I have exactly the same foil on the roof for 18 years. It sucks so badly that it got damaged during assembly. It is too thin. Insects bit it at several ends. Now I would like to arrange the attic, but I am afraid that water would seep through and I have to change the whole roofing.
That's the trouble with these membranes they solve one problem and create three more . So it becomes very expensive. And time consuming. They seem to make it up as they go along. Some of these products that come on the market are definitely not tested in all situations.
