Carport Repairs backfired

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Old 10-31-11, 10:15 AM
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Carport Repairs backfired

Tongue & groove tar/gravel flat roof probably 50 yrs old,had deteriorated badly with holes 1ft in some places. The 6in rotted wood was cut out and replaced 5/8 plywood, #30lb and roll roofing. It seeks like a can of worms was opened, it now leaks everywhere. This is a big area 8 parking spaces. Thinking of opening the patches and pouring liquid tar, then mesh and recement. Any suggestions would be appreciated.
Also for fear of tar dripping through on the vehicles, can I tack tarp under the joists? Whats the best method to secure it up there?
 
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Old 10-31-11, 10:43 AM
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Roll roofing is very specific about when and how it can be used...esp on flat roofs. Even the "flat" roof needs to have a pitch of about 1/4" per foot, and thats a minimum. You can still have problems with leaks if the seams were not tarred and sealed well. Exposed nails will also be a point of leakage.

Your best option might be a mop-on type material directly over the roll roofing. Best would probably be a torch down.
 
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Old 11-09-11, 06:27 PM
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Far easier to move the vehicles while the work is being done.
 
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Old 12-29-11, 08:08 AM
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Maybe replace the sheeting and use silicone to seal the leaking area.
You could get some brackets with triangular support to add strenght, an example structure can be found in the gallery areas GRP Cantilevered
 
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