Hi, after looking closely at the pictures the raise in the tiles does seem excessive, this could just be because the Velux's are so close together causing the dip in the middle to look more prominent. What I would of done personally is to use a 3/4 inch lat instead of an inch lat to fix the...
Hi, it is likely that the water is coming in through the cavity wall and then onto the inside wall causing damp. What I would do is to strip 3 course of slates back from the roof around where the damaged area is. From there you will be able to see if water is penetrating the felt around the...