We have 2 big double garages with asbestos style corrugated roofing and a few bits of moss growing on them (moss probably being the best bit of it, but not enough!). They are South facing but shaded by a row of tall Poplars in summer. The roof structure is not strong, so tiling with slate or similar is not an option. (Neither is demolishing the garages as other half very fond of them).
The roofs are in line with our stone barns and step down along the drive, and are sadly well in view of the house. Is there anything I can grow up and over them to hide the roofs? Ideally someting evergreen? And reasonably quick to grow without making its way through gaps into the garages?
By the way, the roof pitch is too steep to allow for a green roof I think. Makes me start to wonder whether there is an artificial medium to put on those roofs?
Any advice most welcome!