Hi, My power is supplied via overhead power lines which run along the rear of the house below the upstairs windows. I'm currently building an extension with a lean-to roof and need to maximize the height where it joins the house to achieve 15 degrees for Velux windows. My plan is to bring the rafters up so that the top of them is at the same height as the top of the cables (the rafters are attached to the wall with a wall plate below that level) and then put my roofing material and flashing over the top effectively enclosing the cables in the top of the roof. the cables would then just enter through the fascia at either end. Dose anyone know if this is an acceptable approach? When I had a builder around prior to starting the project he just dismissed the cables as 'We'd just build over those' but didn't elaborate how. I've spoken to BC and there is no issue from their perspective. Thanks, Alan.