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Osmo Wood Oils (exterior)

Protect and enhance your outdoor wood finishes with Osmo exterior oils from our store. These premium, eco-friendly oils shield against UV rays, moisture, and mildew while highlighting the wood's natural beauty. Ideal for decking, fences, and furniture, ensuring long-lasting durability.

8 products


  • Osmo UV-Protection Oil Tints

    Osmo UV-Protection Oil Tints

    61 in stock

    Please Note: Colours were developed to appear in harmony with their respective wood species e.g. 426 Larch for Larch wood projects. The wood’s natural colour and character will influence the final result. Plus, the darker the colour, the stronger the UV-resistance. Please always trial apply! All exterior woods grey into a patina colour over time, however UV-Protection Oil Tints have been developed to maintain the wood's natural colour with the use of pigments to optimally match the wood's natural characteristics. Ideal for windows, doors, cladding, fencing and other vertically structured joinery (not recommended for flat surfaces such as decking). Natural oil-based and microporous finish does not crack, flake, peel or blister. Water and dirt resistant, moisture regulating and reduces wood swelling and shrinkage. Osmo 425 Oak UV Protection Oil gives optimal protection from the sun, similar to Osmo 420 but it improves the UV resistance further by also having a small amount of Oak pigment. The oak pigment will darken the wood slightly and accentuate the wood grain but we recommend ALWAYS do a test before application, sample sachet available. For exterior use only. Especially recommended for vertical surfaces such as timber cladding, windows and doors Prolongs the renovation time significantly when used as a top coat for staining wood Contains active ingredients for the preventative protection against algae and fungal decay. Key features Coverage (m2) per Litre: 18 Base: Solvent Paint Application: Brush, Roller Suitable Substrate: Exterior Woodwork, Window Frames, Doors Exterior: Exterior Drying Time: 12 Hours PREPARATION Wood surface must be clean, dry and frost-free (moisture content max. 20%). UV-Protection-Oil Tints is ready to use. Do not thin. Stir well using a flat stirring stick or spatula before use. Ideally, surfaces are sanded no finer than a P120 grit grade of sand paper. Sanding to finer grades will reduce required absorbency.If possible, and if the wood is absorbent, please apply first coat to all sides before installation. Fresh wood containing natural wood ingredients /extractives (eg:  Cedar, Teak, Mahogany or Iroko) are often less absorbent and need to weather off first before applying the product. Please refer to website ‘Suitability’ section for more details. Weathering helps ingredient rich wood become more absorbent and the wood finish adheres optimally. For renovation works, clean old microporous stains thoroughly – if necessary sand lightly. Clean and restore already greyed or weathered wood at the same time with Osmo Wood Reviver Power-Gel. Old paints and lacquers must be completely removed. As a general rule, wear a dust mask during sanding works. To maintain absorbency, avoid sanding surfaces finer than a P120 grit. Weather ingredient rich wood after sanding.The finished surface is influenced by several factors, including the condition of the wood. Therefore, a trial application is always required, especially for unfamiliar surfaces. Soft wood species like Pine or Spruce are more prone to blue stain, rot and insects. If desired, pre-treat these soft woods if possible on all sides with Osmo WR Base Coat. APPLICATION With Osmo Flat Brush or Osmo Microfibre Roller, apply thinly along the wood grain and spread well.Allow to dry for approx. 12 hours under good ventilation.Then apply the second coat.Alternatively the second coat can also be carried out with UV-Protection-Oil Extra Clear.When recoating colour treated surfaces, or for renovation works, one coat applied to the clean and dry surface is usually sufficient.

