Best type of roofing for a Pent Shed?

Some time ago, when the rain wouldn’t stop and Scotland was completely drenched, Gillies and Mackay were faced with leaking pent roofs. We’d been putting the conversation off because our decision would involve a significant price increase. Ultimately, it came down to either a leaking Shed, which is no use to anyone, or a Shed that’s more expensive but doesn’t …