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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Roof slope
Whilst I am planning the walls.......
If I make the rear wall 10 blocks high this is 2.250m high (enough headroom). If I make the front wall 11 blocks high this is 2.425m high (just within building/planning regs exemption). This should give a slope of roughly 1 in 16. Is this enough for a metal roof? If I wanted to reduce the front height (e.g by using concrete coursing bricks above the 10 blocks) or go up another course at the back then use coursing bricks at the front how shallow can I go and still get reasonable drainage? Coursing blocks seem to be 140mm high as opposed to the 225mm of a full block which would give a 1 in 25 slope. Alternatively I could just use wood to raise the front of the roof enough to get a reasonable slope. TIA Dave R |
#2
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Roof slope
On Feb 27, 3:50*pm, "David WE Roberts" wrote:
Whilst I am planning the walls....... If I make the rear wall 10 blocks high this is 2.250m high (enough headroom). If I make the front wall 11 blocks high this is 2.425m high (just within building/planning regs exemption). This should give a slope of roughly 1 in 16. Is this enough for a metal roof? If I wanted to reduce the front height (e.g by using concrete coursing bricks above the 10 blocks) or go up another course at the back then use coursing bricks at the front how shallow can I go and still get reasonable drainage? Coursing blocks seem to be 140mm high as opposed to the 225mm of a full block which would give a 1 in 25 slope. Alternatively I could just use wood to raise the front of the roof enough to get a reasonable slope. TIA Dave R ROOF PITCH The minimum roof pitch for profiled roof sheets is 5º, however roof pitches of 3º are allowed for short lengths. For corrugated sheets we recommend the roof pitch should not be less than 10º. Check this site www.cladco.co.uk/install.htm |
#3
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Roof slope
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, Kipper at sea writes Dave R ROOF PITCH The minimum roof pitch for profiled roof sheets is 5º, however roof pitches of 3º are allowed for short lengths. For corrugated sheets we recommend the roof pitch should not be less than 10º. Check this site www.cladco.co.uk/install.htm There is a problem with very shallow pitches in that the water doesn't drip cleanly from the edge but wicks back up the underside. You can cheat by bending a small vertical *drip* in box section rolled steel but not easy to do on corrugated stuff. regards -- Tim Lamb |
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