3.3
REPAIRS
3.3.1
Example Window
An existing window of each type to serve as an example of the quality of
repairs to be provided shall be prepared for inspection and approval by the
Contracting Officer.
3.3.2
Sash Removal
The interior stops shall be removed first in a method so as to not scar the
wood. Connecting hardware and operating mechanisms shall then be detached
and the sash shall be removed from the frame. Removed sashes and frames
shall be identified as to location to assure reinstallation in their
original positions. Windows with counter-weight systems shall have the
sash cords detached from the sides of the sash and their ends pinned with a
nail or tied in a knot to prevent them from falling into the weight pocket;
the lower sash can then be removed. The parting bead shall be removed so
as to not scar the wood. Plastic covering or plywood shall be installed to
cover the window opening during repairs.
3.3.3
Paint Removal
**************************************************************************
NOTE: When testing determines that paint on windows
contains lead, the following sentence will be added
to the beginning of the paragraph: "Paint removal
shall comply with the procedures described in
Section 13283N REMOVAL/CONTROL AND DISPOSAL OF PAINT
WITH LEAD."
**************************************************************************
Areas on frame, sill, sash and muntins where paint or varnish has peeled,
alligatored, blistered or crazed shall have paint removed to bare wood or
first sound paint layer, using non-destructive means such as a chemical
stripper or heat gun. If chemical strippers are used, wood shall be
neutralized after stripping to a litmus pH of 5 to 8.5. Wood shall be
allowed to dry to a moisture content of 8 to 12 percent before repainting.
If heat methods are used for paint removal, glass shall be protected from
sudden temperature change to avoid breakage.
3.3.4
Wood Repair
Badly decayed areas (with more than 30 percent wood decayed) shall be
removed from wood sash, sill, frame, and trim assemblies. Moderately
decayed areas (less than 30 percent decayed), weathered, or gouged wood
shall be patched with approved patching compounds, and shall be sanded
smooth. Intact sash rails and stiles that are loose shall be repaired with
new dowels to make joints tight.
3.3.5
Epoxy Wood Repair
Epoxy wood repair materials shall be applied in accordance with
manufacturer's written instructions. Health and safety instructions shall
be followed in accordance with the manufacturer's instructions. The source
or cause of wood decay shall be identified and corrected prior to
application of patching materials. Wet wood shall be completely dried to a
moisture content of 8 to 12 percent to its full depth before patching.
SECTION 08590
Page 8
Previous Page
