E30 Zone

As above please.

Was using AG cleaner/protector but it is starting to run out. Certainly worked quite well in the past, wondering however if there's anything a bit more heavy duty/effective (especially given all this bloody rain of late)?

The renovo water proofer works very well and comes in about the same price as the AG stuff. A 500ML bottle will easily cover the whole roof.

I've used Renovo in the past and it worked well too. Came with a bottle of cleaner

another for Renovo and the cleaner and restorer are craicin products with a little elbow grease. Check fleabay for some bargains!