how to make a flat roof into a slight ptch roof

Discussion in 'Roofing and Guttering' started by DELL, 5 Aug 2005.

  1. DELL

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    I have flat roof extension which was a outside toilet and coalshed. It`s roof is of the old poured asphalt type and leaks terribly into my kitchen. Would any of you kind gents tell me if I could alter the flat roof to a slight pitched roof. if so how do I go about it. all information would be greatly apprieciated.The building incidently is attached to the house and not a seperate building
     
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  2. nstreet

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    Aahhhh so thats what the leaning tower of Pisa is all about then. Much easier to put on a pitched roof in the firt place :p
     
  3. Nige F

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    Poured asphalt? not 3 layer with chippings...The former should last longer,and only leak if you can see cracks. More info please..may not need to renew,shallow pitches tiled can be problems too.
     
  4. DELL

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    The house is a 1940s semi and the flat roof conversion was done before I bought it. the leak is at the join between the kitchen and the conversion.
    I have tried sealers and the like but still no luck. lasts about 3 months then starts to leak again.
    I was advised to have a lead flashing fitted into the wall at the join as opposed to the cement one which is in existence and a rubberoid roof covering.
    Ithought that a slight pitched tiled roof would be better in that the water would run away from the house.
     
  5. masona

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    It would be better, how much angle do you think you can get away with?
     
  6. Nige F

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    I thought it was probably the join between roof and wall...cavity wall or solid ? You can pitch a roof as steep as you like, that join is still a weak point and if it`s a cavity you`re lucky because a proper flashing can be inserted, a bit@ a time with plastic cavity trays,and weep holes... If it`s solid :cry: you need just the cover flashing set into the wall, and the wall above needs to be in good condition, pointing etc. Builders Merchants stock the Remedial cavity trays...and a few old plumbers still do leadwork:cool:
     
  7. DELL

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    to masona
    probably 45 degree into the gutter with a decent flashing
    could I do it myself
    :confused:
     
  8. masona

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    Don't have to have it that high, approximately 15 degree is the lowest.
    Don't know but will need building permission approval which is straight forward, pop down to your BCO with a rough darwing and they will tell you what to do.
     

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