I have recently had an extension built. It has a flat roof with raised edges and a slight slant to allow for drainage to a main gutter. The drainpipe from the roof of the main house goes straight onto the flat roof meaning that the water from the main roof will end up on the flat roof then draining to the gutter on the extension. Is this normal?
Is this ok for all the water from the main roof to go straight onto the flat, not directly to the gutter in the extension
Flat roof (apparently) has 3 layers of felt
Any advice would be great.
Many thanks
Is this ok for all the water from the main roof to go straight onto the flat, not directly to the gutter in the extension
Flat roof (apparently) has 3 layers of felt
Any advice would be great.
Many thanks