ice and water shiled under metal roof

meghan114 · 03-16-2010, 12:07 AM

I want to get a metal roof on my house. I have gotten several estimates, 3 include ice and water shield. I am wondering if I need ice and water shield. I live in SC, so we don't get ice. I do have a low pitched roof though, which is why I was told that I needed ice and water shield under my metal roof. Whats your thoughts?

Tom Struble · 03-16-2010, 12:14 AM

if it is the type of metal roof that has exposed screws i would definitely use a i&w type membrane,just make sure the installer uses one that can be used under metal roofing

meghan114 · 03-16-2010, 12:18 AM

why does the exposed screws matter, thats where i got confused. what will ice and water shield do for those?

Tom Struble · 03-16-2010, 12:43 AM

because its just a matter of time before expansion and contraction is going to elongate the screw holes allowing water to get under the metal

the I&W will at least help keep it out of the house for awhile

imo your better off using a concealed fastener standing seam roof on a house and leave the exposed fastener metal roof on the barn where it belongs

tinner666 · 03-16-2010, 07:13 AM

A properly done standing seam roof has no need for underlay of any kind.
http://www.albertsroofing.com/Tin%20...to_gallery.htm

The exposed fastener type will allow water in around the screws.

03-16-2010, 12:07 AM	#1
meghan114 Newbie Join Date: Mar 2010 Posts: 2	ice and water shiled under metal roof I want to get a metal roof on my house. I have gotten several estimates, 3 include ice and water shield. I am wondering if I need ice and water shield. I live in SC, so we don't get ice. I do have a low pitched roof though, which is why I was told that I needed ice and water shield under my metal roof. Whats your thoughts?

03-16-2010, 12:14 AM	#2
Tom Struble Member Join Date: Dec 2008 Location: west milford n.j. Posts: 2,692	ice and water shiled under metal roof if it is the type of metal roof that has exposed screws i would definitely use a i&w type membrane,just make sure the installer uses one that can be used under metal roofing

03-16-2010, 12:18 AM	#3
meghan114 Newbie Join Date: Mar 2010 Posts: 2	ice and water shiled under metal roof why does the exposed screws matter, thats where i got confused. what will ice and water shield do for those?

03-16-2010, 12:43 AM	#4
Tom Struble Member Join Date: Dec 2008 Location: west milford n.j. Posts: 2,692	ice and water shiled under metal roof because its just a matter of time before expansion and contraction is going to elongate the screw holes allowing water to get under the metal the I&W will at least help keep it out of the house for awhile imo your better off using a concealed fastener standing seam roof on a house and leave the exposed fastener metal roof on the barn where it belongs

03-16-2010, 07:13 AM	#5
tinner666 Pro Slate Roofer Join Date: Mar 2005 Location: Richmond, Va. Posts: 1,426	ice and water shiled under metal roof A properly done standing seam roof has no need for underlay of any kind. http://www.albertsroofing.com/Tin%20...to_gallery.htm The exposed fastener type will allow water in around the screws. __________________ Frank To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

ice and water shiled under metal roof