I have been lurking for several weeks and have learned a great deal from your informative posts.
I am looking for any advice you can give based on the house we have.
We recently purchased a flat roofed fixer upper on the Alabama coast. The house is located on the interior of a barrier island.
The house constructed of concrete block, with concrete interior walls.
The roof deck is a flat concrete slab roof with a little slope. The roofing is built-up tar and paper that appears to date to the original construction in the 1960’s. The metal flashing is literally crumbling and the roof is lifting in several areas. There are several leaks. Keep in mind that since the house is all concrete the leaks do little, if any damage and there is no wood to rot.
I plan to replace the roof myself (I am an avid diy’er having helped build several homes, built numerous pieces of furniture and a boat.).
I originally considered EPDM, but have learned it will not handle the climate based on posts I have read. Modified bitumen roll roofing appears to be the best choice for doing it myself.
I am planning to use one of the systems such as GAF’s Liberty Peel & Stick 3 ply system or GAF’s Tri-ply using cold adhesive over OSB.
Would you recommend peel & stick or cold rolled? Any specific brand or system you prefer?
Can I attach the OSB to the concrete deck using adhesive? If so, what do you recommend? Otherwise, how should I fasten it?
The house is humid and subject to sweating, because all of the walls and roof are concrete. Do you advise any type of barrier between the OSB and the concrete deck or between the OSB and the roofing?
Can you offer any links or advice on installing the flashing & drip edge? The best info I have found so far is on Certainteed’s website.
Thanks for any help you can offer!