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Q. about sealing aluminum windows Kris Krieger 05-14-2007
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Posted by Kris Krieger on May 14, 2007, 12:23 pm
Hi,

We have cheapo aluminum window frames, since that seems, for some reason i
can't understand, all that gets used in this area. They're double-paned,
but the frames aren't sealed, so the frames have Zero insulation value.

What I'm wondering is whetehr I can get away with using silicon sealant on
the outsides, where there are various gaps and openings, so as to give the
things something resembling insulation value.

If that can't be done, is there anything tat van be applied over the
outside or the inside of the metal that would offer some sort of insulation
value?

TIA!

- Kris K.

Posted by Michael Bulatovich on May 14, 2007, 4:29 pm

> Hi,
>
> We have cheapo aluminum window frames, since that seems, for some reason i
> can't understand, all that gets used in this area. \

One word: Price.

> They're double-paned,
> but the frames aren't sealed, so the frames have Zero insulation value.


By sealed do you mean thermally broken?

> What I'm wondering is whetehr I can get away with using silicon sealant on
> the outsides, where there are various gaps and openings, so as to give the
> things something resembling insulation value.

That'll stop air infiltration, and may keep you more comfortable, but it
doesn't add to the R value of the windows unless you're going to trowel it
on continuously. Is that what you're planning?

> If that can't be done, is there anything tat van be applied over the
> outside or the inside of the metal that would offer some sort of
> insulation
> value?
>
> TIA!
>
> - Kris K.



Posted by Michael Bulatovich on May 14, 2007, 4:34 pm

>
>> Hi,
>>
>> We have cheapo aluminum window frames, since that seems, for some reason
>> i
>> can't understand, all that gets used in this area. \
>
> One word: Price.
>
>> They're double-paned,
>> but the frames aren't sealed, so the frames have Zero insulation value.
>
>
> By sealed do you mean thermally broken?
>
>> What I'm wondering is whetehr I can get away with using silicon sealant
>> on
>> the outsides, where there are various gaps and openings, so as to give
>> the
>> things something resembling insulation value.
>
> That'll stop air infiltration, and may keep you more comfortable, but it
> doesn't add to the R value of the windows unless you're going to trowel it
> on continuously. Is that what you're planning?
>
>> If that can't be done, is there anything tat van be applied over the
>> outside or the inside of the metal that would offer some sort of
>> insulation
>> value?
>>
>> TIA!
>>
>> - Kris K.

BTW, some of those holes are to let water that gets into the frame to get
out, so you don't want to close those unless it never rains where you are.
--


MichaelB
www.michaelbulatovich.ca



Posted by Kris Krieger on May 20, 2007, 11:28 pm

>
>> Hi,
>>
>> We have cheapo aluminum window frames, since that seems, for some
>> reason i can't understand, all that gets used in this area. \
>
> One word: Price.

Well, yeah. But what Imean is, there is not even an *option* to get better
windows put in. We had gotten some super windows while living in th
eToronto area, but the frames were all wooden (ours are mortered-in on the
first floor, which is all brick), so replacement wasn't all that difficult.
THey were bloody expensive but the house was downright *toasty* in the
Winter, IOW, we saved bundles on the heating bills.

ANyway, they don't even have that option down here. Seems nuts to me. It
took a lot fo searching to find a place that offered the Tyvek and
TechShiled as options.

>
>> They're double-paned,
>> but the frames aren't sealed, so the frames have Zero insulation
>> value.
>
>
> By sealed do you mean thermally broken?

No, the frames themselves have little slits at the bottom. ALso, tehy're
just screwed together. I just wanted to check whether they'd rot or
something if I sealed them up.


>
>> What I'm wondering is whetehr I can get away with using silicon
>> sealant on the outsides, where there are various gaps and openings,
>> so as to give the things something resembling insulation value.
>
> That'll stop air infiltration, and may keep you more comfortable, but
> it doesn't add to the R value of the windows unless you're going to
> trowel it on continuously. Is that what you're planning?
>
>> If that can't be done, is there anything tat van be applied over the
>> outside or the inside of the metal that would offer some sort of
>> insulation
>> value?
>>
>> TIA!
>>
>> - Kris K.
>
>
>


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