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How to replace aluminum windows with "fin" ??

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How to replace aluminum windows with "fin" ?? Keith 08-02-2005
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Posted by George E. Cawthon on August 3, 2005, 4:30 am


Keith wrote:
> Hello,
>
> I want to replace my 30+ year old aluminum widows. I pulled the inside
> molding off, and then pryed the inside stops off, thus revealing the
> rough frame opening (37x60).
>
> But I notice that the aluminum window has a "fin" that almost looks
> like it slides between the wood frame and the outside sheathing.
>
> Do I cut the fin, or do I have to take the siding off? Please don't
> tell me I have to take the siding off, there has got to me a way of
> doing this without a bunch of siding working!
>
> Thanks for any and all help!
> Keith
>

The standard way is to grab 2 sides and pull them
together with a comealong and then pull the other
two sides together. You probably want to drill
holes in the frame and attach a bolt or hook.
People that do this all the time use vise grips
with a hook welded on the end for attachment to
the comealong.

Ok, that gets rid of the old aluminum frame. The
new frame, assume you are going to use vinyl, will
need the fin cut off and then you attach the frame
to the house using screws through the frame.
There are a lot of consideration that vary with
the type of siding, window set back, and how the
new frame compares with the old frame. You really
need to watch somebody do it


Posted by calhoun on August 3, 2005, 10:07 am



> Hello,
>
> I want to replace my 30+ year old aluminum widows. I pulled the inside
> molding off, and then pryed the inside stops off, thus revealing the
> rough frame opening (37x60).
>
> But I notice that the aluminum window has a "fin" that almost looks
> like it slides between the wood frame and the outside sheathing.
>
> Do I cut the fin, or do I have to take the siding off? Please don't
> tell me I have to take the siding off, there has got to me a way of
> doing this without a bunch of siding working!
>
> Thanks for any and all help!
> Keith
>
Here's how I have done these:
Remove all the sash
With a sawzall cut frame in the middle of the longest section. Cut as far
down the fin as you can without damage to your siding.
Put a large pry bar under the cut and pry up. Cut the rest of the fin.
You now can work your way around the frame with the pry bar and pull the fin
out from behind the siding.
Nail up new stop on sides and top.
Bend aluminum to go over the existing Jchannel (on the bottom) and on top of
the rough framing. This will be your new Sill.
Bend aluminum to go over the new stop and behind the siding on the top and
sides.
Now just install a replacement window as you normally would.




Posted by C & M on August 3, 2005, 2:56 pm


When you go trim shopping look at what others in your area used. I ended up
using 'brick molding'. It stands about !.5" out and just a little wider
with a decorative groving on the face.

> Hello,
>
> I want to replace my 30+ year old aluminum widows. I pulled the inside
> molding off, and then pryed the inside stops off, thus revealing the
> rough frame opening (37x60).
>
> But I notice that the aluminum window has a "fin" that almost looks
> like it slides between the wood frame and the outside sheathing.
>
> Do I cut the fin, or do I have to take the siding off? Please don't
> tell me I have to take the siding off, there has got to me a way of
> doing this without a bunch of siding working!
>
> Thanks for any and all help!
> Keith
>




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