TEC® HydraFlex Waterproofing Crack Isolation Membrane

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Ready-to-use, flexible, mold and mildew resistant waterproofing crack isolation membrane for interior and exterior applications.

Forms a smooth, monolithic, watertight surface over walls, floors and ceilings. HydraFlex™ Membrane stops in-plane cracks up to 1/8" (3 mm) or up to 1⁄4" (6 mm)* wide at the subfloor from telegraphing through to ceramic and stone tile. For residential to extra heavy commercial applications.

*Based on application

• Exceeds ANSI A118.10 Specifications for Waterproof Membranes
• Exceeds ANSI A118.12 Specifications for Crack Isolation Membranes
• Use for Positive Hydrostatic Pressure Applications
• Fast Drying – ready for tile installation in 1 to 3 hours
• Easy roller, trowel or spray application
• No mesh required (except for waterproofing installations at changes in-plane
and substrate joints)
• Apply over new (green) concrete as little as 3 days old
• Isolates cracks from 1/8" (3 mm) up to 1⁄4" (6 mm)*
• Membrane resistant to growth of mold and mildew
• IAPMO approved
• Approved over control joints
• Contributes to LEED® project points
• Low VOC
*Based on application
  • Exceeds ANSI A118.10 Specifications for Waterproof Membranes
  • Exceeds ANSI A118.12 Specifications for Crack Isolation Membranes
  • Use for Positive Hydrostatic Pressure Applications
  • Fast Drying – ready for tile installation in 1 to 3 hours
  • Easy roller, trowel or spray application
  • No mesh required (optional for waterproofing applications)
  • Apply over new (green) concrete as little as 3 days old
  • Isolates cracks up to 1/8" (3 mm) or up to 1⁄4" (6 mm) based on application
  • Membrane resistant to growth of mold and mildew
  • IAPMO approved
  • Approved over control joints
  • Contributes to LEED® project points
  • Low VOC

 

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Terms and conditions

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TEC® HydraFlex Waterproofing Crack Isolation Membrane

Description

DESCRIPTION

Ready-to-use, flexible, mold and mildew resistant waterproofing crack isolation membrane for interior and exterior applications. Forms a smooth, monolithic, watertight surface over walls, floors and ceilings. HydraFlex™ Membrane stops in-plane cracks up to 1/8" (3 mm) or up to 1⁄4" (6 mm)* wide at the subfloor from telegraphing through to ceramic and stone tile. For residential to extra heavy commercial applications.

*Based on application

Key Features and Benefits

• Exceeds ANSI A118.10 Specifications for Waterproof Membranes

• Exceeds ANSI A118.12 Specifications for Crack Isolation Membranes

• Use for Positive Hydrostatic Pressure Applications

• Fast Drying – ready for tile installation in 1 to 3 hours

• Easy roller, trowel or spray application

• No mesh required (optional for waterproofing applications)

• Apply over new (green) concrete as little as 3 days old

• Isolates cracks up to 1/8" (3 mm) or up to 1⁄4" (6 mm) based on application

• Membrane resistant to growth of mold and mildew

• IAPMO approved

• Approved over control joints

• Contributes to LEED® project points

• Low VOC

 

Packaging
3.5 U.S. gallon plastic pails (13.24 L)

Product #7002741211 

 

Coverage

 Application

Required Coats

Wet Film Thickness (mils)

Approximate Coverage

per Gallon

1/8" (3 mm)

1

25 mils [.025" (.6 mm)]

100 sq. ft. (9.29 m2)

1/4" (6 mm)

1

50 mils [.05" (1.27 mm)]

50 sq. ft. (4.65 m2)

Waterproofing

2

1st Coat - 25 mils [.025" (.6 mm)]

2nd Coat - 25 mils [.025" (.6 mm)]

50 sq. ft. (4.65 m2)

 

 

Suitable Substrates
When properly prepared, suitable substrates include:

• Concrete (minimum 3 days old), cured mortar beds and masonry (interior or exterior)

• Gypsum wallboard (interior), cementitious backer units (CBU or cement board. Interior or exterior)

• APA Grade Trademarked Exposure 1 Plywood [CDX or better; two layers, 11⁄8" (28 mm) total minimum thickness, interior floors only]

