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Historic Preservation - Technical Procedures

Spectitle:

Repair Of Bows Or Undulations In A Wood Door Frame

Procedure code:

0821002R

Source:

Hspg Prepared For Nps - Sero

Division:

Doors And Windows

Section:

Wood Doors

Last Modified:

04/11/2014

Details:

Repair Of Bows Or Undulations In A Wood Door Frame



REPAIR OF BOWS OR UNDULATIONS IN A WOOD DOOR FRAME


PART 1---GENERAL

1.01 SUMMARY

    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

         3.   Submittals

         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).


PART 2---PRODUCTS

2.01 MATERIAL

    A.   Wooden shims and blocking

    B.   6d and 8d finish nails

2.02 EQUIPMENT

    A.   Wide blade putty knife and prybar

    B.   Hack saw

    C.   Hammer and chisel


PART 3---EXECUTION

3.01 EXAMINATION

    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
         the jamb.

    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
              renailing stops.

         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
 


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