SECTION 07572 
TRAFFIC-BEARING ROOF DECK SURFACING 
Glass Reinforced Acrylic Resinous Type 
Miracote Miraflex Decking System

PART 1.00 GENERAL 
1.01 GENERAL REQUIREMENTS 
Work of this Section as shown or specified shall be in accordance with the requirements of the Contract Documents. 
1.02 WORK INCLUDED 
Work of this Section includes all labor, materials, equipment and services necessary to complete the waterproof acrylic resin composition traffic bearing roof deck surfacing as scheduled on the drawings and/or specified herein. 
1.03 RELATED WORK 
Concrete – Section 03300. 
( Note to Specifier: Concrete slab should be either water cured or cured using sodium silicate curing compounds only. Other types of curing compounds are generally not acceptable. Concrete should be cured for a minimum of 28 days with a maximum moisture content of 7%. Lightweight concrete topping slabs should not contain lightweight aggregates such as gypsum or vermiculite. Structural concrete and concrete topping shall include expansion joints which shall be filled with Miracote Miraflex Filler Compound joint filling compound or approved equal. Minimum pitch of 1/8 inch per foot. Covering on-grade floors is generally not recommended; however, if doing so, should have vapor retarder beneath slab, and slab should be properly vented. Consult Crossfield Products Corp.). 
Floor drains - Division 15. 
(Note to Specifier: Floor drains, clean-outs, etc. should be of the "floor-flange" type as manufactured for use with composition floors by most major drain manufacturers. Drain flange shall be finished flush with substrate.) 
Insulation, vapor barrier and protective waterproofing 
(Consult Crossfield Products Corp. for specific recommendation) 
Sheet metal flashing 
(Note to Specifier: Sheet metal flashing shall be minimum 26 gauge galvanized. All joint or seams shall be overlapped approx. 3" and caulked with Dex-O-Tex Elastatex 500 flashing paste or approved equal.) 
Plywood substrate including framing and blocking 
(Note to Specifier: Plywood shall be a minimum 5/8 inch (preferably 3/4 inch) exterior grade plugged and sanded or filled with Dex-O-Tex G-26 Underlayment. Plywood shall be supported 16" on center and properly blocked. Plywood shall be attached with either screws, screw type or ring shank nails.) 
Slope for drainage 
(Note to Specifier: Slope of 1/4 inch per horizontal foot to drain is recommended, with the minimum allowable slope to drain of 1/8 inch per horizontal foot. (A slope to drain of less than 1/4 inch per horizontal foot may result in water ponding on the deck surface). Allow minimum 1/8 inch per foot slope to drain. This can be provided for in the substrate or by application of Dex-O-Tex G-26 Underlayment. Care must be taken to provide adequate elevation at thresholds to provide proper slope to drain.) 
Wall vents 
(Note to Specifier: Wall vents are used to relieve moisture vapor transmission pressure from beneath the waterproof membrane of the waterproof deck covering system. Moisture vapor commonly collects in areas below a vapor barrier such as the waterproof membrane of the deck covering system.
1.04 SUBMITTALS 
General: Submit the following in accordance with Conditions of Contract and Division 1 Specification Sections. 
Product Data: Submit manufacturer's technical data, application instructions and general recommendations for the waterproof acrylic resin composition traffic bearing roof deck surfacing specified herein. 
Samples for initial selection purposes in form of manufacturer's color charts showing full range of colors and finishes available. 

Submit 2-1/2" x 4" samples of color chips from color chart selection designated by the Architect. 

