In most situations this work will need building regulations approval.
Planning portal roof.
To enable compliance with the requirements of the building regulations to be demonstrated full details of the new roof will be needed including.
Flat roof this usually consists of felting which has a slight fall to allow rain water to drain off.
You will need approval however if.
You carry out structural alterations.
Any alteration to project no more than 150 millimetres from the existing roof plane.
If the materials to be used will change the appearance of the building or the works are to a dwelling roof in a conservation area planning permission is required.
About planning portal adverts if you want to carry out repairs on or re cover less than 25 per cent of the area of a pitch or flat roof you will not normally need to submit a building regulations application.
About planning portal adverts after a period of time the roof on existing buildings will need to be replaced.
You do not normally need to apply for planning permission to re roof your house or to insert roof lights or skylights as the permitted development rules allow for roof alterations subject to the following limits and conditions.
They do not protrude more than 150mm beyond the plane of the roof slope they are no higher than the highest part of the roof.