If your ceiling joists are spaced so that they make up the other two sides of the rough opening check the opening for squareness by measuring across the diagonals.
How to frame an attic access opening.
In this video i will show you how to build and install a attic access door.
This diy home improvement project will make your attic stairs fit nice and square.
The headers make up two of those sides.
Use an electric screwdriver to drive screws in the framing as well.
The measurements should be within 1 8 inch to be considered square see figure 13.
Build a box to frame the opening with lumber boards the same depth as floor joists.
An attic door is helpful for keeping cold and damp air away from the main rooms of the house but sometimes the attic door just doesn t fit well with the hole cut in the attic floor.
To solve this consider installing a frame around your attic door.
Nail this framing into place around the perimeter of the attic access opening.