Page 56 - Polycoat 1.1 Table of Contents
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Prime all joints, cracks, flashings with approved primers as   kg/sqm) or as required to achieve a slip-resistant finish. This
        specified below in Phase 2. Apply a two-part paste consisting   coat will result in an additional 14 ± 2 dry mils thick membrane,
        of PC-220SC and PC-50 over all joints, cracks, and flashing.   exclusive of aggregate.
        Mixing ratio is a ½ pint of PC-50 to 1 gallon of PC-220SC (0.24
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        liters per 3.78 liters) or 1 quart PC-50 to 5 gallons of PC-220SC   Backroll the aggregate into the wet Poly-I-Gard  246SC topcoat
        (0.9 liter to 18.9 liters). A manufacturer approved single or   and allow to cure overnight before exposing the completed
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        two-component polyurethane sealant may also be used to   Polydeck  MR (Mechanical Room) system to pedestrian traffic.
        bridge joints, cracks and flashings. Do not mix more material   Poly-I-Gard  295 may be substituted for Poly-I-Gard  246SC.
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        than can be used in 20 minutes. Bridge the joints, cracks, and   Apply topcoat of Poly-I-Gard  295 at 1 gallon/100 sqft or 100
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        flashings with 4” (10.2 cm) Straight Jacket Tape, pushing it   sqft/gallon resulting in a 14 ± 2 dry mil  (357 ± 50 dry microns)
        into the paste with a trowel. Over Straight Jacket Tape, apply   thickness. Immediately broadcast washed, dry, rounded sand
        a stripe coat of the PC-220SC and PC-50 mixture and taper it   20 mesh into the wet coating at a rate of 10lbs/100 sqft  (0.5
        onto the adjacent surface. All cracks in concrete substrates   kg/sqm) as required to achieve a slip-resistant finish and back
        must be treated per Polycoat Architectural Details. Allow the   roll the aggregate into the wet coating.
        surface to cure for 6 to 8 hours.
                                                              FINISHED SYSTEM:
        PHASE 2:                                              When applied as directed, the Polydeck  MR (Mechanical
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        Substrates other than new plywood are to be primed. Primer   Room) system will provide 48 ± 5 dry mils (1228 ± 125 dry
        is optional for new plywood. Metal and concrete which have   microns),and 56 ± 5 dry mils (1422 ± 125 dry microns) with
        been cleaned should be primed with Polyprime  2180SC at   broadcast sand, of superior waterproofing protection. Requires
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        a rate of 1 gallon (mixture of Part-A & Part-B)/300 sqft (0.14   a continuous coating application to minimize lines and/or
        liters/sqm) or 300 sqft/gallon. Apply using a brush or phenolic   streaking. Any optional adhesion test is to be performed seven
        core roller. This will result in a 3 dry mils (76 microns) thick   days after product application.
        membrane.
                                                              Limitations
        Note: For rough or porous concrete or when outgassing is a concern,
        use Polyprime  EBF-LV at an approximate rate of 1 gallon/200 sqft (0.21   The following conditions must not be coated with Polycoat
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        liters/sqm) or 200 sqft/gallon; this rate may vary on the porosity of   Products deck coating systems or products: on grade slabs,
        the substrate. Allow primer to become tack free before moving unto   split slabs with buried membrane, sandwich slabs with
        the Coating Application. The point at which the primer is deemed tack   insulation, slabs over unvented metal pan, magnesite, or
        free is when the primer passes thumbprint test. The thumbprint test is   concrete with a structural integrity less than 3000 psi. Asphalt
        defined by when a thumbprint is left in the primer and primer does not   surfaces and asphalt overlays may be coated with Polycoat
        transfer to the thumb. If the primer has been allowed to remain tack
        free for more than 12 hours, it is necessary to solvent wipe surface   decking systems if first coated with the Polycoat™ PC-IM 129.
        with VOC-compliant solvent and re-prime the surface.
                                                              Concrete must exhibit 3000 psi minimum strength. Concrete
        PHASE 3:                                              surfaces to be coated must be trowel finished in compliance with
        Apply PC-220SC to substrate at a rate of 2 gallons/100 sqft or   the American Concrete Institute (except that hand troweling
        50 sqft/gallon. This coat will result in a 28 ± 2 dry mils (711 ±   is not required), followed by a fine-haired brooming, left free
        51 microns) thick membrane. For best results, use a 1/8” (0.32   of loose particles, and shall be without ridges, projections,
        cm) notched trowel or notched squeegee. A 3/8” (0.965 cm)   voids and concrete droppings that would be mechanically
        nap phenolic core roller may be used but extra care should be   detrimental to coating application or function.
        taken to prevent air bubbles. Allow PC-220SC to cure before
        proceeding to Phase 4.                                New concrete must be cured for 28 days. Concrete cleaning
                                                              (see General Guidelines). Polycoat Products coating systems
        Poly-I-Gard  295 may be substituted for PC-220SC. Apply Poly-  should not be subjected to rising water tables or hydrostatic
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        I-Gard  295 at 2 gallons/100 soft or 50 sqft/gallon, resulting in   pressure on slab-on-grade decks. The only acceptable grade of
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        a 30 ± 2 dry mils (762 ± 51 microns).
                                                              plywood is APA rated exterior grade or better. The appearance
        Note: Polycoat basecoats should be applied the same day as the   and physical characteristics of the plywood and grade should
        primer to avoid missing the primer recoat window. If this is not   be considered. Plywood should be new or cleaned and sanded
        possible, broadcast heavy with aggregate into the primer to aid in   (see General Guidelines). The coating should be applied at
        the adhesion of the basecoat to the primer. Do not exceed recoat   least 5°F (3°C) above the dew point.
        window of 12 hours after cure and if recoat window is passed, then
        solvent wipe the surface with VOC-compliant solvent and re-prime   Coverage rates recommended are based on lab conditions,
        before proceeding with the next coat/phase.
                                                              applied at 75°F (24°C) ambient temperature and are intended
        PHASE 4:                                              to be minimum coverage rates on clean, smooth plywood, and
        Apply a topcoat of Poly-I-Gard  246SC over the entire surface   are exclusive of additional amounts needed to fill potholes,
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        at a rate of 1 gallon/100 sqft or 100 sqft/gal. Immediately   spalling, scaling, rough and irregular surfaces.  Porosity and
        broadcast washed, dry, rounded sand, 20 mesh (1.19 mm),   roughness of the substrate, aggregate size, and product
        6.5+ Mohs minimum hardness at a rate of 10 lbs/100 sqft (0.5   temperature will affect coverage rates. Material mil thickness


        POLYCOAT PRODUCTS TEL 562.802.8834  |  FAX 562.921.7363                                          Section 2.11
        wpsales@polycoatusa.com  |  www.polycoatusa.com
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