Deck Flex

CSI MasterFormat Specifications

Division 07 00 00 – Thermal and Moisture Protection
Section 07 18 13 – Pedestrian Traffic Coatings

For Architects, Engineers & Specifiers

These specifications follow CSI SectionFormat and can be incorporated directly into your project documentation. Both systems are ICC-ES listed and meet building code requirements for fire-rated waterproofing.

New to ICC-ES evaluations? Learn about AC39 Walking Deck Acceptance Criteria and why it matters for your projects.

Deck Flex W.M. Walking Deck and Roof Covering System

Section 07 18 13

Class A Fire-Rated

For plywood walking decks and roof decks requiring Class A fire rating. ICC-ES listed for superior protection.

→ View Full Specification

Deck Flex W.F. Walking Deck and Roof Covering System

Section 07 18 13

Class B Fire-Rated

For plywood or concrete decks in residential and light commercial applications. Versatile and cost-effective.

→ View Full Specification

DIVISION 07 00 00 – THERMAL AND MOISTURE PROTECTION

SECTION 07 18 13

PEDESTRIAN TRAFFIC COATINGS

Deck Flex W.M. Walking Deck and Roof Covering System (Class A Fire-Rated)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

  • Class A fire-rated waterproofing system for pedestrian deck surfaces over plywood substrate
  • Multi-layer cementitious waterproofing with fiberglass reinforcement
  • Metal lath reinforcement, base coat, and topcoat finish
  • Optional flashing components for perimeter and transitions

B. Related Sections:

  • Section 06 10 00 - Rough Carpentry (plywood substrate)
  • Section 07 92 00 - Joint Sealants
  • Section 09 96 00 - High-Performance Coatings

1.2 REFERENCES

A. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials

B. ICC-ES Evaluation Report - ESR-3672

C. International Building Code (IBC) - Current edition adopted by jurisdiction

D. ASTM D412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension

1.3 ADMINISTRATIVE REQUIREMENTS

A. Preinstallation Meeting: Conduct meeting at project site to review installation procedures and project conditions.

B. Installer Qualifications: Company specializing in waterproofing with minimum 5 years experience installing cementitious deck systems.

1.4 SUBMITTALS

A. Product Data:

  • Manufacturer's technical data sheets for each system component
  • Coverage rates and application instructions
  • Safety Data Sheets (SDS)

B. Shop Drawings:

  • Layout drawings showing system application areas
  • Detail drawings for transitions, penetrations, and terminations
  • Flashing details at perimeters and wall intersections

C. Test Reports:

  • ASTM E84 fire rating test results (Class A)
  • ICC-ES Evaluation Report ESR-3672
  • Laboratory test reports for system components

D. Samples:

  • 6-inch square samples showing completed system with specified topcoat color
  • Samples of flashing materials

E. Warranty: Submit manufacturer's standard warranty

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications:

  • Manufacturer with minimum 35 years experience in waterproofing systems
  • Deck Coating Products, Inc. (Deck Flex), established 1985
  • Products manufactured in USA

B. Installer Qualifications:

  • Licensed contractor in jurisdiction where work is performed
  • Trained in application of specified waterproofing system
  • Minimum 5 years experience installing waterproofing systems
  • Minimum 3 completed projects of similar scope and complexity

C. Fire-Test-Response Characteristics:

  • Flame Spread Index: 0-25 (Class A) per ASTM E84
  • Smoke Developed Index: 0-450 per ASTM E84

D. Regulatory Requirements:

  • Comply with ICC-ES Evaluation Report ESR-3672
  • Meet requirements of International Building Code (IBC)
  • Comply with local building code amendments

1.6 DELIVERY, STORAGE, AND HANDLING

A. Delivery:

  • Deliver products in original, unopened containers with labels intact
  • Verify containers are sealed and undamaged

B. Storage:

  • Store materials in dry, temperature-controlled environment
  • Protect from moisture, direct sunlight, and freezing temperatures
  • Storage temperature range: 40°F to 90°F (4°C to 32°C)
  • Elevate materials off ground on pallets

