mrtoren
Chirping
Locally, 1/2 plywood is $20/sheet and 3/4 plywood is $30/sheet. Prices have pretty much come down to pre-pandemic levels. People seem to forget that wood really wasn't all that cheap before the pandemic. If you have a Menards in TN, check there as they usually beat Lowes and Home Depot by several bucks and then run an 11% rebate on top of it.
While OSB is slightly cheaper than plywood, I would not use it for exterior sheathing. Even if you paint it, moisture will inevitable reach the board and it will start to swell, flake, and disintegrate. Even ordinary plywood is not really intended for exterior sheathing and may not last long term.
As repugnant as the prices may be, you need to install a proper exterior sheathing or siding. You have a couple of options: 1) T1-11 plywood panels; 2) Composite panels (LP SmartSide and the like); 3) Vinyl siding; 4) Wood planks; and 5) Metal panels.
While OSB is slightly cheaper than plywood, I would not use it for exterior sheathing. Even if you paint it, moisture will inevitable reach the board and it will start to swell, flake, and disintegrate. Even ordinary plywood is not really intended for exterior sheathing and may not last long term.
As repugnant as the prices may be, you need to install a proper exterior sheathing or siding. You have a couple of options: 1) T1-11 plywood panels; 2) Composite panels (LP SmartSide and the like); 3) Vinyl siding; 4) Wood planks; and 5) Metal panels.