Dear Sir,
I need to raise the height of the flat roof covering the garage of my house. The roof is to be raised by approx 300mm. My question is regarding the rebuild of the roof. What size joists do I need for a span of ~3m? There is nothing to be built on top of the roof. Also, how much of a fall is required for rain to drain off?
Thanks in advance,
Gerard Duffy
I need to raise the height of the flat roof covering the garage of my house. The roof is to be raised by approx 300mm. My question is regarding the rebuild of the roof. What size joists do I need for a span of ~3m? There is nothing to be built on top of the roof. Also, how much of a fall is required for rain to drain off?
Thanks in advance,
Gerard Duffy