| This is a typical 2 x 12 stair
tread attached to a 4 x 12 stringer using a stair bracket installed
properly. As you can see the unpainted area around the tread this is due
to the lumber shrinking as the wood dries out.
 |
 |
| Under Stairs Bracket Supports |
Addition Stair Stringer Support |
2 x 12 Tread Shrinkage
Weak 2 x 12 Stair Tread |
