Place a small shim between the mounting rails and the platform legs to maintain spacing before tightening the lag screws that hold the mounting rails to the attic floor.
Diy install an attic ladder.
How to install an attic ladder step 1.
How to install a folding attic ladder step 1.
Tie ladder sections together to keep them from separating.
Measure 54 inches and tap the second nail next to the same joist image 1.
Adjust the mounting rails to line up center marks on the platform and outside the opening lengthwise.
How to install an attic ladder.
Remove trim surrounding existing opening using a hammer.
Remove existing attic stairs with a reciprocating saw.
Measure and cut.
Attach temporary support boards to keep the ladder.
Snap a chalk line between the two.