- Provide primary protection against climatic attack and they can also protect against some harmful biological agents.
- Penetrate the wood deep-down, protecting it and leaving the pores open.
- Emphasise and enhance the wood’s natural grain.
- Improve the adhesion and longevity of subsequent coats of paint/varnish.
- Control the exchange of moisture between the wood and the air.
- Easy to use.
- Do not peel.