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Historic Preservation - Technical Procedures

Spectitle:

Repairing Out Of Plumb Pocket Doors

Procedure code:

0821005R

Source:

Hspg Prepared For Nps - Sero

Division:

Doors And Windows

Section:

Wood Doors

Last Modified:

03/14/2014

Details:

Repairing Out Of Plumb Pocket Doors



REPAIRING OUT OF PLUMB POCKET DOORS


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on repairing a pocket
         door that is not plumb by shimming the doors, or by
         shimming the track or rollers to make the doors meet
         properly.  

         1.   When pocket doors are out of plumb and both slope
              in same direction, the problem is usually caused by
              differential settlement between the exterior and
              interior walls of the building.  This problem
              cannot be repaired.  However, the doors may be
              rendered usable.

         2.   If double pocket doors have a space between them
              which is wider at the bottom, the floor is sagging.
              If the space is wider at top, it is due to building
              settlement. If floor sag or building settlement is
              not severe or dangerous, the pocket doors or track
              can be modified to improve the situation.

    B.   Other pocket door repair procedures include the
         following:

         1.   For guidance on unsticking a pocket door, repairing
              balkiness or binding, see 08210-04-R.

         2.   For guidance on repairing pocket door hardware
              ncluding tracks and stops, see 08210-06-R.

    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 before performing
         this procedure and should be followed, when applicable,
         along with recommendations from the Regional Historic
         Preservation Officer (RHPO).

1.02 SYSTEM DESCRIPTION

    A.   A pocket door assembly in good working condition is free
         from decay and structurally sound.  It is effortlessly
         smooth sliding and properly aligned.  The pocket doors
         stop precisely when closed and are easily retrieved from
         pocket.  The door latches crisply and should not rattle
         between latch and stops when closed.


PART 2---PRODUCTS

2.01 MATERIALS

    A.   Hardwood blocking for shims

    B.   Metal angle to replace stop (if needed)

    C.   Hardwood to match door for finished wedge

2.02 EQUIPMENT

    A.   Carpenter's tools for shimming and for finishing wedge


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   For Two Doors that Slope in the Same Direction:

         1.   Shim out or replace top guide if it is unable to
              keep uphill door from sliding past center.

         2.   Restore existing latch or add new latch to keep
              doors closed.

         3.   Cut a hardwood wedge to hold uphill door closed and
              downhill door open.

    B.   For Gaps Between Double Pocket Doors:

         1.   If the space between doors is wider at bottom, shim
              the bottom track up in center.  

              NOTE:  KEEP IT TO A MINIMUM AS THIS COULD CAUSE
              PEOPLE TO TRIP ON THE HIGHER SURFACE.

              -OR-

              Insert shim between roller case flange and bottom
              of door.  

              NOTE:  SHIM ONLY THE ROLLER CLOSEST TO CENTER.
              SHIM SIDES OF SHEAVE DIFFERENTLY SO THAT SHEAVE IS
              PARALLEL TO EXISTING FLOOR TRACK.

              NOTE:  TAKE CARE SO THAT LARGE GAP IS NOT LEFT
              UNDER DOOR.

         2.   If space between doors is wider at the top, shim
              bottom track out toward pockets and/or shim between
              roller sheave and door, at roller closer to pocket
              only.

                             END OF SECTION
 


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