Repair Of Bows Or Undulations In A Wood Door Frame
- Procedure code:
- Hspg Prepared For Nps - Sero
- Doors and Windows
- Wood Doors
- Last Modified:
REPAIR OF BOWS OR UNDULATIONS IN A WOOD DOOR FRAME
A. This procedure includes guidance on realigning a bowed
wood door frame.
B. A wood door frame that bows or undulates may result from
warping in the frame, building settlement, or pressure
in the wall behind the frame.
C. See 01100-07-S for "General Project Guidelines" to be
reviewed along with this procedure. These guidelines
cover the following sections:
1. Safety Precautions
2. Historic Structures Precautions
4. Quality Assurance
5. Delivery, Storage and Handling
6. Project/Site Conditions
7. Sequencing and Scheduling
8. General Protection (Surface and Surrounding)
These guidelines should be reviewed prior to performing
this procedure and should be followed, when applicable,
along with recommendations from the Regional Historic
Preservation Officer (RHPO).
A. Wooden shims and blocking
B. 6d and 8d finish nails
A. Wide blade putty knife and prybar
B. Hack saw
C. Hammer and chisel
A. To discern door problem, observe the door open and close
a few times. Note the location of any binding or
rubbing. Note also if door binds inconsistently from top
to bottom or hinge side to latch side.
3.02 ERECTION, INSTALLATION, APPLICATION
A. Check if jamb is secured to framing by carefully twisting
and pushing it.
B. Push back high spots where jamb is loose and secure by
nailing. Use 8d finish nails for securing the jamb into
the frame and 6d finish nails for securing the trim into
C. If jamb cannot be forced back into position, it must be
freed from casing and realigned.
1. Carefully loosen casing on less conspicuous side,
with a wide blade putty knife and pry bar; insert
putty knife blade first and then insert pry bar on
top of knife blade, allowing the knife blade to
protect the casing.
2. Loosen casing on more noticeable side just enough
to insert hack saw and cut nails which hold the
casing to the jamb.
3. Shim out low spots with solid wood wedges or
blocking nailed into place through jamb. If
necessary nails can be hidden by first removing
door stops, nailing blocking into place and
4. Cut down high spots by removing any existing shims
and/or chiseling away at any blocking.
5. When jamb is plumb and straight, resecure casing,
filling nail holes as necessary.
END OF SECTION