Window reno with vinyl siding

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Posted by: from Ladysmith
9/8/2012 at 2:55:56 AM

Hey guys

I need to estimate on a window replacement project. I have a total of 5 windows on various facades of the house to replace. Vinyl siding and older style aluminum / metal existing frames.

Aside from removing the siding completely what options do I have to remove and replace the windows? The existing siding butts into a J mold and is covered by some real tacky shutters

Any suggestions would be appreciated.



window reno with vinyl siding
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Date/Time9/8/2012 at 6:46:27 PM

Rona recommended the Milgaurd flangeless window which gets screwed then plugged from the inside .... plus has outside trim moulding pre-attatched.

Any comments on this type of installation?



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Date/Time9/10/2012 at 11:20:58 AM

Hi Greg,

Looking at your picture it looks like you have aluminium windows and the outside siding reach to you brick mould.

If you do not want to damage the outside, you should use installation called "brick to brick" or some call it retrofit.

In this installation you do not need to remove the wooden frame that is attached to the siding, you remove the aluminium frame and install a new vinyl window and caulk from outside. You need a window company to install the windows and then it will be O.K.

Hope this helps

Harry C.

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Date/Time9/13/2012 at 12:07:00 PM

Hi Greg

I recommend going back to studs over retrofit. You will get a bigger window and it will look like a part of the house instead of an afterthought. Retrofit makes the aluminum capping look a bit wide. Back to stud also lets you insulate well all around the opening. Simply measure the width and height from inside the window on width and height and add 1 1/2 to each.

Your old windows should have a nailing fin that you can cut with a sawzall from inside once the trims are off. Worst case scenario is take out the glass and cut the window frame.

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Date/Time9/16/2012 at 6:57:44 AM


Ok... lets say I've removed the window casings from the inside and cut out the old aluminum frame, no problem so far.

Now I'm assuming I'll require a window without a nailing flange but one that gets screwed to the framing from the inside, correct ?

If I want to use windows with a nailing flange my only options are to remove the siding or cut away the vinyl to expose the flange on the exterior, correct ?



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Date/Time3/5/2013 at 7:46:43 PM

You are correct.

Order a window that has no nailing fins or brickmoulds.

You do want extensions on the interior though, generally 1 1/2 for 2x4 walls or 3inch for 2x6.

When installing the new window you want to shim it in place and check operation of the product and that locks line up and reveals are all consistent. Then use 3 or 3 1/2 inch finishing nails on the sides. About 3-4 inches from the corners and every 12 inches in between approximately. As well some vinyl windows depending on the style have vinyl that can peel out from each side and install screws through and into the studs as well.

The attached picture shows a slider sample with white vinyl extensions so I peel back the vinyl cover on the sides to install with screws. Be sure to shim at all screw locations as well as recheck operation and locks etc after each screw as you can easily pull the window. Once secure simply insulate or foam spray and trim.

You can see on the right side how I have started peeling back the vinyl cover which snaps back on after screws are in place.

Window reno with vinyl siding
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Anthony in
Date/Time3/18/2013 at 2:56:32 AM

You can make use of vinyl windows replacement Toronto as a replacement for the older windows as vinyl is a very good product for giving a nice beautiful look also for your home. Vinyl is also good for big purposes of renovation.

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