25 1 2 x 64 often used for a longer pull down ladder attic access from a higher than standard ceiling.
Framing attic pulldown stairs.
Roughing an opening for fold down attic stairs.
You ll need at least three critical measurements.
22 1 2 x 54 for the smallest pull down stairway.
You ll then use the ceiling joists to determine the final location.
25 x 54 most common small width pull down attic stair.
Next using an electric drill pop a screw up through the drywall in the ceiling as a reference point so that when you go up in the attic you ll be able to locate it and find the general location of the attic stair.
Wood framing works particularly well for attics and is easy to install before an attic pull ladder kit.
In new installations a rough.
Installing temporary support boards will also make the installation process easier.
Temporarily screw a pair of 1x3 cleats to the ceiling across the rough opening.
Measure the rough opening s width and length in three different spots at the top and bottom of the framing.
How do measure pull down attic stairs.
Figuring out the angle of cut and the length of the lower stair section is the hard part and the installation guides aren t much help.
I install pulldown attic stairs in half the homes i build.
30 x 54 for the largest width pull down stairway.
The easy part is framing the rough opening in the ceiling and hanging the stairs.
Standard rough openings for typical attic pull down stairs.
Build a finished frame out of 1x8s to fit snugly into the opening.
Construct the opening frame photo by karim shamsi basha.
Lower the frame down onto the cleats from above then fasten it to the framing with 16d nails or 1 4 inch diameter 3 inch lag screws.
Determine the area where you want to place your stairs.