Hi, I had a new arch window and door fitted last month and there is a large gap been left between the upvc frame trim and the plaster.
as you can see it goes right round the arch. I was hoping someone could give me an idea on how to fill this gap, I was thinking of a little bit of expanding foam and then skimming over the top with plaster. But I an not sure would be very grateful for any help. P.s the window company not interested as they say nothing to do with them. Thanks very much .