Material certificates signed by manufacturer certifying that the waterproof acrylic resin composition traffic bearing roof deck surfacing complies with requirements specified herein. 
Maintenance Instructions: Submit manufacturer's written instructions for recommended maintenance practices. 
Provide a copy of I.C.B.O. test report stating that the proposed neoprene composition traffic bearing roof deck system is Class A Fire Rated, and has met all I.C.B.O. criteria for walking decks. 
1.05 QUALITY ASSURANCE 
Installer Qualifications: Engage an experienced Installer or applicator who has specialized in installing waterproof deck covering system types similar to that required for this Project and who is acceptable to manufacturer of primary materials. 
Single-Source Responsibility: Obtain waterproof acrylic resin composition traffic bearing roof deck surfacing materials, including primers, resins, hardening agents, and finish or sealing coats, from a single manufacturer. 
Pre-Qualified Materials: Submit any request for alternative products for review two weeks prior to bid date. Any request for alternate products received after this date will not be considered. 
1.06 DELIVERY, STORAGE AND HANDLING 
Deliver materials in original packages and containers with seals unbroken and bearing manufacturer's labels containing brand name and directions for storage and mixing with other components. 
Comply with manufacturer's directions for materials storage to prevent deterioration from moisture, heat, cold, direct sunlight, or other detrimental effects. 
1.07 PROJECT CONDITIONS 
Environmental Conditions: Comply with waterproof neoprene composition traffic bearing roof deck surfacing manufacturer's directions for maintenance of ambient and substrate temperature, moisture, humidity, ventilation, and other conditions required to execute and protect work. 
PART 2.00 PRODUCTS 
2.01 MATERIALS 
Troweled waterproof acrylic resin composition traffic-bearing roof deck surfacing shall be Miracote Miraflex as manufactured by Crossfield Products Corp.; Rancho Dominguez, California; Roselle Park, New Jersey; Hinsdale, Illinois and Tacoma, Washington. 
The trowel applied waterproof acrylic resin composition traffic bearing roof deck surfacing system shall be composed of a 3/4-oz. loose woven fiberglas reinforced waterproof membrane, traffic surfacing and finish coats, and shall conform to the following standards: 

1.) Traffic deck binder membrane emulsions shall be compounded in compliance with acrylic resin liquid standards. 
2.) Fabric used as reinforcement for waterproof flashing and deck membrane shall be 3/4-oz. loose woven fiber glas mat approved by the resin manufacturer. 
3.) For texture coats, texturing additive shall be mixed in the traffic coat. 
4.) Texture traffic bearing body coat shall be a single component, water phase acrylic latex emulsion with suspended thickening aggregates. 
5.) Final Finish dressing shall be a single component, water-phase acrylic latex emulsion material, pigmented and of a consistency suitable for roller application
2.02 PROPERTIES 
Colors: As indicated, or if not otherwise indicated, as selected by Architect from manufacturer’s standard colors. 
PHYSICAL CHARACTERISTICS AND TECHNICAL DATA(Independent Certified Testing) 
a. 	Typical Installed Thickness:	
	Miraflex Decking System:	3/32" (2.4mm)	
	When installed over plywood with Miracote Repair Mortar underlayment: 	1/4" (6.3mm)	
 	 	 	
b. 	Physical Properties:	Elongation Break:	
	Tensile Strength (ASTM D-412)	30%	
	Elongation (ASTM D-412)	1520 psi	
 	 	10.5MPa	

Testing of un-supported Miraflex at 20 inches/minute:	
Peak Tensile:	113 psi	
Break Tensile:	96 psi	
% Elongation:	458%	
 	 	 	
Tensile Test (ASTM D-2707):	psi	Elongation	
Longitudinal Direction:	1390.7	54.2%	
Traverse Direction:	1105.9	46.5%	

Bond Strength Test (ASTM D-297):	
Plywood Substrate: 100% Cohesive Failure of Plywood	Average psi 97.12	
Concrete Substrate: 100% Cohesive Failure of Concrete	Average psi 9.6	
Water Vapor Transmission Test:	
(ASTM-E96, Dry Cup Method) Grams/24 hours per meter squared:	Average 2.883	
 	 	
Abrasion Test (ASTM D-1242):	
ICBO/ES AC-39	
Abrasive Grit No. 80 Aluminum Oxide	
     Thickness Loss:	0.014 inches average	
     Percent Loss: 	1.97% average	
 	 	
Percolation Test:	
ICBO/ES AC-39		
Percolation Column Height	permitted value 0.5 inch	
 	Miraflex: 0.26 inch	
 	 	
Impact Test: 2 pound steel ball	
Test sample on 5/8" plywood substrate	Passed 12 foot-pound impact	
 	No Cracking	
 		
Weight per Square Foot:	
Miraflex Decking System	3.8 oz.	
Miraflex Decking with Repair Mortar	2 lbs., 13.4 oz.	
 	 	
