Breather membrane on timber frame

[geraldthehamster]

I want to fit a breather membrane on OSB sheathing on a timber frame, under battens and timber cladding - is there any difference between the expensive house wrap stuff such as Tyvek, and a less expensive roofing membrane, such as Cromar Vent 3? Is any breathable membrane suitable?

Cheers
Richard

 

[^woody^]

There are differences, as some membranes rely on an air gap under the membrane for it to work.

The manufacturer will state if it is suitable for wrapping a frame.