NLL Guides · MATERIALS
Linseed oil paint, acrylic paint or traditional distemper for timber cladding – which is best?
Dorde Lalic founder and ownerLinkedInUpdated
Project photo from NLL Måleri's existing image archive.
The right paint for a timber façade depends on the cladding's condition, its previous treatment and the paint system suitable for the surface. Linseed oil paint, acrylic and distemper are different surface treatments. Do not choose solely by colour or a general promise of the longest life.
Which paint is best for a timber façade?
Choose a paint system intended for the existing timber surface and compatible with its current treatment. Start by identifying the surface before comparing paint tins.
Ask for a complete specification covering cleaning, pretreatment, priming and finishing coats. A well-known topcoat brand does not itself prove that the whole treatment suits the house. TräGuiden's overview of paints and timber protection explains why products and treatments need to be assessed as a system.
How do acrylic, alkyd oil, linseed oil and distemper differ?
Paint types differ in their binders and how they form a surface, among other things. These differences help you ask the right questions but do not replace product instructions for your surface.
| Paint type | Basic difference | Question before repainting |
|---|---|---|
| Linseed oil paint | Linseed oil is the binder | Has the existing coating been identified and is it suitable for further treatment? |
| Alkyd oil paint | Alkyd is a different binder from pure linseed oil | What preparation and system does the manufacturer specify? |
| Acrylic paint | Belongs to the group also known as latex paints | Is the product intended for the previously painted timber surface? |
| Distemper | Forms a different surface from film-forming paint systems | Are the timber surface and previous treatment suitable for the product? |
TräGuiden describes the properties and maintenance of distemper. Distemper should not be treated as a universal substitute for all other exterior paints.
How can you identify the paint already on your house?
Previous product names, invoices and work specifications are the best starting point for finding out what the house was painted with. Colour alone does not identify the paint type.
For example, a red house is not necessarily painted with distemper. Old surfaces may also contain several layers. TräGuiden notes that distinguishing paint types can be difficult and recommends expert assessment when uncertain in its repainting advice.
Photograph the façade and keep any information you find. State that the paint type is unknown if you do not know; otherwise an assumption may lead to an unsuitable work specification.
Can you paint one type over another?
A change of paint system must be assessed against the existing treatment and the manufacturer's instructions. There is no universal yes-or-no rule covering every combination of linseed oil, alkyd, acrylic and distemper.
Check what can remain, what must be removed and how exposed timber should be treated. Our guide to priming a façade covers questions to resolve before applying topcoats. Where paint is flaking, the cause of the existing coating's failure also needs assessing.
Which exterior paint lasts longest on timber?
Which exterior paint lasts longest on your house depends on the product, preparation, surface and exposure. Paint type alone therefore cannot give a reliable lifespan in years.
Ask for maintenance advice for the chosen system and distinguish an estimated maintenance interval from a written guarantee. Track changes on each side of the façade in a façade maintenance plan rather than waiting for a general age limit.
Is linseed oil or acrylic cheaper in the long run?
A comparison must cover preparation, painting materials, application and planned future maintenance for the same façade. The price of a tin alone does not show the project cost. Without this information, it is impossible to say which option will be cheapest for your house.
NLL's exterior wall painting is based on the actual surface and agreed scope. Use the exterior painting price guide to distinguish labour, materials and other project costs before comparing options.
