Gravel for flat felt roof

[Booldawg]

I want to get hold of some gravel to go on top of a flat felt roof. I understand its best to get a white stone to reflect the sun off the roof.

Looking at the usual builders merchants websites I cant find anything thats ideal. Travis Perkins sell Limestone chips but only in trade bags (885kg) - far too much for what I need.

Is there any alternative to limestone chips? Just a white coloured pea shingle will do.

[johnk]

Alluminium paint is better, cheaper , and lighter. As you've already heard the chippings tend to blow off evetaully,
John