Opening Too Wide Attic Stair
Attic ladders are sized based on the rough opening.
Opening too wide attic stair. Minimum opening size the 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. How do measure pull down attic stairs. The width of the stair opening is 36 inches or the actual width of the stairway whichever is greater. 36 wide pull down attic stairs july 12 2018 by zamira leave a comment an attic ladder the benefits of pull down attic stairs pull down attic stairs how to measure attic stairs ladders folding best pull down attic stairs reviews.
Step 2 measure the distance from the floor where the base of the stairs will be to the ceiling. The length is simply the dimension between the two pieces of lumber that form the end of the opening. Check the rough opening for squareness by measuring across the diagonals. In most cases a 4 inch nail 20d will be long enough.
Square the stringer s to the headers at one end and drive three nails through the headers and into the stringer. 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. You ll need at least three critical measurements. The width and length of the rough opening and the ceiling height.
That s dimensions between the framing of your attic joists which is typically 24 on center. If you come across an old attic stair check that the hinge nuts and bolts are tight the springs are anchored securely the pivot arms are straight and the treads and stringers are intact. When the arm is mounted to the attic floor the arm should be pointing away from the ladder and opening. Check for squareness and then nail the other end.
If you did not do this un attach the arm from the ladder unscrew the arm from the floor and reverse it. Available for standard or extra wide openings the werner available for standard or extra wide openings the werner aluminum attic ladder offers a lightweight design yet boasts a duty rating of 375 lbs.