
Osmo WR Base Undercoat 4001 Clear 2.5L
Hazard informationDangerHealth hazard (GHS08), Environment (GHS09)
Hazard information
Signal word: Danger
Hazard pictograms: Health hazard (GHS08), Environment (GHS09)
- H304: May be fatal if swallowed and enters airways.
- H410: Very toxic to aquatic life with long lasting effects.
Supplemental label information:
- EUH208: Contains 3-iodo-2-propynylbutylcarbamate. May produce an allergic reaction.
- EUH066: Repeated exposure may cause skin dryness or cracking.
- Contains biocidal products: 3-iodo-2-propynylbutylcarbamate, permethrin (ISO).
Contains: aliphatic hydrocarbons, C10-C13
Read the label and the Safety Data Sheet before use. The SDS is in the Datasheets section on this page. Hazard information taken from the manufacturer's Safety Data Sheet, revision 22.07.2021.
EVEN MORE PROTECTION
- Extremely water repellent
- Resistant to blue stain, rot and insect attack
- Reduces wood swelling and shrinkage
- No future application necessary
METHOD OF APPLICATION
Apply by (brush or roller) spreading out thinly and evenly along wood texture. Number of coats required: 2-3, depending on wood species and surface characteristics. Coat the clean, dry and frost-free wood generously – if possible on all sides. The product should be applied evenly in order to get best results. Processing temperature: 10 – 30°C.NOTE
Osmo WR Base Coat is not to be used alone, instead it is a clear impregnation to protect wood against rot, blue stain and insect attack. Compatible with all common types of glue and putty (except silicone products). We recommend galvanized, anti-corrosive fasteners. To guarantee full protection (against UV rays) and the long-lasting beauty of wood, a top coat (e.g. with One Coat Only HSPlus, Natural Oil Woodstain, Country Colour, Opaque White Gloss or UV-Protection-Oil) is required after the impregnation has completely dried. If the coloured surface should have an external surface protection (film protection), we recommend for non-biocidal wood finishes (One Coat Only HSPlus and Country Colour) a top coat with UV-Protection-Oil Extra.* *Do not coat white finished surfaces with UV-Protection-Oil Extra. 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.
Ireland & Northern Ireland — 1–3 working days. Charged by total order weight, VAT included:
- Up to 30 kg — €6.99, or free on orders over €85
- 30–60 kg — €13.99
- 60–100 kg — €27.99
- Over 100 kg — pallet delivery €49.99
Great Britain — 2–4 working days. €13.95 up to 30 kg, then €27.90, €55.90 and €99.90 by the same weight steps. There is no free delivery to Great Britain.
Rest of Europe — non-liquid items only, from €11.75, priced by destination and weight at checkout. Paint and other liquids ship to Ireland, Northern Ireland and Great Britain only.
Dispatch and collection — in-stock orders placed before 12pm Monday to Friday ship the same day. Click & collect at Ballymount, Dublin 12 is free and often ready within the hour.
Returns — 14 days to change your mind and 14 more to send it back. Tinted paint is non-returnable once mixed.