    61 in stock

    £3.99 - £88.48

  • Osmo Natural Oil Woodstain - Wiltshire Wood Flooring Supplies

    Osmo Natural Oil Woodstain

    1 in stock

    Osmo Natural Oil Woodstain is perfect for all exterior woods, including doors, windows & windowsills, carports, timber cladding, balcony, wooden decking, screens & smooth fences, pergolas, summer houses and garden furniture.Base and top coat in one finish. Key Features Fast Drying Natural wood grain remains visible Extremely weather and UV resistant Very water and dirt resistant Resistant against algae, mould, mildew and fungal attack Reduce wood swelling and shrinkage Microporous, breathable finish which does not crack, peel or flake  No sanding necessary for future applications  Application  SURFACE PREPARATION Wood surface must be clean, dry and frost-free (moisture content max. 20%).Osmo Natural Oil Woodstain is ready to use. Do not thin. Stir well before use.If possible, please apply the first coat to all sides before installation.Clean old microporous stains thoroughly. Old paints and lacquers must be completely removed. As a general rule, wear a dust mask during sanding works.The finished surface is influenced by several factors, including the condition of the wood. Therefore, a trial application is always required, especially for unfamiliar surfaces.If additional protection against blue stain, rot and insects is desired, pre-treat the wood if possible on all sides with Osmo WR Base Coat. METHOD OF APPLICATION With Osmo Flat Brush or Osmo Microfibre Roller, apply thinly along the wood grain and spread well.Allow to dry for approx. 4-6 hours under good ventilation. Then apply a second coat.For renovation works, one coat applied to the clean and dry surface is usually sufficient. NOTE Transparent colours are influenced by the natural colour of the wood and therefore they may deviate from the sample colours. Light transparent colour tones offer only limited UV protection; therefore they are not recommended for surfaces exposed to strong sunlight. Dried surface is at first satin-glossy and then satin. To extend the life of the coating, it is recommended to apply one final top coat of Osmo UV Protection Oil Extra 420 Clear after thoroughly drying (not recommended for White 900). Many wood species contain water-soluble coloured extractives which may leach out naturally when weathered. All colour tones can be mixed with each other.Starting from 2.5 litres per colour tone, available in 186 RAL Classic and 1950 NCS colour tones.Transparent finishes allow the substrate to shine through. Depending on the wood species, the appearance of the colour tone may deviate from the original RAL/NCS colour tone.Osmo Natural Oil Woodstain is furnished with biocides and therefore it is only to be used in outdoor areas.The added active ingredients delay or minimise the risk of algae and fungal attack. For effective protection, two coats are to be carried out. In accordance with the latest technical research, permanent protection against algae and fungal attack cannot be provided. Using power washers will severely decrease the coverage of the finish and general or multi-purpose cleaners will increase the frequency of maintenance and recoating. CARE Regular Cleaning: Damp cleaning with Osmo Decking Cleaner using Osmo Decking Cleaning Brush. Occasional Maintenance: If necessary, intensive cleaning and refreshing using Osmo Wood Reviver Power Gel or Osmo Gard Clean. Recoating: Simply re-apply one coat onto the clean and dry surface when signs of wear become visible.

    1 in stock

    £86.78

  • Osmo UV-Protection Oil 410 - Wiltshire Wood Flooring Supplies

    Osmo UV-Protection Oil 410

    22 in stock

    Osmo UV-Protection-Oil is ideal for all vertical exterior wood surfaces: doors, windows, window shutters (dimensionally stable elements), carports, timber cladding, balconies, fences, pergolas, and summer houses (dimensionally unstable elements).

    22 in stock

    £27.29 - £79.56

  • Osmo UV-Protection Oil Extra 420 - Wiltshire Wood Flooring Supplies

    Osmo UV-Protection Oil Extra 420

    22 in stock

    Osmo UV-Protection-Oil Extra is a satin, clear finish for exterior. It is based on natural oils, is microporous, and does not crack, flake, peel or blister. When used as a final finish after staining wood, Osmo UV-Protection-Oil Extra prolongs the renovation time significantly. As a stand alone finish, with two coats, it prolongs the greying process on vertical surfaces by UV-Protection factor 12 in comparison to untreated wood. The finish contains active ingredients which protect it from mould, algae and fungal attack. Easy to renew, no sanding or primer necessary. Easy to apply, will not dry during application.

