Building paper over treated timber

[xyzplasterer]

I've had to build out some window reveals with treated timber...I plan to stainless mesh them...is it necessary to use building paper before mesh? I've see it mentioned on here before...just wanted to check.

 

[S a plastering]

If your gonna do it you might aswell I just use the breathable roofing felt
Just nick that off t the roofers

 

[johniosaif]

Best to use it ,stops the timber from absorbing the water and leading to cracks

 

[Arti]

Breathable felt will be champion marra...............:RpS_thumbup:

 

[flynnyman]

whats wrong with plasterboard?

 

[xyzplasterer]

It's external!

 

[spunky]

I wouldn't for a few reveals **** that