Modified Bitumen installation question.

[Brandon Whitmore]

Are there any manufacturers that allow the installation of granular coated modified bitumen roofing to be installed vertically (parallel to the rake) instead of horizontally (parallel to the eave)?

[msteger]

I would imagine no as this would make it more prone for leakage at the seams, eh?

[Erik]

http://www.gaf.com/Content/Documents/6008.pdf depends on the slope.

[Brandon Whitmore]

Ahh. Thanks Erik

So it looks like over 1/2" per foot, they require that it be installed perpendicular to the ridge-- good to know.

Now I'll have to find out if that applies to torch down, or just cold applied methods.

[Erik]

http://www.certainteed.com/resources/Fl ... Manual.pdf

[Brandon Whitmore]

Erik,

I owe you one, oh, make that 2.

Certainteed's directions were one of the sets I read. Don't ask me how I skipped right over the important part I was looking for. I think I'm slipping.

Thanks.