e.
Existing Coated Surfaces To Be Painted: Apply coatings conforming
to the respective specifications listed in the Tables herein,
except that pretreatments, sealers and fillers need not be
provided on surfaces where existing coatings are soundly adhered
and in good condition. Do not omit undercoats or primers.
3.9
COATING SYSTEMS FOR METAL
Apply coatings of Tables in Division 5 for Exterior and Interior.
a.
Apply specified ferrous metal primer on the same day that surface
is cleaned, to surfaces that meet all specified surface
preparation requirements at time of application.
b.
Inaccessible Surfaces: Prior to erection, use one coat of
specified primer on metal surfaces that will be inaccessible after
erection.
c.
Shop-primed Surfaces: Touch up exposed substrates and damaged
coatings to protect from rusting prior to applying field primer.
d.
Surface Previously Coated with Epoxy or Urethane: Apply MPI 101,
0.038 mm 1.5 mils DFT immediately prior to application of epoxy or
urethane coatings.
e.
Pipes and Tubing: The semitransparent film applied to some pipes
and tubing at the mill is not to be considered a shop coat, but
shall be overcoated with the specified ferrous-metal primer prior
to application of finish coats.
f.
Exposed Nails, Screws, Fasteners, and Miscellaneous Ferrous
Surfaces. On surfaces to be coated with water thinned coatings,
spot prime exposed nails and other ferrous metal with latex primer
MPI 107.
3.10
COATING SYSTEMS FOR CONCRETE AND CEMENTITIOUS SUBSTRATES
Apply coatings of Tables in Division 3, 4 and 9 for Exterior and Interior.
3.11
COATING SYSTEMS FOR WOOD AND PLYWOOD
a.
Apply coatings of Tables in Division 6 for Exterior and Interior.
b.
Prior to erection, apply two coats of specified primer to treat
and prime wood [and plywood] surfaces which will be inaccessible
after erection.
c.
Apply stains in accordance with manufacturer's printed
instructions.
[d.
Wood Floors to Receive Natural Finish: Thin first coat 2 to 1
using thinner recommended by coating manufacturer. Apply all
coatings at rate of 30 square meters per 4 liters 300 to 350
square feet per gallon. Apply second coat not less than 2 hours
and not over 24 hours after first coat has been applied. Apply
with lambs wool applicators or roller as recommended by coating
manufacturer. Buff or lightly sand between intermediate coats as
recommended by coating manufacturer's printed instructions.]
SECTION 09900
Page 39
Previous Page
