Do i have to use a breathable Damp Proof Membrane on timber?

[dunny1234]

I'm currently building a toilet/shower timber framed building on my campsite. I'm building the timber frame panels in a barn, so i've done the 4"x2" studs, roof and sole plates, 9mm OSB sheathing, and now i need to attach a DPM.

Does it need to be breathable? Obvoiusly, normal DPM is far cheaper than breathable DPM

Thanks in advance!

 

[geraint]

I'm currently building a toilet/shower timber framed building on my campsite. I'm building the timber frame panels in a barn, so i've done the 4"x2" studs, roof and sole plates, 9mm OSB sheathing, and now i need to attach a DPM.

Does it need to be breathable? Obvoiusly, normal DPM is far cheaper than breathable DPM

Thanks in advance!

there is no such thing as a breatherable damp course

 

[noseall]

I'm currently building a toilet/shower.... and now i need to attach a DPM......Does it need to be breathable? !

You would be crazy not to surely?

 

[^woody^]

If you can prove that the frame wont get any excess moisture so wont need to let it escape, then you wont need a breathable membrane

It's only £40 a roll, just put the pitch prices up next summer to get the money back

 

[freddiemercurystwin]

Aye especially if you expect the OSB shoite to survive.

 

[geraint]

I'm currently building a toilet/shower.... and now i need to attach a DPM......Does it need to be breathable? !

You would be crazy not to surely?

Surely.. If the damp was breath able then it is not a dpm...

more joe boys on here......

 

[noseall]

Modern sheathing and sarking membranes are designed to let vapour out but not let water in.

So we builders are told.

 

[dunny1234]

Breathable it is! Your faithfully tight arXe