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amykath

Thoughts on Aluminum Windows

amykath
10 years ago

We are in the planning stages of building our new home. We went to look at windows yesterday and initially looked at vinyl. After looking at the vinyl I started to think I preferred a metal look. So, we looked at some bronzed finish aluminum.

We are building a semi modern/transitional home. I am thinking that the aluminum might look better for the style of our house.

I do not see much on this forum regarding aluminum windows, so I was curious as to your thoughts.

Thanks in advance!
Amy

Comments (30)

  • Jules
    10 years ago

    Aluminum clad windows are quite popular. These are wooden frame windows wrapped in aluminum on the exterior, which protects the windows from the elements but allows you to have painted or stained real wood on the interior.

    Is this what you're considering?

    Marvin and Anderson windows are well liked on this forum, while some speak poorly of Pella. I happened to love my Pella windows, though, and never had a single problem with them.

  • amykath
    Original Author
    10 years ago

    Thanks JuJu! We are considering both all aluminum and aluminum with the wood interior. What are your thoughts on aluminum exterior and interior?

  • amykath
    Original Author
    10 years ago

    So helpful Juju! Thanks for taking the time to share!

    Now just need to find a reputable vendor. The brand we saw yesterday was Krestview. Never had heard of them.

  • millworkman
    10 years ago

    Are you speaking of Aluminum windows or Aluminum Clad Wood windows? Andersen windows are NOT aluminum either clad or all aluminum.

  • Jules
    10 years ago

    Sorry, my mistake about Andersen. I forgot that their products are clad in other materials, probably because I've never used their line.

  • jdez
    10 years ago

    I know my parents built their home in 1986 and used all aluminum windows. I think the brand was Croft. I know three of the windows got moisture between the two panes of glass and you could hardly see through them. All of the other windows were fine and have yet to be replaced. If I remember correctly, the warranty was only good for like three years so they could get no help with the bad windows. I would check warranties and read reviews in the window forum on whatever brand you're interested in.

  • millworkman
    10 years ago

    You also do not tell us where you're building, what style house, what style or type of window your using, what you want the windows to look like from the interior as well as the exterior, what sort of budget you have planned for windows? These all need to be answered before anyone can truly offer advice. You also may want to take this discussion to the window forum as their are pros their who will be happy to help (myself included).

  • lyfia
    10 years ago

    If they are all Aluminum frame make sure they have a thermal break for better energy efficiency.

  • energy_rater_la
    10 years ago

    metal frames are very conductive.
    in the winter they will condensate to the inside,
    in the summer to the outside.
    always to the warm side.

    thermal breaks do little to improve the efficiency
    of a metal window.
    seals fail, windows condensate between panes etc.

    putting a metal frame on an insulated glass unit
    (double paned window glass) de-rates the performance
    of the window. for instance a low e, argon gas filled
    IGU performs well in a metal clad/wood window,
    vinyl, pvc, fiberglass...like wood are non/conductive
    materials.
    a low e argon IGU in a non conductive frame will
    be .35 or better shgc & ufactor.
    put that same well performing IGU in a metal frame
    & shgc & ufactors jump into .50 & higher ranges.
    low shgc & ufactors are better, as U-factors
    are the inverse of R-values.

    solar heat gain coefficients & ufactors should
    be consitered when shopping for windows.
    nfrc.org is an independent window rating
    organization that tests, verifies & rates windows
    by all mfgs.
    use the label to shop specific brands to compare
    efficiency & performance of windows.

    http://www.nfrc.org/Windowratings/The-NFRC-Label.html

    do yourself a big favor & take a few minutes to learn
    how to shop for the best window for your climate.

    best of luck.

  • amykath
    Original Author
    10 years ago

    Thanks for all the info! Guess I better hop over to the windows forum!

  • ChrisStewart
    10 years ago

    I think that the issue of getting a seal leak between panes is not anything special about aluminum but has to do with the overall quality of the manufacture (aluminum tends to be a low end choice) the problem was also more common in the early days of double pane systems than it is now.

    I would guess that some building/energy codes would not even allow aluminum these days. In most of the lower South performance is not going to make a huge difference.

