UV stable external membranes?

[Alan Ambrose]

Anyone use these and have any recommendations? Our build is slowish and our LPA is properly difficult. Therefore I’m anticipating we’ll have the external roof and wall membranes on show for some time and therefore liable to UV. I can see stuff like Tyvek UV facade, but it still has only a 4-month UV life?

Edited January 18 by Alan Ambrose

[JohnMo]

Proctor Roofshield is supposed to be UV stable

[Alan Ambrose]

I'm finding that even the ones that claim to be UV-resistant have fairly woolly specs. UV Resistance ? 'Long Term' it says for POWERLON® UV Façade. Yeah, what does that mean?

 

Maybe someone who has gaps between their cladding has done the research?

Edited January 18 by Alan Ambrose

[Tosh]

https://www.dortechdirect.co.uk/faceshield-uv-membrane-1-5m-x-50m.html?srsltid=AfmBOoqoEF0dakba4-g2N6bQWWJldFY0_x-xl9EHV3bDlDYYmAein1TV

 

We were going to do open screen but decided against it in the end. This stuff any good? 12mths fully uncovered according to the data sheet.

[Alan Ambrose]

As usual, I've got into this in an 'over-enthusiastic' manner...

 

I see some membranes with fire ratings of A1, A2 (OK for high rises), B1 (does burn a bit) or none (you can bet it burns). 

I see some with UV ratings of from 3 to 12 months (or none at all).

I see water penetration of W1 (just doesn't) and W2 (leaks a bit).

Some at 2 quid / m^2, some 8x that.

 

Question is: how much do we care? how much does BC care? I'm thinking all re clad timber frame, of course.

[Nickfromwales]

2 hours ago, Alan Ambrose said:

As usual, I've got into this in an 'over-enthusiastic' manner...

 

I see some membranes with fire ratings of A1, A2 (OK for high rises), B1 (does burn a bit) or none (you can bet it burns). 

I see some with UV ratings of from 3 to 12 months (or none at all).

I see water penetration of W1 (just doesn't) and W2 (leaks a bit).

Some at 2 quid / m^2, some 8x that.

 

Question is: how much do we care? how much does BC care? I'm thinking all re clad timber frame, of course.

Cover the expensive membrane with cheap visqueen and dispose of it later. Zero UV getting through that.