C. Handling:

  • Handle materials to prevent damage to containers and contents
  • Use proper lifting techniques for heavy containers

1.7 PROJECT CONDITIONS

A. Environmental Requirements:

  • Ambient air temperature: 45°F to 100°F (7°C to 38°C)
  • Substrate temperature: 45°F to 100°F (7°C to 38°C)
  • Relative humidity: Less than 90%
  • Do not apply when rain is expected within 24 hours
  • Do not apply when substrate is wet or damp
  • Protect work from rain for minimum 24 hours after application

B. Substrate Conditions:

  • Substrate must be clean, dry, and free of contaminants
  • Plywood must be structural grade, minimum 5/8" thick
  • Maximum moisture content: 19% by weight
  • Substrate must be structurally sound and properly sloped for drainage (minimum 1/4" per foot)

1.8 WARRANTY

A. Manufacturer's Warranty: Deck Coating Products, Inc. (Deck Flex) provides a 10-year product warranty when system is installed by qualified applicator in accordance with manufacturer's specifications. Warranty covers materials against defects in workmanship and materials under normal use and service conditions.

B. Installer's Warranty: Provide workmanship warranty for period specified in contract documents.

C. Warranty Conditions:

  • System must be installed by applicator with minimum 5 years experience
  • Installation must comply with manufacturer's published specifications
  • Substrate must be properly prepared and meet manufacturer's requirements
  • Regular maintenance must be performed as recommended by manufacturer

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturer:

Deck Coating Products, Inc. (Deck Flex)

5722A Research Dr

Huntington Beach, CA 92649

Website: deckflex.com

Phone: (888) 929-8624

Email: deckflex@deckflex.com

B. Substitutions: Not permitted. System is specified based on ICC-ES evaluation and fire testing of complete assembly.

2.2 DECK FLEX W.M. WALKING DECK AND ROOF COVERING SYSTEM COMPONENTS

A. Metal Lath Reinforcement:

  • Product: Deck Flex Pro Metal Lath
  • Material: Galvanized steel, expanded metal, 2.5 lb per square yard
  • Coverage: 18.7 square feet per sheet
  • Fasteners: No. 16 gauge staples, 1" crown, 5/8" long legs
  • Fastener density: 22-24 staples per square foot

B. Fiberglass Reinforcement:

  • Product: Deck Flex Pro Fiberglass
  • Weight: 3/4 ounce per square yard (25.4 g/m²)
  • Width: 50 inches
  • Roll Size: 1,800 square feet
  • Type: Woven fiberglass fabric

C. Cementitious Base Layer - Troweled:

  • Product: Deck Flex TetraCrete TC #3 Troweled (Grey)
  • Composition: Proprietary polymer-modified cementitious blend
  • Type: Polymer-modified cementitious coating
  • Bag Size: 50 pounds
  • Coverage: Maximum 50 square feet per bag (45-50 lbs Deck Flex TetraCrete TC #3 (Grey) mixed with 1 gallon additive)
  • Application: Trowel applied
  • Color: Grey

D. Cementitious Top Layer - Sprayed:

  • Product: Deck Flex TetraCrete TC #2 Sprayed (White)
  • Composition: Proprietary polymer-modified cementitious blend
  • Type: Polymer-modified cementitious coating (texture coat layer)
  • Bag Size: 50 pounds
  • Coverage: 90-100 square feet per gallon when spray applied
  • Application: Spray applied
  • Color: White

E. TetraCrete Additive:

  • Product: Deck Flex TetraCrete Additive
  • Type: Liquid polymer additive
  • Ratio: 1 gallon per 1 bag of TetraCrete
  • Container: 5-gallon buckets
  • Function: Enhances adhesion, flexibility, and waterproofing properties

F. Base Coat:

  • Product: Deck Flex Base Coat
  • Type: Elastomeric acrylic polymer coating
  • Coverage: 60-75 square feet per gallon
  • Dry Thickness: 1/16 inch
  • Container: 5-gallon buckets
  • Function: Provides additional waterproofing and prepares surface for topcoat

