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Deck Type 1 Concrete Decks

Deck Description: Min. 3000 psi

System Type A(4): Poly-I-Gard 575FR or Flexideck B-306 Waterproofing System Under Tile

Substrate Surface must be clean, dry and sound with an open texture. Remove dust, laitance, grease,
Preparation: curing compounds, bond inhibiting impregnations, waxes, and any other contaminants. All
projections, rough spots, etc. should be dressed off to achieve a level surface prior to the
application.

All concrete should be cleaned and prepared to achieve a laitance and contaminant free, open
textured surface by blast cleaning or equivalent mechanical means (CSP 3-4 per ICRI
guidelines).

Primer: Apply Polyprime 2180SC or Enviro-Grip EP#2SC with an airless sprayer, brush, or phenolic
resin core roller at approximately 300 sqft/gal. and work well into the substrate to ensure
adequate penetration and sealing and puddles are avoided. Allow primer to dry tack free.
Base coat must be applied within 8-12 hours of primer application.

2
Base Coat: PC-260 or B-Tuff 306 should be applied at 66 ft /gallon using a notched squeegee or trowel
and back roll using a phenolic resin core roller. Extend base coat over entire area including
previously detailed cracks and control joints. Allow coating to cure a minimum of 2-4 hours
between coats at 75°F and 50% RH.

2
Intermediate Coat: Poly-I-Gard 295 or Topshield 5600 should be applied at 83 ft /gallon using a notched
squeegee or trowel. Apply 20 mesh silica sand* evenly distributed at the rate of 40 - 50
2
lbs/100 ft broadcast to refusal - seeded immediately into wet coating and backrolled. Allow
coating to cure a minimum of 16 hours at 75°F and 50% RH or until tack free between coats,
then remove any loose aggregate.

Overburden: Nominal 12” x 12” x 1/4” glazed ceramic tile attached with thin-set mortar complying with
ANSI A118.11 applied with 1/4” notched trowel.

Integrity Test: Required, and shall be performed in accordance with ASTM D 5957 by an approved lab.
Water may be maintained for a period longer than 24 hours if required.

Inspection: Contractor and a representative of the membrane manufacturer shall inspect the waterproofing
assembly and notify the contractor of any defects. All defects shall be corrected.

Maximum Design
Pressure: -502.5psf (See General Limitation #9)

NOA No.: 21-1207.01
Expiration Date: 05/11/28
Approval Date: 05/11/23
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