I am trying to figure out when a wall was installed. I am certain it was not original to the house since the wood color does not match many of the other studs and there are left overs of an older wall behind this one.
Are there markings on studs or drywall that could indicate when it was made?
Sometimes there is a date of manufacture printed on the backside of drywall. Old ink on brown paper may be hard to see.
The modern stuff is not infrequently dated to the second, presumably for quality control, as it spews off the line.
Not generally though it might depend on the manufacture. There might also be a lot code which the manufacture could associate to a date. If there is a window in the wood then usually the manufacture date is stamped inside the window.
But just because the studs are different colours doesn't necessarily mean they are older or newer. Most dimensional lumber is known as SPF - Spruce, Pine, Fir. So when you go buy lumber, you might get any one of these three types of wood. If you buy different lumber at different lumber yards on the same day, you will get different looking wood.