G. Top Coat:

  • Product: Deck Flex Top Coat
  • Type: Elastomeric acrylic polymer finish coat
  • Coverage: 150-180 square feet per gallon (for 2 coats combined)
  • Container: 5-gallon buckets
  • Colors: Specify color selection from manufacturer's color chart
  • Finish: Textured, slip-resistant

H. Edge Flashing (Optional):

  • Product: 3x2 Bonderized Edge Flashing
  • Material: Galvanized steel with zinc coating
  • Size: 3" vertical x 2" horizontal legs
  • Length: 10 feet per piece

I. Deck-to-Wall Flashing (Optional):

  • Product: 8" Deck-to-Wall Flashing
  • Material: Galvanized steel
  • Width: 8 inches
  • Length: 10 feet per piece

J. Sealant:

  • Type: Polyurethane or silicone sealant
  • Use: Sealing joints, terminations, and penetrations
  • Color: To match topcoat finish

K. Patching Compound (Optional):

  • Product: Deck Flex Patching Compound
  • Type: Polymer-modified repair material
  • Use: Filling cracks, voids, and surface imperfections

2.3 PERFORMANCE CHARACTERISTICS

A. Fire Rating: Class A per ASTM E84

  • Flame Spread: 0-25
  • Smoke Developed: 0-450

B. ICC-ES Evaluation: ESR-3672 (reissued May 2024)

  • Complies with IBC 2021, 2018, 2015, 2012, 2009, 2006
  • Subject to renewal April 2025

C. Physical Properties:

  • System Thickness: Approximately 1/4 inch
  • System Weight: Approximately 1.6 lbs per square foot

D. Waterproofing: Complete system provides waterproof barrier when installed per manufacturer's instructions

E. Tensile Strength: Per ASTM D412 testing

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify Substrate Conditions:

  • Substrate is clean, dry, and free of contaminants
  • Plywood is structural grade, minimum 5/8" thick
  • All fasteners are flush or countersunk
  • Joints and cracks are properly prepared
  • Substrate is properly sloped for drainage
  • Substrate moisture content does not exceed 19% by weight

B. Do Not Proceed: Do not begin installation until unsatisfactory conditions are corrected.

3.2 PREPARATION

A. Clean Substrate:

  • Remove all dirt, dust, oil, grease, and loose materials
  • Ensure surface is dry before proceeding

B. Repair Defects:

  • Fill cracks, voids, and surface irregularities with patching compound
  • Allow repairs to cure before proceeding
  • Countersink or remove protruding fasteners

C. Install Flashing:

  • Install perimeter and wall flashing as detailed in drawings
  • Secure flashing with appropriate fasteners
  • Seal all joints and terminations

3.3 INSTALLATION - DECK FLEX W.M. WALKING DECK AND ROOF COVERING SYSTEM

A. Metal Lath Installation:

  1. Fasten metal lath to plywood substrate using No. 16 gauge staples, 1" crown, 5/8" long legs
  2. Install staples at density of 22-24 staples per square foot
  3. Overlap adjacent lath sheets minimum 1/2 inch
  4. Ensure lath is flat and in full contact with substrate
  5. Cut lath to fit around penetrations and at perimeters

B. Deck Flex TetraCrete TC #3 (Grey) Application (Troweled Base):

  1. Mix 45-50 lbs of Deck Flex TetraCrete TC #3 (Grey) (1 bag) with 1 gallon of TetraCrete Additive
  2. Mix thoroughly to achieve uniform, lump-free consistency
  3. Apply over metal lath using trowel
  4. Coverage: Maximum 50 square feet per mix (45-50 lbs Deck Flex TetraCrete TC #3 (Grey) + 1 gallon additive)
  5. Ensure complete coverage and embedment of metal lath
  6. Work time: Use mixed material within manufacturer's specified pot life
  7. Allow to cure minimum 24 hours before next layer

