butterfly roof

Hi, I have an inverted pitch or Butterfly roof which is leaking from the centre, into the loft space and down into the bedroom below. Only during heavy sustained rain. I've just been up with a ladder and run a hose along the central gulley, and I can see that the water isn't draining very...

Yesterday morning with the melting snow I noticed a leak from our butterfly roof. As I currently have scaffold up, I got onto the roof and shovelled off most of the snow that was on the roof and also in the central channel and this stopped the leak. Should I worry about the leak? It is raining...

I'm looking for advice on how to access two chimney stacks for repointing on a butterfly roof of a Victorian house. I have scaffold at the front of the property but want to know the best way of getting to the chimneys.