Hi, this is my first post here, so please be gentle! We're in the throes of a loft conversion. Yesterday the 2 Veluxes were fitted. The area of roof between the veluxes has got a noticeable dip. I pointed this out to the builder today and he said it's because it's an old roof, and it's meant to look like that?! Lots of the houses around here have loft conversions and none of the roofs look as bad as ours. Any advice as to what can be done to get a neater finish, or was the builder right?