C. Fiberglass Membrane Installation:

  1. Apply fiberglass while Deck Flex TetraCrete TC #3 (Grey) is still wet (within 30 minutes of application)
  2. Unroll fiberglass over wet Deck Flex TetraCrete TC #3 (Grey)
  3. Overlap seams minimum 2 inches
  4. Embed fiberglass into Deck Flex TetraCrete TC #3 (Grey) using trowel or roller
  5. Ensure complete saturation and no air pockets
  6. Remove wrinkles and ensure flat, smooth surface

D. Deck Flex TetraCrete TC #2 (White) Application (Sprayed Texture Coat):

  1. Allow Deck Flex TetraCrete TC #3 (Grey) and fiberglass to cure minimum 24 hours
  2. Mix one bag of Deck Flex TetraCrete TC #2 (White) with 1 gallon of TetraCrete Additive
  3. Mix thoroughly to achieve sprayable consistency
  4. Apply using approved spray equipment
  5. Coverage: 90-100 square feet per gallon when spray applied
  6. Apply in uniform coat to completely cover fiberglass
  7. Allow to cure minimum 24 hours before next coat

E. Base Coat Application:

  1. Allow TetraCrete layers to fully cure (minimum 24 hours per layer)
  2. Stir Base Coat thoroughly before use
  3. Apply using brush, roller, or approved spray equipment
  4. Coverage: 60-75 square feet per gallon
  5. Dry Thickness: 1/16 inch
  6. Apply in uniform coat ensuring complete coverage
  7. Allow to dry per manufacturer's specifications (typically 4-6 hours) before topcoat application

F. Top Coat Application:

  1. Stir Top Coat thoroughly before use
  2. Apply first coat using brush, roller, or approved spray equipment
  3. Coverage: 150-180 square feet per gallon total for both coats
  4. Allow first coat to dry per manufacturer's specifications (typically 4-6 hours)
  5. Apply second coat perpendicular to first coat for uniform coverage
  6. Maintain wet edge during application
  7. Final texture should be uniform and slip-resistant
  8. Protect from traffic and moisture for minimum 24 hours

3.4 FLASHING INSTALLATION (OPTIONAL)

A. Edge Flashing:

  • Install edge flashing at exposed deck perimeters
  • Secure flashing to substrate with appropriate fasteners
  • Overlap joints minimum 6 inches
  • Seal all joints and fasteners
  • Integrate flashing with waterproofing system layers

B. Deck-to-Wall Flashing:

  • Install at all deck-to-wall intersections
  • Extend flashing minimum 4 inches up wall and 4 inches onto deck surface
  • Fasten securely to wall and substrate
  • Seal top edge with appropriate sealant
  • Integrate with waterproofing layers

3.5 FIELD QUALITY CONTROL

A. Inspection:

  • Inspect each layer before proceeding to next
  • Verify complete coverage and proper thickness
  • Check for voids, gaps, or defects
  • Ensure proper overlap at seams

B. Testing:

  • Conduct flood test or spray test after system completion (if specified)
  • Observe for leaks for minimum 24 hours
  • Document test results

C. Deficiencies:

  • Repair defects immediately
  • Retest after repairs are complete
  • Obtain manufacturer's approval for repair procedures if necessary

3.6 CLEANING

A. During Installation:

  • Keep work area clean and organized
  • Remove excess materials daily
  • Clean tools and equipment immediately after use

B. Final Cleaning:

  • Remove all construction debris
  • Clean overspray or spills from adjacent surfaces
  • Leave site in broom-clean condition

3.7 PROTECTION

A. Curing Period:

  • Protect installed system from traffic until fully cured
  • Minimum cure time: 24-48 hours for light foot traffic
  • Minimum cure time: 7 days for full traffic and furniture
  • Protect from rain for minimum 24 hours after final coat

B. Final Protection:

  • Barricade or mark newly installed areas
  • Provide signage warning of wet surfaces
  • Prevent damage from subsequent construction activities
  • Cover or protect surfaces if necessary during other trades' work

END OF SECTION 07 18 13

DIVISION 07 00 00 – THERMAL AND MOISTURE PROTECTION

SECTION 07 18 13

PEDESTRIAN TRAFFIC COATINGS

Deck Flex W.F. Walking Deck and Roof Covering System (Class B Fire-Rated)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

