If it was really flat, and I was a really good carpenter (which I'm not),
I'd rip it off and redesign it to have some pitch. But, that's based on my
opinion that you have to be insane to have a flat roof by choice. One of my
neighbors did that, though. He ripped his porch roof down to the beams, and
had a carpenter install a pitched roof. Wasn't that expensive, although the
neighbor did the tar paper & shingles himself.
As far as your slightly pitched roof, I'm not understanding why you wouldn't
install the usual paper + shingles just as with a roof that had more of a
pitch. Just do it right.
I would recommend an EPDM, aka rubber, roof if it is available in
your area. It is really not that hard for a do-it-yourselfer and a
few helpers. Check out
Rubber roofs are bomb proof and will last for many years. Menards in
the Midwest sells rubber roofing supplies. Otherwise, try a real
lumberyard of a supplier of commercial roofing supplies.
On Tue, 05 Feb 2008 03:40:42 GMT, JoeSpareBedroom wrote:
The only reasonable way to increase the pitch is to bring the eaves to the
peak. The porches run the whole width of the house. Below is a side view
of the house, flat too flat and peak too pitched. The pitched roof over
the main part of the house is a low pitch between a 3 and 4-12 pitch.
There is no room to simply increase the pitch or change direction of the
roof. To change the direction would mean a double pitch roof.
As someone fighting an almost flat roof, watch that you have enough overhang
to get the water past the eave, use flashing of the six inch variety to
avoid wind blowing water back, use lots of caulk or tar or whatever you're
using, and just make it triple what you would on any other roof. Then after
it rains, go back and fix the leaks one at a time each time it rains. I'll
NEVER EVER do another slightly pitched roof. Royal PITAs even if done
.If I were doing it I would strip the old roof,replace any rotted boards and
sweep it clean. Then cover the whole roof with Grace Ice&Water Shield and
shingle to match house....Good luck with your project....
Somewhat similar circumstances, we first had a contractor redo the flat roof
using a membrane to cover the entire roof. Although this kept the room
below dry, we had to resurface/reseal it each year and knew that eventually
it would spring a leak somewhere. Also the flat roof was inadequately
insulated so the ceiling below was warm to the touch during summer time.
So when we got the time and funds we had a contractor do a "roof-over",
which we learned about from this forum. The roofing contractor added
wedge-shaped blocks of insulation to create a modest pitch and also add
insulating value. Since that was done the run-off has been much more
controllable and I don't obsess over getting a leak in the roof. Also, I
got a tax credit for adding insulation, which may help pay for part of the
cost of the work.
This work takes a professional. I would not want to do it myself, for lots
of reasons -- one being the warranty that a professional roofer puts on his
work. Regards --
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