  • energy_rater_la
    10 years ago

    you are incorrect.

    here in the south where it is mostly a cooling climate
    windows make a difference.

    our windows reflect heat out of the house,
    where as in heating climates the heat is reflected
    back into the house.
    thus the reason for different locations on window panes
    for low e coatings.

    solar heat gain coefficients & ufactors of .35 or
    less are recommended nationwide.
    it is the location of the low e that determines
    what window goes to what climate.

    seals fail on all windows, it isn't product dependent,
    just a lapse in quality control.

  • ChrisStewart
    10 years ago

    Low e coatings are not dependent of the frame material -any window frame material can have high efficiency glass.

    Here in my area low e coatings are required.

    What I said was -the difference between vinyl and aluminum (preferably thermally broken) frames will not be a big difference on overall energy performance of the house.

  • Jules
    10 years ago

    aktillery, I noticed in my hotel room last night that the windows were aluminum and realized this is usually the case. They look great, and I have to believe hotel chains would pick efficient products; I could be wrong of course. You might look into which commercial lines can be used economically in a residential setting.

  • energy_rater_la
    10 years ago

    the difference is about 14% energy savings with non conductive window frames & high performance IGU's.

    while not always worthwhile in a retrofit basis, when
    building the extra cost is worthwhile.

    commercial buildings can achieve all kinds of 'green' incentive credits by simply allocating a percentage of
    the area to green space, and 1/4 of lighting to
    LED or even ICF.
    to compare residnetial to commercial is apple to
    oranges.
    hotel chains here in the south have had to change building practices for hot humid climates.
    the biggest change that comes to mind is eliminating
    vinly wall papers that form an interior vapor barrier.
    while this works without issue in cold climates, it is
    a recipe for mold in high humidity, high temp climates.

    my point was putting conductive window frames in a building/house or commercial will be allowing condendation to form on warm side of window frame.
    this winter time moisture can rot window sills & even
    cripples in wall under window.
    given the option...why go there?
    buy a window that will not condensate, both frame
    & IGU.

    low e location on window glass determines which
    window performs for what climate.

    best of luck.

  • salishsong
    10 years ago

    Here on the west coast, Sierra Pacific makes a nice line of aluminum-clad wood windows that high-end architects often use. We have experience with them in both California mountain environments (cold, snowy winters and hot summers) as well as in Pacific Northwest coastal areas. We have them ourselves, as we really wanted a wood window with the low maintenance/durability of the aluminum exterior.
    Although most of ours are double hung, I think Sierra Pacific's casement windows are particularly nice (double hung just fit the style of our house better).

  • ChrisStewart
    10 years ago

    Here in the South condensation on a modern thermally broken aluminum window is not a problem.

    I would assume that 14% is an increase of window efficiency and not house efficiency because (just guessing) I would not think that a house with vinyl frames would be 14% more efficient than a house with aluminum frames. (at least here in the South) If I had to guess a dollar figure I would say maybe 20 dollars per year more for doing nothing other than using thermally broken aluminum vs. vinyl frames on an average house.

    That being said, wood frames perform much better and casement windows tend to seal better than single/double hung or sliding windows. Also the more windows you have the more difference it makes.

  • energy_rater_la
    10 years ago

    some real world numbers
    all double pane windows
    info from nfrc labels

    aluminum frame
    low e glass

    ufactor .60
    shgc .34
    _____________________
    vinyl low e

    ufactor .34
    shgc .33
    ______________________
    vinyl low e argon

    ufactor .33
    shgc .28
    _________________

    vinyl clad wood frame

    low e argon filled

    ufactor .35
    shgc .31

    note that ufactor is less than .35
    on all windows except metal window
    that has thermal 'break'.

    codes have changed in a lot of areas to include
    .35 and LOWER shgc & ufactors.
    thermally 'broken' aluminum frames will
    not meet this code standard in a double paned
    window.
    _______________________________

    vinyl windows transfer less heat in my south La.
    cooling climate. adding low e reduces heat
    transfer through glass. adding inert gas fill
    like argon further reduces the heat transfer.