  • Class B fire-rated waterproofing system for pedestrian deck surfaces
  • Suitable for both plywood and concrete substrates
  • Multi-layer cementitious waterproofing with fiberglass reinforcement
  • Primer for concrete surfaces, base coat, and topcoat finish
  • Optional flashing components for perimeter and transitions

B. Related Sections:

  • Section 03 30 00 - Cast-in-Place Concrete (concrete substrate)
  • Section 06 10 00 - Rough Carpentry (plywood substrate)
  • Section 07 92 00 - Joint Sealants
  • Section 09 96 00 - High-Performance Coatings

1.2 REFERENCES

A. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials

B. ICC-ES Evaluation Report - ESR-3672

C. International Building Code (IBC) - Current edition adopted by jurisdiction

D. ASTM D412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension

E. ASTM D4258 - Standard Practice for Surface Cleaning Concrete for Coating

1.3 ADMINISTRATIVE REQUIREMENTS

A. Preinstallation Meeting: Conduct meeting at project site to review installation procedures, substrate conditions, and project requirements.

B. Installer Qualifications: Company specializing in waterproofing with minimum 5 years experience installing cementitious deck systems on both plywood and concrete substrates.

1.4 SUBMITTALS

A. Product Data:

  • Manufacturer's technical data sheets for each system component
  • Coverage rates and application instructions
  • Safety Data Sheets (SDS)
  • Substrate-specific application guidelines (plywood vs. concrete)

B. Shop Drawings:

  • Layout drawings showing system application areas
  • Detail drawings for transitions, penetrations, and terminations
  • Flashing details at perimeters and wall intersections
  • Joint treatment details

C. Test Reports:

  • ASTM E84 fire rating test results (Class B)
  • ICC-ES Evaluation Report ESR-3672
  • Laboratory test reports for system components

D. Samples:

  • 6-inch square samples showing completed system with specified topcoat color
  • Samples of flashing materials

E. Warranty: Submit manufacturer's standard warranty

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications:

  • Manufacturer with minimum 35 years experience in waterproofing systems
  • Deck Coating Products, Inc. (Deck Flex), established 1985
  • Products manufactured in USA

B. Installer Qualifications:

  • Licensed contractor in jurisdiction where work is performed
  • Trained in application of specified waterproofing system
  • Minimum 5 years experience installing waterproofing systems
  • Minimum 3 completed projects of similar scope and complexity
  • Experience with both plywood and concrete substrates

C. Fire-Test-Response Characteristics:

  • Flame Spread Index: 26-75 (Class B) per ASTM E84
  • Smoke Developed Index: 0-450 per ASTM E84

D. Regulatory Requirements:

  • Comply with ICC-ES Evaluation Report ESR-3672
  • Meet requirements of International Building Code (IBC)
  • Comply with local building code amendments

1.6 DELIVERY, STORAGE, AND HANDLING

A. Delivery:

  • Deliver products in original, unopened containers with labels intact
  • Verify containers are sealed and undamaged

B. Storage:

  • Store materials in dry, temperature-controlled environment
  • Protect from moisture, direct sunlight, and freezing temperatures
  • Storage temperature range: 40°F to 90°F (4°C to 32°C)
  • Elevate materials off ground on pallets

C. Handling:

  • Handle materials to prevent damage to containers and contents
  • Use proper lifting techniques for heavy containers

1.7 PROJECT CONDITIONS

A. Environmental Requirements:

  • Ambient air temperature: 45°F to 100°F (7°C to 38°C)
  • Substrate temperature: 45°F to 100°F (7°C to 38°C)
  • Relative humidity: Less than 90%
  • Do not apply when rain is expected within 24 hours
  • Do not apply when substrate is wet or damp
  • Protect work from rain for minimum 24 hours after application

B. Substrate Conditions - Plywood:

  • Plywood must be structural grade, minimum 5/8" thick
  • Maximum moisture content: 19% by weight
  • Substrate must be clean, dry, and free of contaminants
  • Properly sloped for drainage (minimum 1/4" per foot)