Coefficient of Friction):	
ASTM D-24047-82 (Lab No. T-96-183)	Test results Average: 1.19	
 	Exceeds ADA Requirements	

2.03 SUPPLEMENTAL MATERIALS 
Optional Decorative Finishes: Type recommended or produced by manufacturer of waterproof acrylic resin composition traffic bearing roof deck surfacing system to achieve desired color, texture, pattern and finish 
(Note to Specifier: The use of a decorative finish is optional and is available in numerous finishes. The decorative finish of the decking system will vary depending on installation technique and inherent properties of various fillers and aggregates which may be incorporated in finish system. It is essential to chose the proper finish required for your specific application. Once a pattern, texture and colors are selected, approved submittal samples will accurately depict the actual final finish of the decorative waterproof deck covering system.All areas to receive other than standard finishes shall be clearly shown on plans and finish schedules.)

PART 3.00 - EXECUTION 
3.01 CONTRACTOR QUALIFICATIONS 
Traffic-bearing roof deck covering shall be installed in strict accordance with the manufacturer's recommendations by a contractor trained and approved by the manufacturer an have a minimum five years experience in the application of the materials. 
3.02 INSPECTION 
Examine the areas and conditions where the waterproof acrylic resin composition traffic bearing roof deck surfacing is to be installed and notify the Architect of conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected by the Contractor in a manner acceptable to the Architect. 
Evaluate level of moisture in the substrate to determine that moisture levels are acceptable for application of specified waterproof deck covering system. 
303 PREPARATION 
Substrate: Perform preparation and cleaning procedures according to waterproof deck covering manufacturer's instructions for particular substrate conditions involved, and as specified. Provide clean, dry and neutral substrate for application of waterproof deck covering. 
Materials: Mix aqueous emulsions and aggregate when required as per manufacturer's instructions. Prepare materials according to waterproof deck covering system manufacturer's instructions. 
3.04 FIELD CONDITIONS 
Traffic-bearing roof deck covering shall not be applied during either freezing or inclement weather, or when such weather can logically be expected. 
3.05 APPLICATION 
General: Apply each component of waterproof acrylic resin composition traffic bearing roof deck surfacing system according to manufacturer's directions to produce a uniform monolithic surface of thickness indicated. 
Apply latex filler coat when required. 
Apply reinforced membrane at all vertical junctures. Embed 3/4-oz. fiber glas mat fabric into acrylic resin primer/membrane liquid. 
Finished acrylic resin composition traffic-bearing roof deck surfacing shall be a nominal 1/16 inch thick, smooth and uniform in color and texture. 
3.05 (Alternate) APPLICATION 
Optional Proprietary Application:	
Installation: Acquire and follow Miracote Miraflex application Specification No. 120. All Miracote materials to be supplied to the job site in fresh unopened manufacturer’s containers.	

Apply Miracote Miraflex Filler as required. 
Over plywood, install metal lath** 
Install Miracote Repair Mortar to cover lath** 
Install Miracote Fiberglass Reinforcing Fabric 
Saturate Fiberglass Reinforcing Fabric with Miracote Miraflex Primer Laminating Coat (I) 
Using hopper, apply Miracote Miraflex Decking Bodycoat (II) Texture Coat 
Apply topcoat by roller using Miracote Miraflex Decking Sealer (III) 
Apply optional protection coat Miraseal Clear 
3.06 CURING, PROTECTION AND CLEANING 
Cure waterproof acrylic resin composition traffic bearing roof deck surfacing materials according to manufacturer's directions, taking care to prevent contamination during application stages and before completing curing process. Close application area for a minimum of 24 hours. 

END OF SECTION