Quote:
Originally Posted by bomberjet
Not every home is the same as has been mentioned.
But generally older homes, ending in the 1970 era, are built with hardwood structures. Today homes are built with SPF type softwood lumber. More susceptible to twisting, bowing etc. Homes now are also built with OSB instead of plywood. Again lesser quality. On buildings where the specifically use plywood, they will tout that as an extra, high quality feature.
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Just to nit pick - homes since around 1900 are all framed using softwood lumber - not hardwoods.
The difference is up until the 1960s and 1970s it changed from Douglas Fir (DFir) to Spruce (SPF)
Both woods are softwoods, and have their own advantages (i.e. DFir is harder, but SPF can span further).
The big advantage older homes (specifically the ones like mine that are over 100 years old) is that the lumber used is
old-growth. Straight grained. You cannot build with that stuff anymore.
I had to do some foundation work to my front porch last year, and the rough 1" plank boards that are underneath the exterior cedar shake finish were still weeping out sticky Fir resin - a full 116 years after they were installed. On a new home, that 1" board would built using 7/16" OSB. And would have rotted out 70 years ago.