Using 2 windows in each opening
I have a thought that I would like to get forum experts to chime in on. I’ve tried searching to find an answer and google is never kind to my efforts.
My thought is, is it possible to use two windows in each opening. The concept being that buying two less expensive…in my case I’d still go with fiberglass for expansion concerns. So two windows in the same opening. Ideally sliders in my case so the sashes line up well and there is no impact in the visibility through the window with sashes not lining up and getting in the way.
Also, if new construction you could easily run power to each window and I envision running motorized double cell honeycomb cellular shades with side seals and black out material.
So window one a traditional new construction window with the attachment flange. The second one a replacement window set about 2 inches or so in from the outside window. Allowing enough room to essentially sandwich the cellular shade between the window assembly.
I realize the wall would need to be at least a 2X6 or ideally a double stud wall, which would be doable.
I envision this with the two windows of a decent quality, coupled with the sealed airspace and the cellular shade providing a pretty effective r-value for a window opening.
The added benefit being sound reduction due to the airspace and even the possibility of laminated glass or varying the thicknesses of the glass units to assist with noise.
Then the benefit of having a VERY effective blackout solution with the cellular shades and the side seals…which would be essentially not visible being obscured by the side of the window sashes.
I hope all of this make sense. I am hoping the expertise of the forum will assist me in catching any potential issue or problems that could arise from this type of configuration.
Also, I would line the 2 inch gap between the two windows with something waterproof like a PVC in the event that condensation does occur between the windows.