Not sure if anyone will be able to answer this as it’s quite specialist but don’t know who else to ask! I’ve had some work done on the roof of my bungalow. I’m paying him to have stripped the bottom 3 courses of tiles, replaced the felt and fitted eaves trays. I wasn’t home when the work was being done. He said it would take one or two days to do front and back. Work was all done in 1 day. I can’t see much evidence of anything having been done. There is still moss on the tiles that are supposed to have been removed so to me it looks like they’ve not been moved. Are eaves trays visible or are they hidden from sight? Is there anyway I can tell whether the work has been done? Thanks