Posted by Jim on July 26, 2003 at 14:29:41:
In Reply to: Re: Detailing of Exterior Balcony over Enclosed Room Below posted by JWmHarmon on July 24, 2003 at 07:08:14:
I would recommend NOT placing any type of vertical support for the balcony deck upon the roofing below. Any such contact is bound to encourage leaks in future, since no surface or membrane is proof against eventual weathering and puncture. Better is to try to either canteliever the deck with beams from the house, or to put a cross beam under the deck and support it on columns that go down to below frost level on both sides of the room below. Columns can be made to harmonize with the house and encased if need be. Remember to pitch the deck slightly downward, of course, and to provide gutters at the outer edge to carry away water so that it doesn't spill upon the room below. Also, remember to include sufficient space between deck and roof to allow roofers to be able to work in there in future.
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