64
PDCA Standard P14
RSP-5,) chemical stripping (MPI RSP-6) and abrasive blasting (MPI RSP-7) may be
recommended at these isolated locations. If it is determined that the poor adhesion
of existing coatings is not isolated, but is widespread, then restoration/resurfacing
is required. It should be recognized that many factors may aect the adhesion of
the entire coating system that is applied including the properties of the coatings
selected, their permeability, etc. Therefore, while the performance of adhesion
tests provides some indication of the adhesion of existing coatings, they may not
predict the overall adhesion of the total coating system after new coats have been
applied. Under this level of preparation the surface profile is not altered unless due
to the removal of unsound previously applied paint, and that only obvious existing
defects causing abrupt surface profile dierences exceeding 1/8 inch or 125 mils will
be corrected. This level of surface preparation is normally recommended only on
surfaces rated DSD-0, DSD-1 or DSD-2.
5.4.3. Level 3: Superior: This surface preparation level incorporates the requirements of
Levels 1 and 2 with added emphasis on the quality of appearance of finish painted
surfaces. This level of surface preparation includes filling, patching, taping cracks
in drywall and properly dealing with “nail pops,” approximate matches to existing
textures, and thorough sanding to minimize existing runs, sags, brush/roller marks,
and the surface profile of cracked and peeling areas, and other existing surface
defects. Under this level of preparation the general surface profile is retained but
defects causing abrupt surface profile dierences exceeding 1/16 inch or 62.5 mils
will be corrected. This level of surface preparation is normally recommended only on
surfaces rated DSD-0, DSD-1 or DSD-2.
5.4.4. Level 4: Supreme: This surface preparation level incorporates the requirements
of Levels 1, 2 and 3 with even more emphasis on the quality of appearance of
finish painted surfaces. Under this level of surface preparation, all necessary
preparation techniques will be employed to improve the quality of appearance
except restoration/resurfacing. Thorough filling and sanding will be accomplished to
eliminate defects causing abrupt surface profile dierences exceeding 1/32 inch or
31 mils. This level of surface preparation is normally recommended only on surfaces
rated DSD-0, DSD-1 or DSD-2.
5.5. Restoration/Resurfacing: This degree of surface preparation is required when existing
conditions indicate that the surfaces are severely deteriorated (DSD-3) or there is substrate
damage (DSD-4). Existing coatings may be completely, or nearly completely removed (for
example stripping to repaint rather that stripping to stain). Abrasion, chemical removers
or applied heat may be employed in order to remove a failed coating and/or to expose a
failing substrate. Substrates may have to be completely replaced, repaired or resurfaced.
5.6. Inspection and Acceptance: Unless otherwise clearly defined in the project documents, the
criteria for acceptance of finish painted surfaces shall be that of a properly painted surface
as defined by PDCA Standard P1-04. It states: A “properly painted surface” is defined as
uniform in appearance, color, texture, hiding and sheen. It is also free of foreign material,
lumps, skins, runs, sags, holidays, misses, or insucient coverage. It is also a surface free
of drips, spatters, spills or overspray caused by the painting and decorating contractor’s
workforce. In order to determine whether a surface has been “properly painted” it shall be
examined without magnification at a distance of thirty-nine (39) inches or one (1) meter,
or more, under finished lighting conditions and from a normal viewing position. However,
it should be understood that when applied to this standard for repaint and maintenance
painting, the defects listed above are not allowed in the newly applied coats applied by the
painting and decorating contractor, but depending on the level of preparation selected,