Breather felt sag

23vc · 24 Sep 2017

Hi
I felted some of my extension roof today and being a first timer didn't quite make as good a job as I'd hoped, the sag between rafters is more like 30-40mm in places rather than the recommended 10mm. Is this a problem? I can redo it if it is
Cheers
John

datarebal · 24 Sep 2017

its better than no sag

^woody^ · 24 Sep 2017

I don't think I've ever let the membrane sag. It doesn't look right. Likewise, I don't think any inspectors have actually cared.

Btw, they don't print those lines on for nothing you know. Lol.

23vc · 24 Sep 2017

^woody^ said:
Btw, they don't print those lines on for nothing you know. Lol.

Yep, it looks crap. But it was the first time I've ever done it and it ain't coming off now, especially as you two have ok'd it (kind of)

By the 3rd course I got the hang of it

datarebal · 24 Sep 2017

unless a roof is counter battened then its correct practice to allow a sag of 10 mm minimum

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Breather felt sag

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