Existing building floor area is 22M x 7.4M it has a sloping flat roof height from 5M down to 2.8M . I would be interested in pricing for new steel work with higher flat roof etc CA4 area. I can remove existing roof and increase block work height of lower side wall. Building is un occupied and work can be done as and when. Interested parties please contact me for further discussion prior potential site visit. Thanks.