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New asphalt and new concrete must be cured a minimum of 28 Limitations and Requirements
days prior to application. Old asphalt/concrete must be free of If substrates are not clean and dry, Polycoat PC-IM 129 will not
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loose aggregate, dirt and be dry. New and old concrete should have good adhesion and the coating over concrete will blister.
be shot blasted, water blasted or abrasive blasted. Grease For concrete cleaning see General Guidelines. Concrete/
spots and oil should be cleaned with appropriate cleaners. asphalt: the outside temperature should be in a declining
mode (installation should be done in the late afternoon).
Note: To promote adhesion and minimize outgassing, recommended Coating should be applied at least 5°F (3°C) above the dew
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Polyprime primer should be used on all surfaces except for new
plywood, where it is optional. point. New concrete/asphalt and masonry must be cured for
28 days. Concrete must exhibit 3000 psi minimum strength.
PHASE 2: Concrete surfaces to be coated must be trowel finished in
Prime the required surfaces with Polyprime 2180SC for metal compliance with the American Concrete Institute (except
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or concrete surfaces or Polyprime U for asphalt surfaces at that hand troweling is not required), followed by a fine hair
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a rate of 1 gallon/300 sqft (0.14 liters/sqm) or 300 sqft/gallon. brooming, left free of loose particles, and shall be without
Apply using a brush or phenolic core roller. This will result in 5 ridges, projections, voids and concrete droppings that would
dry mils (127 microns) of coating. *Note: For rough or porous be mechanically detrimental to coating application or function.
concrete or when outgassing is a concern, use Polyprime
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EBF-LV at an approximate rate of 1 gallon/200 sqft (0.21 liters/ The only acceptable grade of plywood is APA rated exterior
sqm) or 200 sqft/gallon; this rate may vary on the porosity grade or better. The appearance and physical characteristics of
of the substrate. Allow primer to become tack free before the plywood and grade should be considered. Plywood should
proceeding to Phase 3. be new or cleaned and sanded (see general guidelines). UV
stable, but the color may fade, chalk and discolor over time.
PHASE 3:
The first coat of Polycoat PC-IM 129 (a mixture of Side-A and Coverage rates recommended are based on lab condition;
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Side-B) should be applied at a rate of 2 gallons/100 sqft (0.82 applied at 75°F (24°C) ambient temperature and are intended
liters/sqm) or 50 sqft/gallon resulting in 29 ± 2 dry mils (737 to be minimum coverage rates are exclusive of additional
± 51 microns) of membrane. For roofs, ponds and reservoirs, amounts needed to fill potholes, spallings, scalling, rough and
immediately embed scrim where required into 10-15 mils irregular surfaces. Porosity and roughness of the substrate,
(2.54 -3.81 microns) of wet coating, overlapping each edge a aggregate size, and product temperature will affect coverage
minimum of 1 inch (2.54 cm). Use a dry phenolic core roller rates. Material mil thickness rates are calculated on theoretical
to press the scrim into the coating, creating a bond between coverage for a smooth substrate and do not account for
the coating and the scrim. the actual texture or substrate conditions in the field or at
the time of application. Sample mockups on the projects
On other substrates, skip scrim and proceed to Phase 4. Allow are recommended to determine the exact coverage rates
to cure (to touch) before proceeding to Phase 4.
necessary to waterproof the deck to acceptable standards.
PHASE 4: Equipment should be cleaned with a urethane grade
Apply the second coat of Polycoat PC-IM 129 (mixture of environmentally safe solvent, as permitted under local
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Side-A and Side-B) at the rate of 2 gallons/100 sqft (0.82 liters/ regulations, immediately after use. Uncured materials
sqm) or 50 sqft/gallon resulting in 29 ± 2 dry mils (737 ± 51 are sensitive to heat and moisture. The substrate must be
microns) of membrane. structurally sound and sloped for proper drainage. Polycoat
Products assumes no liability for substrate defects. Field visits
FINISHED SYSTEM: by Polycoat Products personnel are for the purpose of making
When applied as directed, the Polycoat PC-IM 129 technical recommendations only and are not to supervise or
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waterproofing system will provide 58 dry mils (1473 provide quality control on the job site.
dry microns), exclusive of fabric or topcoat, of superior
waterproofing. Any optional adhesion test is to be performed The following conditions must not be coated with Polycoat
seven days after product application. Products deck coating systems or products: on grade slabs,
split slabs with buried membrane, sandwich slabs with
insulation, slabs over unvented metal pan, swimming pools,
RECOAT: magnesite, lightweight concrete. Asphalt surfaces and asphalt
At 75°F (24°C) and 50% relative humidity, recoating and overlays may be coated with Polycoat decking systems if first
multiple or second coats must be completed within eight (8) coated with the Polycoat® PC-IM 129. Do not apply Polycoat
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hours of previous applications of Polycoat PC-IM129. After PC-IM 129 in wet weather or if rain is imminent. Coating should
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this eight (8) hour window, it is necessary to abrade, clean not become wet within 4 hours after application. Containers
and prime surface prior to recoating. that have been opened must be used as soon as possible. Do
not dilute under any circumstance.
Abrading shall be by grinder or other mechanical means.

SCRIM: Warning
Optional: Use Tietex T272 Polyester Scrim or equal. The products in this system contain Isocyanates and Solvent.

POLYCOAT PRODUCTS TEL 562.802.8834 | FAX 562.921.7363 Section 4.1
wpsales@polycoatusa.com | www.polycoatusa.com