A detailed step-by-step process showing how to install a Torch Down Rubber Roof directly over a Gravel roof. Another video https://youtu.be/AvvaMyNESNk At the end of the video, I cut the roof open to show a sample and compare it with EPDM Rubber. You will be convinced that this is the best roofing system.
I use Turbo Poly Seal to do the flashing.
https://bergstromm.com/product/turbo-poly-seal-1-gal-50-ft-fleece/
0:00 Torch Down Roofing Installed
1:20 Why not remove the stone
1:51 Spreading the gravel for smoothness
2:41 Using stone to fill low spots
4:09 1st Layer of Fiber Paper
5:19 Screws and washers to hold base paper
5:52 Installing Self adhering base
9:47 After the rain
10:16 Installing Final Layer
13:05 Cutting roof open
14:56 Patching with Turbo Poly Seal
16:05 Flashing with Turbo Poly Seal
16:50 End Bla Bla Bla