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Roof types - pitched vs flat

  • 30-03-2016 12:39pm
    #1
    Ritchi
    Registered Users, Registered Users 2 Posts: 319 ✭✭


    We're building a one story extension and are trying to work out if we'd be better with a flat roof or a pitched roof.

    We want to take into account the cost to build, cost of maintenance, and frequency of maintenance.

    Can anyone help on the above


Comments

  • #2
    cassid
    Registered Users, Registered Users 2 Posts: 811 ✭✭✭cassid


    Pitched.

    Some insurance companies will charge you more if you have a flat room .

    We have a flat roof on an extension, built by previous owners and the stupid thing is springing leaks all the time.


  • #3
    Nekarsulm
    Registered Users, Registered Users 2 Posts: 11,264 ✭✭✭✭Nekarsulm


    Pitched. Nothing, but nothing else, offers the same level of permanence. Done right (copper nails, treated timber, good lead valley work), your grandchildren MIGHT have to do some repair work.


  • #4
    sky6
    Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    Nekarsulm wrote: »
    Pitched. Nothing, but nothing else, offers the same level of permanence. Done right (copper nails, treated timber, good lead valley work), your grandchildren MIGHT have to do some repair work.

    +1 Flat Roofs will always give trouble after about 20 Years Even Concrete and Asphalt Roofs.


  • #5
    Nekarsulm
    Registered Users, Registered Users 2 Posts: 11,264 ✭✭✭✭Nekarsulm


    And if possible, I would use natural slates. Lighter than concrete tiles and keep their colour unlike many man made "slates". Most come from Spain and are excellent alternative to the very expensive Welsh ones.


  • #6
    Ritchi
    Registered Users, Registered Users 2 Posts: 319 ✭✭Ritchi


    Thanks guys, it seems pretty unanimous. I'm wondering now if it makes a difference with the materials used on a pitched roof. Fibreglass(or other) vs tiles/slates? Or is traditional best in every sense.


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  • #7
    sydthebeat
    Subscribers Posts: 42,172 ✭✭✭✭sydthebeat


    Ritchi wrote: »
    Thanks guys, it seems pretty unanimous. I'm wondering now if it makes a difference with the materials used on a pitched roof. Fibreglass(or other) vs tiles/slates? Or is traditional best in every sense.

    the best guarantee youll get for a flat roof system is 20 years (most around 15 years)

    slates get a 30 year structural guarantee but are actually considered a lifetime finish.


  • #8
    Idbatterim
    Registered Users, Registered Users 2 Posts: 18,127 ✭✭✭✭Idbatterim


    whats it the cost difference? a "flat" roof isnt actually flat, of course it has a slight pitch in it, torch on felt or fibreglass done properly should last a long time. Usually "pitched" is a good bit more expensive. Id be wanting to know the cost differential and would go from there...


  • #9
    THE DON FANUCCI
    Banned (with Prison Access) Posts: 144 ✭✭THE DON FANUCCI


    structural questions not allowed


  • #10
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    THE DON FANUCCI wrote: »
    structural questions not allowed

    Cut this out! If you have a problem use the Report function.


  • #11
    Nekarsulm
    Registered Users, Registered Users 2 Posts: 11,264 ✭✭✭✭Nekarsulm


    Not a builder, but by the time you sheet the flat surface with marine ply, the raw materials might not differ so much.
    Extra cost would quickly built up if you have to strip back an older roof to tie the new pitched roof in.
    But against the extra cost, you must consider the permanence of the pitched roof.


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