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Surface Preparation:
All surfaces to be painted MUST be properly prepared. Anything that could adversely
affect proper adhesion of the paint to the surface MUST be completely removed, including
powdering or chalky old paint. We recommend thorough water blasting/pressure cleaning
of all the surfaces to be repainted, using a minimum of 2,500 PSI water pressure at
the tip and a chlorine injection system to add chlorine to the water. If the pressure cleaning
equipment does not have a built-in chlorine injection system, you MUST pre-treat the wall
surfaces with chlorine (use 5% sodium hypochlorite) prior to pressure cleaning to kill
all mold, mildew and fungus spores (both visible and non-visible), so you do not drive live
spores into the pores of the surface when pressure cleaning. After pressure cleaning,
all surfaces MUST be completely free of all traces of mold, mildew, fungus and organic
growths and spores. NOTE: To TEST for proper cleaning, when the surface is dry, rub
the palm of your hand over the surface. If anything comes off the surface onto your hand,
the surface has NOT been properly cleaned and prepared for painting.
First Coat: (Prime Coat) on Masonry
A. If a "clear", non-pigmented primer is desired: SOMAY Product No. 777-00 - SOMAY "PST" ("Primer, Sealer, Topcoat") (Clear, non-
pigmented). A 100% acrylic resin, heavy-duty, industrial strength, all-purpose sealer,
primer, undercoater and surface conditioner. Ideal for masonry. Can be used over
wood also. Apply at the rate of 200 sq.ft./gal. on a smooth, non-porous surface. B. If a pigmented ("white") primer is desired:
SOMAY Product No. 530-01 (water clean-up) - SOMAY SURFACE CONDITIONER,
100% Acrylic Latex/Oil Emulsion (White). A primer, sealer, penetrant and binder, for light
powdering/chalking of old paint. Can be used over wood also. Apply at the rate of 332
sq.ft./gal. for a 2 mil dry film thickness on a smooth, non-porous surface. NOTE: It is
recommended that the prime coat NEVER be tinted to the same color as the finish coat ...
it should always be a distinctly different shade so you can see that the proper amount of
the top or finish coat has been applied over the prime coat.
Finish Coat: (Top Coat) on Masonry
A. For "Eggshell" Fungistatic Finish which Independent Laboratory Tests show to be the
most resistant to Mold, Mildew, and Fungus growth of any available paint, made in a
100% Acrylic Resin Formulation, use: SOMAY Product No. 8630 (water clean-up) SOMAY "STERI-SHIELD" Fungistatic Paint.
Heavy duty, industrial strength formulation. "Pure White" and Pastel Custom Colors.
Can be used over masonry, wood, direct to metal (DTM) etc. Apply at the rate of 367
sq.ft./gal. for a 2 mil dry film thickness on a smooth, non-porous surface. B. For a low Semi-Gloss Finish in a 100% Acrylic Resin System, use:
SOMAY Product No. 630 (water clean-up) "PREMIUM" 100% Acrylic Latex SEMI-
GLOSS ENAMEL, heavy-duty, industrial strength (White and full range of custom colors
available). Can be used over wood also. Apply at the rate of 306 sq.ft./gal. for a 2 mil
dry film thickness on a smooth, non-porous surface. C. For an "Eggshell"
Finish in a 100% Acrylic Resin System, use: SOMAY Product No. 383 (water clean-up) - "PREMIUM" 100% Acrylic Latex "Eggshell"
Finish (White and pastel custom colors available). Can be used over wood also.
Apply at the rate of 267 sq.ft./gal. for a 2 mil dry film thickness on a smooth, non-porous
surface. D. For Flat Finish on Masonry Walls, use:
1) SOMAY Product No. 358 (water clean-up) - "PREMIUM" "HIGH-HIDE" Vinyl
Acrylic Exterior/Interior Latex Flat (White). Apply at the rate of 263 sq.ft./gal. for a 2
mil dry film thickness on a smooth, non-porous surface. Offers one-coat
coverage, White over dark colors, including Black.
2) SOMAY Product No. 340 (water clean-up) - "PREMIUM VINYL ACRYLIC" ("PVA")
Exterior Latex Flat House Paint/Interior Latex Flat Wall Paint. (White, stock colors
and a full range of custom colors available). Apply at the rate of 207 sq.ft./gal.
for a 2 mil dry film thickness on a smooth, non-porous surface.
NOTES:. A 100% Acrylic Resin paint can be used on Masonry, primed or unprimed wood, and is
the most resistant to Ultraviolet Light (sun) degradation so that it will be the most durable system
in tropical climates.Vinyl/Acrylic Latex paints should NOT be used on unprimed wood surfaces.
However, Somay Product, No. 530, "Surface Conditioner" 100% Acrylic Latex Paint can be
used on primed or unprimed wood surfaces.
In order to achieve satisfactory results, please be sure to use each paint or coating as it is
provided by the manufacturer; do NOT thin. Thinning paint always reduces the percentage of
volume solids, reduces the percentage of resin solids, reduces the percentage of pigments, the
percentage of mildewcide, bactericide, fungicide, etc., which will adversely affect the durability,
hiding ability, etc. of the applied product. There is no such thing as a "good" one coat paint job. All "good" paint jobs require a minimum
of two (2) coats of paint! In order to achieve the best results, remember that two thin coats, 2 mils
(dry) thickness each, are always preferable to one thick coat.
All Somay "Premium" quality paints contain the MAXIMUM amount of mildewcide, bactericide
and fungicide allowed by law and EPA regulations to inhibit the growth of mildew on painted
surfaces.
The more Gloss or Sheen a coating has, the more durable, longer lasting, and the more
resistant it will be to dirt pick-up and mildew or fungus growth developing on the surface. However
a Gloss Finish may highlight surface imperfections, should there be any, whereas a Flat
Finish may help to camouflage surface imperfections. Coverage Rates (Theoretical vs. Actual)
All paint and coating coverage rates are theoretical
rates for "smooth, non-porous surfaces" (such as glass). Rough and/or porous surfaces will
reduce spreading rates and require the use of considerably more material. Furthermore,
allowance must be made for less than 100% transfer efficiency. Experienced paint and coating
applicators usually calculate a wastage rate of at least 10% for brush or roller applications,
and from 20% to 30% wastage rate for spray applications. This requires the purchase of
10% to 30% or more material than the theoretical amount in order to be sure to apply the proper
amount of material to develop the proper minimum dry coating thickness specified.
SP-101-2006 June, 2006
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