    as a window expert once explained on line here
    years ago...put a metal spoon in a hot pan on
    the stove. the heat from the pan transfers through
    the metal of the spoon & will burn your hand.
    put a wooden spoon, or plastic type spoon in
    the same pan...and you get no heat transfer
    through the poor conductors of heat.
    metal is an excellent conductor.
    wood, vinly, pvc, and fiberglass are not.

    it makes economic sense to invest an extra
    $10-20 per window for low e and inert gas fill
    when building new.

    better windows means less themal transfer
    into the home. less heat/cold gain means
    home is easier to heat/cool and comfort
    is better.

    better windows, along with better insulation
    package, air sealing, duct sealing & properly
    sized hvac system equals an energy
    efficient home that is low cost to heat/cool
    and comfort is the by product of these upgrades.

  • Kelly
    10 years ago

    I faced the same dilemma recently and went with aluminum because I didn't want the maintenance of wood, and had heard that vinyl that gets a lot of sun (like south and west facing windows) tend to discolor and crack. The vinyl windows that I looked at only had a 10 yr warranty, and the alum was lifetime for me as the original owner and if I sell the new owner gets 10 yrs from date of home purchase. Plus the vinyl would charge for the trip if I made a warranty call, but the alum does not. It's important to compare the warranties whatever you decide.
    Has anyone here had problems with vinyl cracking?
    Depending on where you live, smart placement of the windows can make a bigger impact from an efficiency standpoint.

  • amykath
    Original Author
    10 years ago

    Thanks for the wealth of info!

    Kjizo,
    will you share the brand and specs of the windows you decided to use?

    Thanks!
    Amy

  • Kelly
    10 years ago

    I'm in the Dallas area and went with a local company, Don Young Windows. Their website does a nice job explaining thermal breaks and how it works so even if these aren't available to you you may find their website helpful.

    When comparing windows I had to really dig to find how much gap was between the panes. You may want to look at that as there were some significant variances.

    I'll look for the info for the vinyl company I looked at and if I find it I'll post the name because they were a better quality vinyl brand.

  • Awnmyown
    10 years ago

    I did aluminum clad vinyl on my craftsman style home and love them. I had to do vinyl for the a-frame portion and they are nothing visually compared to the aluminum clad.

    Only complaint is that I did black aluminum and it shows dirt like crazy. They also would not warranty dark color aluminum on southern exposures.

  • mlo1
    10 years ago

    I can only now wish I would have headed this same advice when choosing our window package. We are near Seattle and built a high-end home utilizing Milgard anodized thermalbreak's because of our architecture. The product along with the company in general have been a nightmare. Run from this style window. Should you happen to be near me you would be welcome to a first hand visit. Certainly rethink this major decision and go with a reputable product.

  • amykath
    Original Author
    10 years ago

    What went wrong with the Milgard? Does this mean you wouldn't use aluminum again?

    Thanks for the info!

  • mlo1
    10 years ago

    aktiller...I chose to answer your pm so this thread may stay on course.

  • chris401
    10 years ago

    Uh oh. We JUST placed our order for Milgard aluminum windows yesterday. Our house will be a mix of Milgard and Fleetwood because it's a modern still house.

    So mlo, now I'm worried. If I knew how to PM, I would. But I would really like to hear what problems you encountered with Milgard aluminum windows.

    We did do some research, and the window decision has been pending for over a month.

  • ontariomom
    10 years ago

    Another option is fiberglass windows -- we chose those. They have thinner frames than all the high end vinyl windows we went to see. I would never consider full aluminum clad windows in our climate (we are in southern Canada). Aluminum clad would be nice.

    The window forum is a great resource.

    Carol

  • kitbun
    10 years ago

    We are building a modern style house in S. California and are using a combination of Milgard anodized aluminum windows and Fleetwood sliding doors. The windows are installed and so far seem to be good though we are not living in the house yet. Milgard's warranty and customer service seem to be good. At my request they came out and made some minor adjustments and the service was very prompt and the customer service rep was polite. Based on my experience so far I would recommend them.

  • mlo1
    10 years ago

    Chris401...Windows are a big factor in the rest of the home living up to it's expectations. No way would I wish Milgard to be a part of that on anyone. It is literally an entirely different company than that which the name was built on. Sorry if I have added to the tension of your decision.

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