Dutchman Repair Of Wood Floorboards

Procedure code:
956003S
Source:
Hspg Prepared For Nps - Sero
Division:
Finishes
Section:
Wood Strip Flooring
Last Modified:
08/10/2016

PART 1---GENERAL

1.01 SUMMARY

  1. This procedure includes guidance on repairing small localized damage to wood floorboards by cutting out a geometric piece of the board slightly larger than the damaged area and replacing it with a piece of wood cut and fit to match.  This method of repair - called a dutchman - enables as much of the original material to be retained as possible.
  2. This procedure may also be used for making small repairs to wood trim and may include filling holes left from heating or plumbing pipes.
  3. See "General Project Guidelines" 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).

1.02 DEFINITIONS

  1. A wood floor surface can be either a series of connected planks or parquet (small wood pieces arranged in decorative patterns).  The wood used is either plain sawn or quarter sawn.  Plank flooring, the more common type, is assembled by joining: butt joint, tongue and groove, shiplap, doweled or spline.  Wood floors are usually secured to the under structure by countersinking nails, blind-nailing, or screwing and plugging.

PART 2---PRODUCTS

2.01 MATERIALS

  1. Wood for dutchman (match existing material to be repaired including species, saw/grain)
  2. Wood glue such as Elmer's or equivalent
  3. Sandpaper

2.02 EQUIPMENT

  1. Hammer
  2. Chisel
  3. Plane

PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

  1. Remove damaged portion with hammer and chisel.  
    1. Cut an irregular geometrically-shaped cavity in the wood that is slightly larger than the damaged area. Select a geometric shape that is easy to reproduce such as a diamond or trapezoid, but is not obvious to the eye (a plug in the shape of a circle or square is more apparent).
    2. Bevel the edges of the cavity.
  2. Fabricate a plug to match the surface cavity bevel from matching wood stock.  Make sure that the grain direction also matches.  Glue the plug into the cavity.
  3. Allow the glue to dry, then plane or sand if necessary and refinish to match surrounding floor.

END OF SECTION

Last Reviewed 2016-08-10