    22 in stock

    £27.29 - £79.56

  • Osmo Decking Oil

    Osmo Decking Oil

    85 in stock

    Osmo Decking-Oils protect and maintain timber decking, garden furniture and privacy screens made of numerous coniferous and fine woods, such as pressure impregnated Pine, Douglas Fir, Cedar, Oak or Bangkirai also suitable as a transparent colour treatment of Teak, Eucalyptus and other fine woods as well as thermally treated wood. Key Features  Approx. coverage: 24m²/L with one coat No. of coats: 2 Ideal application temperature: +10°C to 35°C Drying time: 12 hrs Sizes: 0.125L, 0.750L, 2.5L  

    85 in stock

    £3.99 - £82.07

  • Osmo WR Base Coat Clear (4001) - Wiltshire Wood Flooring Supplies

    Osmo WR Base Coat Clear (4001)

    9 in stock

    Osmo 4001 WR Base Coat is a clear wood impregnation for exterior use. It is a preventive preservative with active ingredients to protect against plant and animal pests such as blue stain, rot, mildew and insect attack. Nb. 4001 is the replacement for 4005 with the key differences that it is now oil based and contains protection against insect attack as well as biocides. The base coat penetrates easily and deeply into the wood - proving extra moisture protection for the wood. Key features include: Clear (4001), exterior base coat only Especially recommended for windows, cladding, garden furniture Reduces swelling and shrinkage and protects against fungal, algae, blue stain, mould growth & insect attack. Extremely water-repellent, extra moisture protection Ideal primer for Natural Oil Woodstain, Natural Oil Woodstain Effects and UV Protection Oil Will improve the coverage of the above when used on rough sawn timber Available in 0.125, 0.75 and 2.5 litres 1 litre covers approx 5 - 6 m² with 1 coat. Product coverage will depend significantly on the wood's characteristics. These figures are for smooth planed or cut timber. Other surfaces such as rough sawn, aged timber etc may lead to significantly reduced coverage. Number of coats:1 coat, a top coat from the Osmo product range must follow.Application:Apply by brush, dipping or flooding, spray only in an enclosed unit with appropriate protective equipment.Drying:Approximately 12 hours in normal climatic conditions (23°C & 50% relative humidity). Lower temperatures and/or higher humidity can increase the drying time. Allow good ventialtion when drying.Storage:Up to 5 years or more if the can is kept dry and sealed tightly. Store away from direct sunlight and extremes of temperature.

    9 in stock

    £20.61 - £57.46

  • Osmo End Grain Sealing Wax Clear 375ml (5735)

    Osmo End Grain Sealing Wax Clear 375ml (5735)

    5 in stock

    Osmo End Grain sealer protects the ends of decking and other wood types. Ideal for interior and exterior use as it has excellent weather, water and dirt resistance which minimises swelling and shrinkage whilst protecting against cracks and preventing bleeding. This clear sealer has a microporous formulation which gives a breathable finish that does not peel, flake or crack. Safe for human, animal and plant once dry.   Key Features Protects edge grain of decking against cracks Prevents wood ingredients from bleeding High weather resistance Safe for human, animal and plant once dry Very water and dirt resistant Minimises wood swelling and shrinkage Microporous, breathable finish which does not crack, peel or flake Suitable for interior and exterior use   Application  SURFACE PREPARATION Wood surface must be clean, dry and frost-free (moisture content max. 20%).Osmo End Grain Sealing Wax is ready to use. Do not thin. Stir well.The finished surface is influenced by several factors, including the condition of wood. Therefore, a trial application is always required, especially for unfamiliar surfaces. METHOD OF APPLICATION With Osmo Flat Brush, apply generously to end grains.To achieve an optimal protection for strongly absorbing end grains, we recommend applying the sealing wax two times wet-in-wet or after drying carry out a second coat. NOTE Osmo End Grain Sealing Wax is clear and therefore it can be applied universally.Please only apply to end grains. Not for area treatment. Wipe away any excess wax from other surfaces with a cloth.Oils enhance the natural tone of wood (permanent wet effect). After drying, we recommend coating the other wood surfaces with Osmo wood finishes (e.g. Bangkirai-Oil, Massaranduba-Oil, Country Colour or Natural Oil Woodstain). Using power washers will severely decrease the coverage of the finish and general or multi-purpose cleaners will increase the frequency of maintenance and recoating. OVERVIEW Osmo End Grain Sealing Wax protects the end grain from cracks during all elements of weathering. Minimises the water absorption, as well as the seasoning of the end grains. The surface is water and dirt resistant. Swelling and shrinking as well as ‘bleeding’ of the contents of the wood will be reduced. It is clear and is therefore universally applicable.