• Gypsum underlayment (minimum compressive strength 2000 psi)

• Existing ceramic tile, VCT or non-cushioned sheetgoods provided they are single layer only and well bonded to a substrate approved for tile (interior)

• Adhesive residue (except tacky or pressure-sensitive adhesive, interior only)

• Cold rolled steel

 

Substrate Preparation

Application surfaces must be free from oil, grease, dust, paint, concrete sealers, floor finishes or curing compounds. New concrete shall be finished with a steel trowel, have a fine broom finish, and must cure a minimum of 3 days. For high moisture vapor emission concrete applications, the maximum acceptable moisture vapor emission rate is 12 pounds per 1000 square feet (5.4 kg per 92.9 m2) per 24 hours when evaluated by ASTM F1869 or 90% relative humidity per ASTM F2170. Where required, existing concrete surfaces shall be prepared by mechanical method such as scarifying, grinding, sand blasting or shot blasting. Surface protrusions and tile glazes will be removed by sanding, scraping or scarifying. After preparation, remove all dust by vacuuming. Clean concrete floor from dust with a wet sponge and let the floor dry completely before membrane application. Note: Vinyl asbestos tile or any substrate containing asbestos must not be sanded, scored or scarified because of the potential health hazard of breathing dust. Any substrate containing asbestos must be handled in accordance with existing EPA regulations. Contact your local EPA office. Patch and fill holes and voids with an appropriate TEC® surface preparation product. Treat existing building construction, contraction (control), and expansion or isolation joints as required in the following installation instructions. Provide movement joints in the tile where specified.

 

Storage
Store in cool, dry location. Do not store open containers, nor leave containers exposed to sunlight. Product must be kept at temperatures of 40°-90°F (4°-32°C). Keep from freezing.

 

Shelf Life
Maximum of 1 year from date of manufacture in unopened package.

 

Limitations
• Not for use as a wear surface.

• Do not apply over wet areas.

• Do not use over dimensionally unstable substrates such as particle board, pressboard, lauan plywood, waferboard, tempered hardboard (e.g. Masonite) or fiberglass.

• Do not use in areas subject to hydrostatic pressure from beneath the membrane.

• For exterior wall applications, refer to local building codes for moisture vapor transmission requirements.

 

Cautions
Read complete cautionary information printed on product container prior to use.

For medical emergency information, call 1-888-853-1758.

This Product Data Sheet has been prepared in good faith on the basis of information available at the time of publication. It is intended to provide users with information about and guidelines for the proper use and application of the covered TEC® brand product(s) under normal environmental and working conditions. Because each project is different, H.B. Fuller Construction Products Inc. cannot be responsible for the consequences of variations in such conditions, or for unforeseen conditions.

 

TECHNICAL DATA

Applicable Standard

Exceeds ANSI A118.10 Specifications for Waterproof Membranes

Exceeds ANSI A118.12 Specifications for Crack Isolation Membranes

HydraFlex™ Waterproofing Crack Isolation Membrane (316)

Description

ANSI A118.10 Requirement

Typical Results

Shear Strength

7-Day

7-Day, Water Immersion

4-Week

12-Week

100-Day, Water Immersion

 

50 psi (0.34 MPa)

50 psi (0.34 MPa)

50 psi (0.34 MPa)

50 psi (0.34 MPa)

50 psi (0.34 MPa)

 

238 psi (1.63 MPa)

150 psi (1.03 MPa)

310 psi (2.12 MPa)

330 psi (2.26 MPa)

125 psi (0.86 MPa)

Fungus Resistance

Shall not support mold growth

Passes

Seam Strength

8 lb./inch width

> 20 lb./inch width(> 3.6 lg/cm)

Breaking Strength

Minimum 170 psi (1.17 MPa)

250 psi (1.72 MPa)

Dimensional Stability

Maximum 0.7% length change

< 0.7% length change

Waterproofness

Tested in accordance with American Standards for Load Bearing, Bonded, Waterproof Membranes for Thin Set Ceramic Tile and Dimension Stone Installations—ANSI A118.10

No visible water penetration after 48 hours

Passes

Description

ANSI A118.12 Requirement

Typical Results

Point Load

Minimum 1000 lb. load without cracking tile

Passes

Shear Deflection

Standard Performance Min. 116" (1.6 mm)High Performance Min. 18" (3 mm)

High Performance

Crack Resistance Test

Standard Performance Min. 116" (1.6 mm)High Performance Min. 18" (3 mm)

High Performance

Additional Tests

Test Method

Typical Results

Accelerated Test for Fungal Defacement

ASTM D5590

Passed with no growth and 10 mm zone off inhibition.

