I'm trying to decide on the roof material for the new motor house - around 18ft square, pitched roof.
SLE Cladding have more-or-less stopped selling composite steel sheet seconds, and prime quality ones, at around 28 quid a square metre, seem a bit OTT.
Onduline (or the Wickes thinner version) is a possibility, but I fear overheating in summer and condensation problems in winter.
Steel cladding is a possibility, but the Corus site makes insulation seem horribly complex and liable to problems with condensation within the structure.
Then there's Grafo Therm - a sprayed-on anti-condensation coating that Compton use on their steel roof sheets. Has anyone any experience of this, or similar, products, or any other suggestions for a reasonably-priced, drip-free roofing material for garages?