exterior joinery.

[clive griffiths]

I need a wood treatment for some exterior work, the customer then wants to paint it.
Any advice please.
Clive.

 

[Woody2Shoes]

Spirit-based, clear preservative works for me - the only slight trick can be remembering which bits you've done and which you haven't, because it's clear.

Something like this:
https://www.toolstation.com/wood-protective-treatment-5l/p68513

 

[accipiter]

I've used the above treatment - quite a lot of it - recommended by @Woody2Shoes and found it good. Agree that it's a bit of an issue knowing where you've treated because it's clear but, when aplied, you can just about see the "wet" bits.

 

[deema]

I’d supply it bare with the provision that the customer is to finish. Anything else opens you up to a potential claim that your pretreatment wasn’t compatible with the subsequent finish. The nightmare world we live in.

 

[johnnyb]

I've had good success with water based preservatives. shake very well as they are an emulsion. allow to dry properly before painting. £22 for 5l sika from screwfix. these days I avoid solvents amap.