Deck Roof
#1
04-09-08, 11:41 AM
Deck Roof
I want to add a roof to my 12x20 deck. The 20 ft. dimension runs parallel to the house wall. My house is a ranch style with 20 inch wide soffits.
I want to build a lean-to type roof over the deck with the house side resting on top of the existing roof. I do not have enough vertical clearance to attach it to the fascia. I would use rafters, 1x4 slats perpendicular to the rafters, and metal roofing panels on the slats.
My question is: How do I attach the rafters to the existing roof without causing the existing roof to leak?
I want to build a lean-to type roof over the deck with the house side resting on top of the existing roof. I do not have enough vertical clearance to attach it to the fascia. I would use rafters, 1x4 slats perpendicular to the rafters, and metal roofing panels on the slats.
My question is: How do I attach the rafters to the existing roof without causing the existing roof to leak?
#2
04-09-08, 06:16 PM
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For a DIY project, it could be very complicated. You would have to tie the 2 roofs together with a 'break' flashing. If the house roof is low sloped, you almost doomed to failure.
I assume you know how to install the lower header to accept the rafters. Why not have the same system on the upper, house side? And lett he rafters extend a foot over the house roof? And left the house gutter continue to collect the water from the main roof?
I assume you know how to install the lower header to accept the rafters. Why not have the same system on the upper, house side? And lett he rafters extend a foot over the house roof? And left the house gutter continue to collect the water from the main roof?
#3
04-10-08, 02:28 PM
Deck Roof
Thanks, Tinner. I agree with you. I am going to add 3 posts next to the house and make it a free-standing roof system.
What would be the minumum slope for a metal roof?
What would be the minumum slope for a metal roof?
#5
04-10-08, 03:38 PM
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My reply was based on this comment, "I do not have enough vertical clearance to attach it to the fascia. "
1/12 min slope. Go for more if you can. You can raise it as far over the existing as you want. 1',2'. The higher you raise it, you would want to extend it farther over the existing to help keep windblow rain to a minimum.
1/12 min slope. Go for more if you can. You can raise it as far over the existing as you want. 1',2'. The higher you raise it, you would want to extend it farther over the existing to help keep windblow rain to a minimum.