    5 in stock

    £20.31

  • Osmo Garden Furniture Oil Clear Satin 028 1 Litre - Wiltshire Wood Flooring Supplies

    Osmo Garden Furniture Oil Clear Satin 028 1 Litre

    6 in stock

    Clear oil-based wood stain for all wood in outdoor areas. Microporous stain allows the wood to breathe and reduces swelling and shrinkage. Water-repellent, extremely weatherproof and UV-stable. Will not crack, peel, flake or blister. Simply recoat without sanding or primer. Easy and seamless application. Wood stain stays workable while coating. Easy and seamless application Improves and maintains the appearance of wood Suitable for both hardwoods and softwoods Exceptionally high coverage Woodstain stays workable while coating Safe for humans, animals and plants once dry (biocide free) Highly water and dirt resistant Microporous, penetrating finish which does not crack, peel or flake No sanding necessary when topping up coating SURFACE PREPARATION Wood species with a high content of natural wood extractives need to weather off (min. 4 weeks) before the initial treatment or be cleaned with Osmo Brush Cleaner and Thinner (degreaser). Resinous wood, such as Larch or Douglas Fir, needs to weather off for at least 6 weeks. Pressure-impregnated wood, Massaranduba,Bangkirai or Garapa need to weather off for at least 3 months. De-grey any already greyed wood with Osmo Wood Reviver Power-Gel before applying Osmo Garden Furniture Oil. Wood surface must be clean, dry and frost-free (moisture content max. 20%). Osmo Garden Furniture Oil is ready to use. Do not thin. Stir well before use. Thoroughly clean or lightly sand old microporous stains or completely remove old varnishes before application. Always wear a dust mask while sanding. If possible, please apply the first coat to all sides before installation. If additional protection against blue stain, rot and insect attack is desired, pre-treat the wood, if possible on all sides, with Osmo WR Impregnation. The finished surface is influenced by several factors, including the condition of the wood. Therefore, a trial application is always required, especially for unfamiliar surfaces. METHOD OF APPLICATION With a stiff brush (Osmo Flat Brush) or a lint free cloth, apply thinly and evenly to the clean and dry wood surface. Always work with wood grain. Apply thinly and evenly. Ventilate well while drying. Then apply the second coat – also thinly. NOTE Osmo Garden Furniture Oil is clear; therefore it offers no UV protection (greying). Due to their surface properties, ribbed or rough saw wood surfaces absorb more product. Many wood species contain water-soluble coloured extractives which may leach out naturally when weathered. CARE Regular Cleaning: Damp cleaning with Osmo Decking Cleaner using Osmo Decking Cleaning Brush. Occasional Maintenance: If necessary, intensive cleaning and refreshing using Osmo Wood Reviver Power Gel or Osmo Gard Clean ( for green growth) . Recoating: Simply re-apply one coat onto the clean and dry surface when signs of wear become visible.

    6 in stock

    £28.82

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