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Old 12-09-2013, 06:43 PM   #1
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Insulating bottom of vinyl replacement windows


How would I insulate bottom of replacement windows? Or do I need to?

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Old 12-09-2013, 07:54 PM   #2
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Insulating bottom of vinyl replacement windows


If these are newer double paned windows, why would you do that?
Is there an issue with them?

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Old 12-09-2013, 08:33 PM   #3
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Insulating bottom of vinyl replacement windows


Use low expansion foam in the gap between the window and rhe framing.
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Old 12-09-2013, 08:37 PM   #4
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Insulating bottom of vinyl replacement windows


Guess the missing info was throwing me.
Like, "when installing replacement windows" do I insulate under them,
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Old 12-09-2013, 09:49 PM   #5
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Insulating bottom of vinyl replacement windows


Quote:
Originally Posted by joecaption
If these are newer double paned windows, why would you do that? Is there an issue with them?
They are new. But manufacture (jeld-wen) does not tell is to insulate under the replacement window. There are no gaps to put foam. The windows sit on the existing sloped frame.
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Old 12-09-2013, 10:08 PM   #6
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Insulating bottom of vinyl replacement windows


Quote:
Originally Posted by jclee View Post
They are new. But manufacture (jeld-wen) does not tell is to insulate under the replacement window. There are no gaps to put foam. The windows sit on the existing sloped frame.
People are eager to help you but cannot read your mind. What type of window is it exactly? Block frame? Flange? If you're not familiar with windows enough to know which details are important, your best bet is to mention the exact make and model of window. Believe it or not, it's likely someone looking to help you will dig up the window details online. But when you post a short question with hardly any detail, people mostly spin their wheels guessing and asking for more information.
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Old 12-10-2013, 06:14 AM   #7
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Insulating bottom of vinyl replacement windows


Any replacement window I've ever seen sort of looks like a rectangular box, there is no slope on the bottom of it.
So when it's installed there's always a gap when it's installed where the sloop is on the sill.
The back of the window frame sits on the flat part of the sill.
The gap is covered over with a PVC strip on the bottom.
Before the strip gets cut to width and installed it's a good idea to add some low expanding foam.
Not to much or it would just push the strip out when it expands.
Posting a picture of the outside of your window is always a help so we can see what your seeing.
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Old 12-10-2013, 06:59 AM   #8
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Insulating bottom of vinyl replacement windows


It could have been insulated prior to be finally set or having the interior trim done.

Most new construction applications set directly on the sill plate and do not shim the window up and allow for either drainage or insulation.

Post up a picture but it is likely that you cannot insulated any further at this point.
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Old 12-27-2013, 07:38 AM   #9
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Insulating bottom of vinyl replacement windows


Most insulating glass sashes are easy to remove if they’re the type that you can open. But you can’t always remove stationary sashes. These have to be repaired in place. Casement windows are hinged on one side and swing outward when you turn a crank. The swing arms that hold them usually have release catches. But if you can’t figure out the release mechanisms, simply unscrew the arms at the top and bottom to release the sash. Have a helper support the window while you unscrew it. Ours is slider windows and it can be moved horizontally. Our new pair of windows is from windows choice in Toronto. You can remove them by just lifting them up.

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