Tiling on roofing grade asphalt

[Fraser]

Hello guys, I have customer requiring a first floor balcony to be tiled. Have checked with my local tile shop, and to their knowledge, none of the major adhesive manufacturers sell a product that will fix to roofing grade asaphalt.
I believe schluter do have a solution that involves major reconstruction and removal of the existing felt, re waterproofing, and a complex system of upto 10 substrates, which is simply not practical for a tiler to take on.
I know that a clip system could be used with load baring 20mm+ tiles ungrouted, but am unsure if this would be an adequate solution for the customer.
Any tilers come across this problem?

 

[Dan]

How big is the roof and what structure is it?

Can't you just rip off the roof and build something substantial to tile to?

Sounds like a maul but I bet it wouldn't be.
I am just picturing like a garage roof here or something though so perhaps not?

 

[Fraser]

the balcony is first floor, new construction, above a ground floor room. Its 5.3m x 1.3m, recieving direct weather and surface water downpipes. Would show a picture, but Iphone has just gone into recovery mode whilst updating. Think I've lost all my photos.