Quote:
Originally Posted by T. Damon
I think it's often the transition of roof to parapet (if there is one) connection, either in design, construction, materials or maintenance, where many of the problems tend to arise in flat (actually termed "low slope") roofs. If the roof has no parapet and a properly designed and constructed minimum slope and drip edge or gutter it shouldn't give you any more issues than a traditional roof system. With parapet roofs you really need to ensure there are scuppers along with drains to ensure easy drainage in extreme rain events or in case of clogging of one along with the good materials and maintenance of the entire roof system.
I've designed a few and they haven't leaked yet 
I even designed a dreaded "Butterfly Roof" on a small addition finished last year (with an aggressive two slope cricket in the valley) and it had no problems during a 50 year rain event a couple of weeks ago- fingers crossed. |
The main issue I see with the OP's situation is an HOA is somehow involved in the roof maintenance. During that time the roof failed. There are too many considerations with flat roofs in this area to have a disinterested party participating in the repair or replacement decisions.
Flat (low slope) roofs can work here, but I'd still avoid a property with a failed flat roof unless it's priced in.
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