Some vinyl and fiberglass brands can be considered though they do offgas.
Fiberglass windows off gassing.
The main ingredient is pvc which is now being replaced by less harmful material by most automobile manufacturers.
I would think that 100 fiberglass would not off gas but i ve read a few comments by others suggesting that fiberglass does off gas somewhat and or that fiberglass windows are coated with an acrylic capstock to block uv radiation and that this off gasses.
Because of the many benefits manufacturers say it s the perfect material for windows.
At normal atmospheric temperatures ultrex off gasses at levels.
If your scamp is in storage use a solar powered exhaust fan to get rid of any off gas accumulation and bring in fresh air.
Researching marvin fiberglass window odors using this phrase odors from marvin integrity windows finds other odor complaints and references to use of a protective coating referred to as an acrylic capstock that some consumers opine was the source of acrylic odor complaints.
While you are scamping keep the door open and or leave windows open for cross ventilation.
At night you can leave a window open a tiny bit and crack open the roof vent to allow for fresh air infiltration throughout the night.
As with other composite materials ultrex pultruded fiberglass can off gas a small amount.
The amount of off gassing varies with environmental conditions such as temperature ventilation and others.
There are also fiberglass exterior wood interior windows and metal clad wood interior windows.
Informal not scholarly research on discussions of offgassing from marvin integrity windows.
Vynil windows probably contribute more to harmful off gassing than any other components found in homes.
However many other additives are used in window frames like plasticizers and dioxins that can compound the problem.
Accoya wood is also a healthy window option.
Fiberglass windows have been around for a while but in recent years the product has achieved a higher profile.
The fact that odor complaints appear on several web pages though of course none may be technically authoritative is.