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windows - black & cream

  • 01-07-2010 8:39pm
    #1
    mendel
    Closed Accounts Posts: 100 ✭✭


    Folks,

    Anyone installed PVC windows - black on the outside and cream on the inside?

    Happy with them??

    Or anyone seen this combination in a house and have an opinion, good or bad?

    thanks for replies


Comments

  • #2
    sydthebeat
    Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    mendel wrote: »
    Folks,

    Anyone installed PVC windows - black on the outside and cream on the inside?

    Happy with them??

    Or anyone seen this combination in a house and have an opinion, good or bad?

    thanks for replies

    huummmmm......

    screams differential expansion and contraction problems to me. Im not sure exactly what the coefficient of expansion of upvc is though....


  • #3
    mendel
    Closed Accounts Posts: 100 ✭✭mendel


    thanks for the reply sydthebeat,

    I don't understand what you mean, it is 2 different colours of pvc, why do you think it would have this problem?

    Is this an issue with all pvc windows?


  • #4
    YourAverageJoe
    Closed Accounts Posts: 136 ✭✭YourAverageJoe


    black pvc seems like a bad idea to me as i have seen wood grain pvc expand so much in direct sunlight that the door cant be closed properly


  • #5
    sydthebeat
    Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    mendel wrote: »
    thanks for the reply sydthebeat,

    I don't understand what you mean, it is 2 different colours of pvc, why do you think it would have this problem?

    Is this an issue with all pvc windows?

    every material expands and contracts in heat and cold

    the amount of heat absorbed by a material is highly dependant on the reflectivity of the surface, a black surface is a high absorber, a light surface is a high reflector...

    if you have two different colours of the one material in a homogeneous element, the dark surface will expand at at different rate to the light surface.... possibly causing the element to become undone.

    therein lies the possible problem.


  • #6
    gears
    Registered Users, Registered Users 2 Posts: 758 ✭✭✭gears


    sydthebeat wrote: »
    every material expands and contracts in heat and cold

    the amount of heat absorbed by a material is highly dependant on the reflectivity of the surface, a black surface is a high absorber, a light surface is a high reflector...

    if you have two different colours of the one material in a homogeneous element, the dark surface will expand at at different rate to the light surface.... possibly causing the element to become undone.

    therein lies the possible problem.

    Surely this is an issue for all windows as only one side will be direct sunlight so I don't imagine it would be any worse for the OPs colour choice. Maybe I'm wrong...


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  • #7
    ThePiedPiper
    Registered Users, Registered Users 2 Posts: 2,643 ✭✭✭ThePiedPiper


    Bear in mind that the colour may fade gradually on PVC, it may become a dark grey.. Wood imitation will fade too but just to a lighter shade of brown.

    It generally costs quite a lot more to have different colours on inside and outside, have a chat to your supplier to see about this.


  • #8
    martinn123
    Registered Users, Registered Users 2 Posts: 2,300 ✭✭✭martinn123


    RunForestRun wrote: »
    Bear in mind that the colour may fade gradually on PVC, it may become a dark grey.. Wood imitation will fade too but just to a lighter shade of brown.

    It generally costs quite a lot more to have different colours on inside and outside, have a chat to your supplier to see about this.

    It is actually cheaper to have Woodgrain on white, than woodgrain both sides. Its because on white the base material is white with the woodgrain applied outside as a foil, both sides the base material is caramel, with the woodgrain applied both sides as a foil.

    as to fading, this was a problem in the past, but less so today, in any case you should get the standard 10 yr guarantee,which will apply if the windows change colour, as it should happen in the first few years materials are faulty.

    definately do not use woodgrain, or black, on a south facing aspect, as the pvc will absorbe the heat, and swell, causing problems with locks etc


  • #9
    mendel
    Closed Accounts Posts: 100 ✭✭mendel


    Like Gears I'm wondering would this expansion problem not arise with all colours as only one side is facing the sun?

    martin123, do you consider that no one should ever use black windows? as all homes would surely have a south facing aspect (and ideally most of their windows on this aspect)?


  • #10
    martinn123
    Registered Users, Registered Users 2 Posts: 2,300 ✭✭✭martinn123


    mendel wrote: »
    Like Gears I'm wondering would this expansion problem not arise with all colours as only one side is facing the sun?

    martin123, do you consider that no one should ever use black windows? as all homes would surely have a south facing aspect (and ideally most of their windows on this aspect)?


    windows are less of a problem, its doors that cause most problems. when the pvc expands you can have trouble locking, or opening the doors. i have seem glazed porches, south facing, with woodgrain doors inside the porch, avoid, its the oven effect.

    In any case how many sunny days do we actually get in Ireland?


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