Water Vapor Permeance

ASTM E96 Procedure B

1.5 perms (85.8 ng/PA·s·m2)

Elongation

ASTM D751

750%

Tensile Strength

ASTM D751

250 psi (1.72 MPa)

 

 

Physical Properties

Description

Physical State

Liquid: Acrylic Emulsion Modified with a Polyurethane Dispersion Waterproofing Mesh: Non-hazardous Fibrous Mesh

Color

Cured: Purple

Odor

Cured: None Uncured: Mild Ammonia

Tile Installation Time [at 70°F (21°C)]

1-3 hours after membrane application. See CURING section for more information.

Foot Traffic Rating (ASTM C627)

Residential to Extra Heavy Commercial (depending on substrate)

Service Temperature Rating

-20°F (-29°C) to 320°F (160°C)

VOC (less water)

12 g/L

Storage

Store in cool, dry location. Do not store open containers, nor leave containers exposed to sunlight. Keep from freezing.

Shelf Life

Maximum 1 year from date of manufacture in properly stored, unopened package.

Freeze/thaw Stability of Liquid

None. KEEP FROM FREEZING.

 

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS AS WATERPROOFING MEMBRANE

Application—Waterproofing Membrane

To achieve waterproofing properties, a continuous membrane (no voids) of at least 46-50 mils [3⁄64" (1.14-1.27 mm)] wet film thickness is required over the entire surface. Pre-fill all concrete cracks and plywood gaps up to 1⁄8" (3 mm) wide with membrane prior to application. Treat cracks greater than 1⁄4" (6 mm) wide as expansion joints (see following section).

Apply membrane to entire surface using a 1⁄4" to 1⁄2” ( 6-12 mm) nap roller, 3⁄16" (4.7 mm) v-notch trowel, or airless sprayer*. For waterproofing installations, membrane must be applied in two coats. Apply first coat, measuring membrane periodically with a wet film thickness gage to ensure a minimum thickness of 25 mils wet. Allow first coat to dry approximately 1 hour, until membrane changes to a semi-transparent color. Then apply second coat at right angles to the first coat. An additional 25 mils wet film thickness shall be applied to achieve a combined total thickness of 50 mils wet, curing to a dry film thickness of 30 mils.

* Graco® Electric Airless Sprayer Model 390 or equivalent. Specifications: 0.020 Maximum Nozzle Orifice, Maximum Sprayer Pressure 3,300 psi, flow rate of 0.43 gallons per minute, Contractor FTX11 Gun, RACX 515 Tip & Guard. Graco is a trademark of Graco Inc.

Application—Mesh (Flashing)

Flashing with TEC® brand Waterproofing Mesh is optional at all substrate joints; field seams; inside corners; outside corners; anywhere vertical surfaces meet horizontal surfaces such as curbs, bench seats, columns, etc.; or anywhere dissimilar materials meet. Flashing is also optional for drains and expansion/control joints.

To accomplish flashing, first pre-coat the substrate intersections 4" (100 mm) on each side. Then fully embed the 6" (150 mm) wide waterproofing mesh in both directions into the pre-coated areas with a 3" (76 mm) overlap on each side. Allow to dry (approximately 30 to 45 minutes) before full application of membrane.

Application—Joint Details

Cracks or Control joints [typically 1⁄4" (6 mm) or smaller]: Ensure crack or joint is clean and free of all debris. Then fill the crack or joint with membrane and spread to 4" (100 mm) on either side, embedding the waterproofing mesh. Install the membrane over the entire surface ensuring a continuous 50 mil wet film thickness. Generic movement joints in the tile should be placed as shown in TCNA EJ171F Movement Joint Guidelines. Place at a frequency of 20' to 25' in each direction for interior installations and 8' to 12' for exterior installations or interior installations with direct sunlight or moisture exposure. Perimeter joints should be placed as shown in EJ171. When HydraFlex™ is applied over the entire substrate, it is not necessary to locate tile or stone field movement joints directly over control joints or cracks as shown in EJ171B. For treatment of cracks or control joints where HydraFlex® Waterproofing Crack Isolation Membrane is not applied over the entire substrate, see Technical Bulletin "Treatment of INDIVIDUAL Concrete Cracks with TEC® Products" on tecspecialty.com.

