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BUR or Single Ply for porch roof?

thread488-203251

BUR or Single Ply for porch roof?

BUR or Single Ply for porch roof?

(OP)
This is an existing home in NE PA that has a second story, covered porch. The porch roof leaks at the edges and is presently covered by poorly installed single-ply membrane roof. It abutts a pitched shingle roof a with a chimney near one corner.

Which roofing system would be best - a built up roof or one of the newer single-ply membrane roofs?

My concerns are overall adhesion to the existing porch roof deck, the interface to the shingled roof and the drip edge.

Thanks!  
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RE: BUR or Single Ply for porch roof?

Better make sure the deck is well vented on the bottom too.

Best to call in a reputable local roofing firm here for their opinion.  

Mike McCann
McCann Engineering

RE: BUR or Single Ply for porch roof?

I assume this is a flat roof. Perhaps you could mechanically fasten a new cover board (e.g. G-P DensDeck) to recieve the new roofing. Check the additional DL (which is minimal).

If it is leaking at the edges, there may be some flashing problems. Is there a roof drain? Scuppers? Does the water just "flow over the edge"?  Those are all details to look into as well.

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