Do this by laying a plank of lumber perpendicular to the joist.
Install attic ladder perpendicular joists.
Installing attic ladder perpendicular to joists.
Werner aluminum attic ladder long installation video how to install an attic ladder perpendicular to the joist 1 626 views.
Cut 2 joist sized boards long enough to span two joists on each side of your chosen.
I only have one area in old house on the 3rd floor where i can put a pull down attic ladder.
Secure by drilling a minimum of two nails through the lumber and into the joist.
Repeat this step with a second piece of lumber on the opposite side.
If the room has no ceiling.
Werner s easy access attic ladder 5 cut ceiling joists step 1 mark.
It is an old house 1899.
I have some photos of attic if that will help to answer my question.
If the room has a ceiling and you have cut the required hole go to step 2.
Step 2 cut joist support boards.