Dips in flat roofs can be caused by rot. Make sure it's not rotten before you climb on it, or you may fall right through.
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9 years ago
Doing something about depression in flat garage roof.
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9 years ago
My garage has a very noticeable slope - it drops about a foot to a foot a half from front to back (standard sized single garage which will take an average car plus a freezer at the end). No fancy beamwork, just gradually lower as you go along it. Seems more sensible that way than messing about with tapering. Looks perfectly smooth when you walk on top of it, and no water collects anywhere. As for sloping it sideways, I think that would look a little odd.
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9 years ago
And is on a par with silicone as the most difficult stuff to remove from where you didn't intend to put it!
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9 years ago
Yup garages and sheds etc will often just go for joists on a slight angle and make one wall a bit higher to allow for the roof angle.
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9 years ago
Its probably worth a try. The only risk is that you will cause a leak in the roof deck covering if its not in good condition, or if you end up raising the edge of one of the deck boards thus creating a step in the level where the covering could break.
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9 years ago
I suspect it'll have better life expectancy without doing this. Felt isn't stretchy, and its winter. If you must do something, pond some bitumen up there then sprinkle sand on.
NT
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9 years ago
Ideas like that look fantastic if they are properly designed and installed, but a nightmare of enormous proportions if something goes wrong.
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9 years ago
A builder I knew was a great fan of them, although his were a simpler design using conventional bitumen/ felt as the substrate. As he remarked, putting insulation and gravel on top protected the felt from its greatest enemy - sunlight - and also removed the worse temperature excursions. He had installed dozens, some of which were 30 years old when I knew him and some even had Chamomile grown on top. He wasn't aware of any having failed.
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9 years ago
heh. It gets everywhere. Easy to wipe off some things when wet, but you'll never get it off clothes.
NT
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9 years ago
It took me an hour to pick frame sealant off my hand.