C. Substrate Conditions - Concrete:

  • Concrete must be fully cured (minimum 28 days)
  • Surface must be clean per ASTM D4258
  • Free of form oils, curing compounds, and laitance
  • Maximum moisture vapor emission: Per manufacturer's requirements
  • Properly sloped for drainage (minimum 1/4" per foot)

1.8 WARRANTY

A. Manufacturer's Warranty: Deck Coating Products, Inc. (Deck Flex) provides a 10-year product warranty when system is installed by qualified applicator in accordance with manufacturer's specifications. Warranty covers materials against defects in workmanship and materials under normal use and service conditions.

B. Installer's Warranty: Provide workmanship warranty for period specified in contract documents.

C. Warranty Conditions:

  • System must be installed by applicator with minimum 5 years experience
  • Installation must comply with manufacturer's published specifications
  • Substrate must be properly prepared and meet manufacturer's requirements
  • Regular maintenance must be performed as recommended by manufacturer

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturer:

Deck Coating Products, Inc. (Deck Flex)

5722A Research Dr

Huntington Beach, CA 92649

Website: deckflex.com

Phone: (888) 929-8624

Email: deckflex@deckflex.com

B. Substitutions: Not permitted. System is specified based on ICC-ES evaluation and fire testing of complete assembly.

2.2 DECK FLEX W.F. WALKING DECK AND ROOF COVERING SYSTEM COMPONENTS

A. Primer (For Concrete Substrates Only):

  • Product: Deck Flex Primer
  • Type: Acrylic primer/sealer
  • Coverage: 200 square feet per gallon
  • Container: 5-gallon buckets
  • Function: Seals concrete surface and improves adhesion

B. Fiberglass Reinforcement:

  • Product: Deck Flex Pro Fiberglass
  • Weight: 3/4 ounce per square yard (25.4 g/m²)
  • Width: 50 inches
  • Roll Size: 1,800 square feet
  • Type: Woven fiberglass fabric

C. Cementitious Base Layer - Troweled:

  • Product: Deck Flex TetraCrete TC #3 Troweled (Grey)
  • Composition: Proprietary polymer-modified cementitious blend
  • Type: Polymer-modified cementitious coating
  • Bag Size: 50 pounds
  • Coverage: 200 square feet per bag (W.F. system application rate)
  • Application: Trowel applied
  • Color: Grey

D. Cementitious Layer - Sprayed (Option 1):

  • Product: Deck Flex TetraCrete TC #2 Sprayed (White)
  • Type: Polymer-modified cementitious coating
  • Coverage: 150 square feet per bag
  • Application: Spray applied
  • Color: White

E. Cementitious Layer - Troweled (Option 2):

  • Product: Deck Flex TetraCrete TC #2 Troweled (White)
  • Type: Polymer-modified cementitious coating
  • Coverage: 50 square feet per bag
  • Application: Trowel applied
  • Color: White
  • Use: When spray application is not practical

F. TetraCrete Additive:

  • Product: Deck Flex TetraCrete Additive
  • Type: Liquid polymer additive
  • Ratio: 1 gallon per 1 bag of TetraCrete
  • Container: 5-gallon buckets
  • Function: Enhances adhesion, flexibility, and waterproofing properties

G. Base Coat:

  • Product: Deck Flex Base Coat
  • Type: Elastomeric acrylic polymer coating
  • Coverage: 60-75 square feet per gallon
  • Dry Thickness: 1/16 inch
  • Container: 5-gallon buckets
  • Function: Provides additional waterproofing and prepares surface for topcoat

H. Top Coat:

  • Product: Deck Flex Top Coat
  • Type: Elastomeric acrylic polymer finish coat
  • Coverage: 150-180 square feet per gallon (for 2 coats combined, W.F. system)
  • Container: 5-gallon buckets
  • Colors: Specify color selection from manufacturer's color chart
  • Finish: Textured, slip-resistant

I. Edge Flashing (Optional):

  • Product: Deck Flex Edge Flashing
  • Material: Galvanized steel with zinc coating
  • Length: 10 feet per piece

