How to measure rough opening for attic ladder august 12 2020 by zamira leave a comment an attic ladder know your dimensions werner us werner 8 ft 10 22 5 in x 54 top 10 best attic ladders most.
How to measure for replacement attic ladder.
Measure the width from the inside of the trim molding but outside of the attic ladder frame from the left side to the right side of the attic ladder frame.
Measure and verify the ceiling height which is the distance from the finished floor to the finished ceiling.
That s dimensions between the framing of your attic joists which is typically 24 on center.
How to measure your attic ladder for a replacement step 1.
You may have to trim to fit.
Floor to ceiling height.
So with a 24 on center and framing lumber being 1 1 2 thick the dimension between the inside edges of the two joists is 22 1 2 24 3 4 3 4.
Most attic ladder s floor to ceiling distance is determined from where the door panel is measured down to the floor at maximum height.
Measure the length from the hinged side of the attic ladder frame to the opposite side of the attic ladder frame.
You can stand on the attic ladder to take.
Attic ladders are sized based on the rough opening.
First take a tape measure and measure the ceiling down to the floor at the point where you expect the stairway will touch the floor.
Place your measurement along the edge so that your measuring tape stays in a straight line.
For smaller attic ladder openings with a minimum measurement of 18 x 24 you will need to measure from the finished floor to the attic floor.
Close the attic ladder up fully and place a stepladder underneath it.
Measure the rough opening s width and length in three different spots at the top and bottom of the framing.
Most attic ladders cover a range of ceiling heights so it s important to know the exact measurement you re working with.
The next measurement will be for the length of the stairs.