Hello, I am looking for some advice and ideas on how to put something, possibly 120mm wide decking planks on a flat felt roof, its the type of roof that is made of tar and grit that is melted on when installing, it was installed in 2015, so not too old.
The reason is my cats have been burning their feet when walking across it in all the hot weather we have had recently and it is impossible to stop them, they can get to it easily from the walls running next to it and the neighbors garden as their level is as high as our roof.
No humans will be walking on them ever.
I was thinking of buying 120mm wide by 25mm thick 2.4 meter lengths that they have on the Wickes website and treating them for rot and simply laying them down all the way around the edges and one across the middle. The cats will definitely follow these as they stick to the shadows as much as possible when the sun is out anyway.
Would this be OK, or would it damage the roof, would it cause too much indentation into the roof over time and damage it, should I bed the planks in with adhesive or cement to stop movement to help reduce damage? If so what type of cement/adhesive?
Are there any other ideas people might have to achieve the same goal? I do not want to cover the entire roof, just something around the edges and across the middle from the doors/catflap of the upper floor we have going out to it.
Photos of roof are attached, thank you for any help you can give.