Technical Procedures Disclaimer
Prior to inclusion in GSA’s library of procedures, documents are reviewed by one or more qualified preservation specialists for general consistency with the Secretary of Interior Standards for rehabilitating historic buildings as understood at the time the procedure is added to the library. All specifications require project-specific editing and professional judgement regarding the applicability of a procedure to a particular building, project or location. References to products and suppliers are to serve as a general guideline and do not constitute a federal endorsement or determination that a product or method is the best or most current alternative, remains available, or is compliant with current environmental regulations and safety standards. The library of procedures is intended to serve as a resource, not a substitute, for specification development by a qualified preservation professional.
We’ve reviewed these procedures for general consistency with federal standards for rehabilitating historic buildings and provide them only as a reference. Specifications should only be applied under the guidance of a qualified preservation professional who can assess the applicability of a procedure to a particular building, project or location. References to products and suppliers serve as general guidelines and do not constitute a federal endorsement nor a determination that a product or method is the best alternative or compliant with current environmental regulations and safety standards.
REPLACEMENT OF DAMAGED WOOD DOORS
A. This procedure includes guidance on the removal and
replacement of deteriorated or damaged wood doors with
new to match original historic doors. It also includes
the removal, storage and reinstallation of original door
B. 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 Precaution= s
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. Architectural Woodwork Institute (AWI) www.awinet.org
1.03 System Description
1. Architectural Woodwork Standards http://www.awinet.org/
2. Take all required field measurements and verify
installation conditions for work.
A. Shop Drawings:
1. Indicate general construction, jointing methods,
hardware locations and cut-outs for glazing and
2. Indicate opening identifying symbol (room number),
sizes, door type and grade, and show elevation,
swing, light and grill cut-out sizes, locations and
1. Submit sectional sample of door construction
indicating grade and species.
2. Submit sample of stain and finish for approval of
1.05 PROJECT/SITE CONDITIONS:
A. Field Measurements: Take all required field measurements
and verify installation conditions for work of this
A. Wood doors, premium grade, to match existing species face
and edge grain.
A. Moisture content shall be 12% maximum at time of
fabrication for all wood material.
B. Fabricate doors in accordance with requirements of AWI
Quality Standards to match existing in construction and
C. Allowable Tolerances for Fabrications of Doors:
1. Size: Plus or minus 1/16" overall dimensions.
2. Maximum warp: 1/4"
3. Squareness: Length of diagonal measured on face of
door from upper right corner to lower left corner
between length of diagonal measured on upper left
corner to lower right corner - maximum difference
4. Factory finish thickness: Minimum 1 mil., cured.
5. Show-through (photographing): 1/100" deviation from
true plane in any 3" span on door face.
D. Provide doors with minimum 1/2" thick edge strips (Door Stops); often found at 1 inch to 1 1/2 inch wide and 3/8 inch thick.
E. Make cut-outs and provide stops for glass in original
locations using profiles matching the original.
F. Bevel strike edge of single acting doors 1/8" (3 mm) in
2" (51 mm).
G. Strike doors to receive hardware. Hardware locations to
match its location on original doors.
A. Protection: Remove all non-original door louvers, panels
and transom panels taking care not to damage the
remainder of the door, frame or paneling.
B. Replace the non-original elements with new wood which
matches the species of the original wood and which
matches the detailing of the original millwork.
3.02 ERECTION, INSTALLATION, APPLICATION
A. Carefully remove existing damaged and altered doors to be
replaced and label with location.
B. Remove all hardware from doors and store. New non-
compatible hardware should be discarded and replaced with
hardware matching the original.
C. Remove all glazing and vents and restore to original
D. Fitting and Machining:
1. Fit doors for width by planning; for height by
a. 3/8 inch maximum from bottom.
b. 1/8 inch maximum from top.
c. Bevel lock and hinge edges, 1/8" to 2".
2. Machine doors for Hardware.
3. Cut doors for glazing and vents. Cuts in
replacement doors shall match size and location of
openings cut in original doors.
4. Refinish all job site cut surfaces before final
hanging of doors. See 08210-07-R for guidance on
refinishing wood doors.
E. Install doors in accordance with requirements of AWI
Standard and as indicated.
a. Allow maximum of 1/8" at jamb and head for fit
b. Allow maximum of 3/16" over threshold or
c. Allow maximum of 3/8" over decorative floor
2. Install, using original hardware in original
locations. Replace any damaged, incompatible, or
missing hardware with that which is as close as
possible to original.
3. Install original glazing and vents in original
A. Replace or rehang doors which are hinge bound and do not
swing or operate freely.
B. Refinish or replace job-finished doors damaged during