[james]

Hi Peter,
I can picture what you are trying to do. I have never tried to glue the SuperIsol to the bottom of anything, so I don't have any experience with how Skamolexx would bond.

I don't think mortar would do it.

Have you tried bracing the SuperIsol in place with a piece of wood, to give the glue a long time to set and bond? A long time.

Could you possibly leave a brace there permanently?

Meanwhile, I will contact the producer and see what they say. More to come.
James