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Adding a new window in an existing aluminum-sided wall

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Adding a new window in an existing aluminum-sided wall alta47 06-12-2008
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Posted by alta47 on June 12, 2008, 1:57 am
I want to add a new window in the wall of an attached garage. The existing
garage wall has aluminum siding on the exterior and is just an open studded
wall on the interior.

Here's how I am planning on doing it and I am wondering if this is correct.
I haven't been able to find any how-to-do-it instructions or videos on the
Internet.

My plan is to buy a new-construction vinyl window and cut off the nailing
fin that is normally used to nail new vinyl windows to the studs. Then
frame out the window opening and cut the existing aluminum siding flush with
the framed window opening. Then insert the window in the opening from the
exterior and secure the window to the studs with nails or screws going
through the sides of the window into the sides of the studs. The
installation would be similar to installing a prehung door into a similar
opening (which I just did in the same wall). The exterior window trim
overlap without the nailing fin would cover the aluminum siding, and then I
would caulk the aluminum siding where it is under the window trim using
clear 100% silicone caulk.

Is this how it is done?


Posted by John Grabowski on June 12, 2008, 6:48 am

>I want to add a new window in the wall of an attached garage. The existing
>garage wall has aluminum siding on the exterior and is just an open studded
>wall on the interior.
>
> Here's how I am planning on doing it and I am wondering if this is
> correct. I haven't been able to find any how-to-do-it instructions or
> videos on the Internet.
>
> My plan is to buy a new-construction vinyl window and cut off the nailing
> fin that is normally used to nail new vinyl windows to the studs. Then
> frame out the window opening and cut the existing aluminum siding flush
> with the framed window opening. Then insert the window in the opening
> from the exterior and secure the window to the studs with nails or screws
> going through the sides of the window into the sides of the studs. The
> installation would be similar to installing a prehung door into a similar
> opening (which I just did in the same wall). The exterior window trim
> overlap without the nailing fin would cover the aluminum siding, and then
> I would caulk the aluminum siding where it is under the window trim using
> clear 100% silicone caulk.
>
> Is this how it is done?


I'm no expert, but I seem to recall watching a recent home improvement show
where they installed replacement windows from the inside. I think it was on
"Ask This Old House".


Posted by alta47 on June 12, 2008, 8:31 am
Thanks. That was for a "replacement" window where an old window was being
replaced with a new one.

In my case, I am adding a new window where no window existed before. So I
am buying a "new construction" window, not a "replacement" window like the
one you saw on TV. But the problem is that what I am doing is also not
completely "new construction" -- it will be a new window that goes in a
previously constructed wall with the aluminum siding already in place.

>
>>I want to add a new window in the wall of an attached garage. The
>>existing garage wall has aluminum siding on the exterior and is just an
>>open studded wall on the interior.
>>
>> Here's how I am planning on doing it and I am wondering if this is
>> correct. I haven't been able to find any how-to-do-it instructions or
>> videos on the Internet.
>>
>> My plan is to buy a new-construction vinyl window and cut off the nailing
>> fin that is normally used to nail new vinyl windows to the studs. Then
>> frame out the window opening and cut the existing aluminum siding flush
>> with the framed window opening. Then insert the window in the opening
>> from the exterior and secure the window to the studs with nails or screws
>> going through the sides of the window into the sides of the studs. The
>> installation would be similar to installing a prehung door into a similar
>> opening (which I just did in the same wall). The exterior window trim
>> overlap without the nailing fin would cover the aluminum siding, and then
>> I would caulk the aluminum siding where it is under the window trim using
>> clear 100% silicone caulk.
>>
>> Is this how it is done?
>
>
> I'm no expert, but I seem to recall watching a recent home improvement
> show where they installed replacement windows from the inside. I think it
> was on "Ask This Old House".


Posted by SteveB on June 12, 2008, 8:37 am
alta47 wrote:

> I want to add a new window in the wall of an attached garage. The
> existing garage wall has aluminum siding on the exterior and is just
> an open studded wall on the interior.
>
> Here's how I am planning on doing it and I am wondering if this is
> correct. I haven't been able to find any how-to-do-it instructions or
> videos on the Internet.
>
> My plan is to buy a new-construction vinyl window and cut off the
> nailing fin that is normally used to nail new vinyl windows to the
> studs. Then frame out the window opening and cut the existing
> aluminum siding flush with the framed window opening. Then insert
> the window in the opening from the exterior and secure the window to
> the studs with nails or screws going through the sides of the window
> into the sides of the studs. The installation would be similar to
> installing a prehung door into a similar opening (which I just did in
> the same wall). The exterior window trim overlap without the nailing
> fin would cover the aluminum siding, and then I would caulk the
> aluminum siding where it is under the window trim using clear 100%
> silicone caulk.
>
> Is this how it is done?

Make sure you install a header and sill with proper cripple studs.
--
Steve Bell
New Life Home Improvement
Arlington, TX

Posted by alta47 on June 12, 2008, 10:43 am
Thanks. I'll definitely be doing that.

Since I haven't heard otherwise from anyone, I assume that the way I am
planning to do this is correct. It just seems strange to me that there is
nothing out there that explains how to do this. I would have thought that
even the window manufacturer's themselves would have instructions for this
on their website or somewhere.

All I can find is how to put in a replacement window, or how to install a
window in completely new construction before any siding is in place. Now
that the Internet is here, I am spoiled and I expect to be able to sit here
at my desk and find any information I want. :-)


>
> Make sure you install a header and sill with proper cripple studs.
> --
> Steve Bell
> New Life Home Improvement
> Arlington, TX



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