Osmo 4001 Wr Base Coat

Your price

Estimated dispatch 08/12/2023

Osmo WR Base Coat is a clear wood impregnation liquid that prevents vegetable pests, blue stain and mildew for use in an external application only. Only one coat of this unique combination of oil and water, that reduces timber swelling and shrinking, is required prior to a protective topcoat.

As the name suggests, this is a base coat, not a finishing treatment. To ensure longstanding beauty and achieve full protection of the wood, surfaces must be treated with an appropriate Osmo external wood finish.

  • Approx coverage 3.75m² for 0.75l & 12.5m² for 2.5l


Uses: Cladding, External

Customer Reviews

2 Reviews

Great product.

by Carolyn141153 (08/30/2021)

I have purchased this product previously from yourselves. I’m really pleased with the look and longevity of the product. My only criticism is that you don’t do a larger tin.

Ease of use, looks great

by Carolyn141153 (06/16/2020)

Really good, easy to apply. Looks great even with just the base coat on. My only complaint is that the tins aren’t bigger.

Delivery Information

  • Express delivery on all orders once machined.
  • Click & Collect is available from our Falmouth store.
  • All orders are expertly packed to ensure against damages.
  • Delivery costs will be automatically calculated using the weight, size and delivery location of your order so delivery rates will vary. 

Palletised Delivery Information

  • Due to the size and weight of goods, some items will be sent via a roadside palletised delivery.
  • We will contact you prior to dispatch to arrange a convenient weekday delivery.
  • If a large curtain-sided lorry (the size of a double-decker bus) is unable to access/vacate your premises or pull-up outside the property (restricted access) your pallet may be sent on a ‘Book-In’ service, which means your local depot will contact you and arrange a date and suitable delivery transport with you. Your local delivery depot will call the next working day after dispatch to book the delivery with you for delivery within 5 working days.
  • If a large curtain-sided lorry (the size of a double-decker bus) is able to access your premises and pull up outside the property, your pallet can be delivered on the next weekday suitable for you. Please let us know by 11:00 am the day before, so that we can dispatch in time. 
  • Please be aware, if a forklift is unavailable at the delivery address (e.g. a residential address) people will be required to unload from the pallet by hand. This is for the health and safety of the delivery driver.

  • We use a third-party courier service who have a strict policy on abuse or harassment towards their drivers. In any case where there is abuse or harassment, the driver is within their rights to refuse delivery.

  • It is your responsibility to dispose of all packaging and pallets, this is for the health and safety of the delivery driver.

Please download Pallettrack's Home Delivery guide for more information on their roadside delivery service.



  • If you wish to arrange a collection with a courier of your choice then we are more than happy to package the goods for you. Please email us your full cutting list for specific prices and estimated weight and dimensions.
  • Contactless collection is an option for any order. Our collections take place at our workshop in Falmouth, Cornwall between the hours of 9 am-4 pm any weekday excluding bank holidays.
  • We will contact you once the goods are ready to collect, so a convenient timeslot can be arranged. 

Returns should be sent to the following address:

Sprucewool Ltd 
Bickland Business Centre
Tregoniggie Industrial Estate
Bickland Water Road
TR11 4SN

Please see our full returns policy in our terms of supply document (Clause 9)