J. Deck-to-Wall Flashing (Optional):

  • Product: Deck Flex Wall Flashing
  • Material: Galvanized steel
  • Length: 10 feet per piece

K. Sealant:

  • Type: Polyurethane or silicone sealant
  • Use: Sealing joints, terminations, and penetrations
  • Color: To match topcoat finish

L. Patching Compound (Optional):

  • Product: Deck Flex Patching Compound
  • Type: Polymer-modified repair material
  • Use: Filling cracks, voids, and surface imperfections

2.3 PERFORMANCE CHARACTERISTICS

A. Fire Rating: Class B per ASTM E84

  • Flame Spread: 26-75
  • Smoke Developed: 0-450

B. ICC-ES Evaluation: ESR-3672 (reissued May 2024)

  • Complies with IBC 2021, 2018, 2015, 2012, 2009, 2006
  • Subject to renewal April 2025

C. Physical Properties:

  • System Thickness: Approximately 1/4 inch
  • System Weight: Approximately 1.6 lbs per square foot

D. Waterproofing: Complete system provides waterproof barrier when installed per manufacturer's instructions

E. Substrate Compatibility: Suitable for both plywood and concrete substrates

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify Substrate Conditions - Plywood:

  • Substrate is clean, dry, and free of contaminants
  • Plywood is structural grade, minimum 5/8" thick
  • All fasteners are flush or countersunk
  • Joints and cracks are properly prepared
  • Substrate is properly sloped for drainage
  • Substrate moisture content does not exceed 19% by weight

B. Verify Substrate Conditions - Concrete:

  • Concrete is fully cured (minimum 28 days)
  • Surface is clean per ASTM D4258
  • Free of form oils, curing compounds, laitance, and contaminants
  • Surface is sound with no spalling or delamination
  • Cracks and joints are properly prepared
  • Substrate is properly sloped for drainage
  • Moisture vapor emission is within acceptable limits

C. Do Not Proceed: Do not begin installation until unsatisfactory conditions are corrected.

3.2 PREPARATION

A. Clean Substrate:

  • Remove all dirt, dust, oil, grease, and loose materials
  • For concrete: Power wash or use appropriate cleaning method per ASTM D4258
  • Ensure surface is dry before proceeding

B. Repair Defects:

  • Fill cracks, voids, and surface irregularities with patching compound
  • Allow repairs to cure before proceeding
  • For plywood: Countersink or remove protruding fasteners
  • For concrete: Fill bug holes and surface voids

C. Install Flashing:

  • Install perimeter and wall flashing as detailed in drawings
  • Secure flashing with appropriate fasteners
  • Seal all joints and terminations

3.3 INSTALLATION - DECK FLEX W.F. WALKING DECK AND ROOF COVERING SYSTEM

A. Primer Application (Concrete Substrates Only):

  1. Stir primer thoroughly before use
  2. Apply using brush, roller, or approved spray equipment
  3. Coverage: 200 square feet per gallon
  4. Apply in uniform coat to seal concrete surface
  5. Allow to dry per manufacturer's specifications (typically 2-4 hours)
  6. Ensure complete coverage with no holidays (bare spots)

B. Deck Flex TetraCrete TC #3 (Grey) Application (Troweled Base):

  1. Mix one bag of Deck Flex TetraCrete TC #3 (Grey) with 1 gallon of TetraCrete Additive
  2. Mix thoroughly to achieve uniform, lump-free consistency
  3. Apply using trowel
  4. Coverage: 200 square feet per bag (W.F. system application rate)
  5. Apply in thin, uniform coat
  6. Work time: Use mixed material within manufacturer's specified pot life

C. Fiberglass Membrane Installation:

  1. Apply fiberglass while Deck Flex TetraCrete TC #3 (Grey) is still wet (within 30 minutes of application)
  2. Unroll fiberglass over wet Deck Flex TetraCrete TC #3 (Grey)
  3. Overlap seams minimum 2 inches
  4. Embed fiberglass into Deck Flex TetraCrete TC #3 (Grey) using trowel or roller
  5. Ensure complete saturation and no air pockets
  6. Remove wrinkles and ensure flat, smooth surface

