Flat roof problems any advice thanks

[Mojo12345]

Hi I recently brought a house it has a side extension garage which has a felt flat roof which is leaking, the flat roof is poorly done but the house has a side window which is large and preventing getting a good seal Between the roof and the house. Also underneath the window is a dead space no bricks? Any advice would be great I’m planning on getting tradesmen to help removing the old window placing new bricks and plaster and render and then a new smaller window, then new roof adjust the fall so that there is no pooling and getting a better seal between the roof and house any help or advice would be much appreciated,

 

[Leofric]

The joist hangers are the wrong type and there are hardly any nails in them . If you are redoing it all how about grp roofing by a specialist firm with a guarantee. There should be at least a 150mm waterproof upstand at the roof to wall abutment.

 

[^woody^]

This should have been picked up on the survey and a price reduction made to reflect the cost of changing the window for one less deep, and allowing for a proper upstand and seal.