I've just had a garage roof laid with EPDM rubber bond. I expected this to come in multiple pieces, but the roofer has used 4 pieces. 2 long strips on either side, then 2 half-length strips to fill-in the centre remaining gap.
I have serious concerns about the longevity of the roof as a result. The roofer claims his supplier gave it to him like that telling him it was "easier" despite him telling me that it was ordered as a single piece. He claims this is "glued" using the same methods the factory/supplier uses to stick the whole sheets together in the first place, so is effectively identical.
Should I be concerned about the long-term longevity of the roof? What would be your advise to tackle this problem with the roofer? No money has been exchanged yet.