D. Deck Flex TetraCrete TC #2 (White) Application - Option 1 (Sprayed):

  1. Allow Deck Flex TetraCrete TC #3 (Grey) and fiberglass to cure per manufacturer's specifications
  2. Mix one bag of Deck Flex TetraCrete TC #2 (White) (Sprayed) with 1 gallon of TetraCrete Additive
  3. Mix thoroughly to achieve sprayable consistency
  4. Apply using approved spray equipment
  5. Coverage: 150 square feet per bag
  6. Apply in uniform coat to completely cover fiberglass
  7. Allow to cure per manufacturer's specifications

E. Deck Flex TetraCrete TC #2 (White) Application - Option 2 (Troweled):

  1. Allow Deck Flex TetraCrete TC #3 (Grey) and fiberglass to cure per manufacturer's specifications
  2. Mix one bag of Deck Flex TetraCrete TC #2 (White) (Troweled) with 1 gallon of TetraCrete Additive
  3. Mix thoroughly to achieve trowelable consistency
  4. Apply using trowel
  5. Coverage: 50 square feet per bag
  6. Apply in uniform coat to completely cover fiberglass
  7. Allow to cure per manufacturer's specifications

F. Base Coat Application:

  1. Allow TetraCrete layers to fully cure (minimum 24-48 hours depending on conditions)
  2. Stir Base Coat thoroughly before use
  3. Apply using brush, roller, or approved spray equipment
  4. Coverage: 50 square feet per gallon
  5. Apply in uniform coat
  6. Allow to dry per manufacturer's specifications before topcoat application

G. Top Coat Application:

  1. Stir Top Coat thoroughly before use
  2. Apply first coat using brush, roller, or approved spray equipment
  3. Coverage: 150 square feet per gallon total for both coats (W.F. system)
  4. Allow first coat to dry per manufacturer's specifications (typically 4-6 hours)
  5. Apply second coat perpendicular to first coat for uniform coverage
  6. Maintain wet edge during application
  7. Final texture should be uniform and slip-resistant

3.4 FLASHING INSTALLATION (OPTIONAL)

A. Edge Flashing:

  • Install edge flashing at exposed deck perimeters
  • Secure flashing to substrate with appropriate fasteners
  • Overlap joints minimum 6 inches
  • Seal all joints and fasteners
  • Integrate flashing with waterproofing system layers

B. Deck-to-Wall Flashing:

  • Install at all deck-to-wall intersections
  • Extend flashing minimum 4 inches up wall and 4 inches onto deck surface
  • Fasten securely to wall and substrate
  • Seal top edge with appropriate sealant
  • Integrate with waterproofing layers

3.5 FIELD QUALITY CONTROL

A. Inspection:

  • Inspect each layer before proceeding to next
  • Verify complete coverage and proper thickness
  • Check for voids, gaps, or defects
  • Ensure proper overlap at seams

B. Testing:

  • Conduct flood test or spray test after system completion (if specified)
  • Observe for leaks for minimum 24 hours
  • Document test results

C. Deficiencies:

  • Repair defects immediately
  • Retest after repairs are complete
  • Obtain manufacturer's approval for repair procedures if necessary

3.6 CLEANING

A. During Installation:

  • Keep work area clean and organized
  • Remove excess materials daily
  • Clean tools and equipment immediately after use

B. Final Cleaning:

  • Remove all construction debris
  • Clean overspray or spills from adjacent surfaces
  • Leave site in broom-clean condition

3.7 PROTECTION

A. Curing Period:

  • Protect installed system from traffic until fully cured
  • Minimum cure time: 24-48 hours for light foot traffic
  • Minimum cure time: 7 days for full traffic and furniture
  • Protect from rain for minimum 24 hours after final coat

B. Final Protection:

  • Barricade or mark newly installed areas
  • Provide signage warning of wet surfaces
  • Prevent damage from subsequent construction activities
  • Cover or protect surfaces if necessary during other trades' work

END OF SECTION 07 18 13

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