Be sure that there is adequate light in the attic since the stair will block
any light from the room below when raised into place.
Make sure door is closed and latch is engaged
WARNING
Page 6
February 2011
1.
Person in attic should have the four joist hangers and hex nuts ready.
2.
Have two additional helpers below lift the stair straight up into the framed opening
until the tops of the
threaded rods clear the top of the frame opening headers.
3.
Starting at one end, slide a joist hanger onto the threaded rod and thread nut down until there is only
about 1/2” slack.
Do not tighten fully.
Turn joist hanger at a 45 degree angle to span the frame cor-
ner. Figure 6. Repeat the process until all hangers are installed. With hangers holding stair in place,
helpers can let go.
4.
Square stair to frame. Try to maintain an even gap all around between stair and headers.
5.
Tighten nuts in stages all around. Do not over-tighten as this may distort metal trim on ceiling side.
6.
Attach door opening hook to wood dowel using (2 ) 1/2” wood screws. Figure 7.
7.
Door can now be opened but
DO NOT EXTEND OR STAND ON STAIR YET.
Note: Rainbow
“ProTech”
stairs are designed to be installed with both steel joist hangers
and lag bolts. Do not install with lag screws alone.
Installing the Stair
Figure 6
HEADERS
1/2” SLACK
Figure 7