Fig. 1: Treatment of Cracks or Control Joint with TEC® HydraFlex™ Waterproofing Crack Isolation Membrane

 

Expansion, Isolation, and Construction Joints: Ensure joint is clean and free of all debris. Install compressible backer rod (open or closed cell backer rod) into the joint. Next compress the specified sealant into the joint according to the sealant manufacturer’s printed installation instructions, leaving it flush with the surrounding surface. After the sealant has cured, cover the joint with bond breaker tape. Apply membrane as directed, making sure to embed the 6" (150 mm) wide waterproofing mesh centered over the joint, with a 3" (76 mm) overlap on either side. After installing the membrane over the entire surface ensuring a continuous 50 mil wet film thickness and required cure time, place bond breaker tape over the joint and install tile without bridging the joint. After the tile has been installed, caulk the joint with specified sealant.

Application—Drain Details

HydraFlex™ must extend to the bottom of the drain flange, with sufficient coverage to channel all water flow to and down the drain. DO NOT cover weep holes with membrane. The following diagram depicts a typical drain configuration:

Fig. 2: Drain Configuration

Note: This diagram is provided to show a typical drain detail and is not intended to make specific design recommendations.

Install a continuous membrane to cover the substrate and up to the drain opening, making sure to embed the waterproofing mesh around the drain opening, as shown in the diagram. Once the membrane has dried thoroughly, the flange should then clamp down on the membrane, with the weep holes unobstructed. (See TCA Installation Methods for shower receptors).

Clean-up

Clean tools, hands and excess material immediately (while still fresh) with water. Material that is cured is difficult or impossible to remove.

Curing/protection

HydraFlex™ membrane is typically ready for tile application in 1-3 hours. Cure times based on 70°F (21°C) and 50% RH. Colder temperatures, higher humidity or green concrete (not fully cured) will extend cure times. In all cases, care should always be taken to not gouge or otherwise disturb or damage the integrity of the cured membrane.

Inspect cured film to make sure there are no voids, bubbles or breaks in the membrane. Apply additional membrane to fill all voids. If water testing is desired/required prior to tile installation, allow membrane to cure at least 12 hours after application of second coat. Plug all drains and dam the floor area to be tested. Flood the area to a meaningful test level and place a mark at the initial water level. Check the area carefully, looking for any signs of leakage (air bubbles rising from the leak source). After 24 hours, check water level against mark(s) made at initial height. If significant loss has occurred, further investigation will be necessary to identify leaks.

Install tile using a suitable TEC® latex-modified mortar or TEC® AccuColor EFX® Epoxy Grout and Mortar.

INSTALLATION INSTRUCTIONS AS CRACK ISOLATION MEMBRANE

Pre-fill all concrete cracks, control joints and plywood gaps up to 1⁄8" (3 mm) wide with membrane prior to application. For expansion, isolation and construction joints continue joints through the tile installation in accordance with Installation Method EJ171 in the Tile Council of America handbook. Treat dynamic cracks (subjected to movement) greater than 1⁄4" (6 mm) wide for 50 mil wet film thickness, or1/8" (3 mm) wide for 25 mil wet film thickness as expansion joints. Generic movement joints in the tile should be placed as shown in TCNA EJ171F Movement Joint Guidelines. Place at a frequency of 20' to 25' in each direction for interior installations and 8' to 12' for exterior installations or interior installations with direct sunlight or moisture exposure. Perimeter joints should be placed as shown in EJ171. When HydraFlex™ is applied over the entire substrate, it is not necessary to locate tile or stone field movement joints directly over control joints or cracks as shown in EJ171B. For treatment of cracks or control joints where HydraFlex® Waterproofing Crack Isolation Membrane is not applied over the entire substrate, see Technical Bulletin "Treatment of INDIVIDUAL Concrete Cracks with TEC® Products" on tecspecialty.com.

1/8" Crack Isolation Applications:

Apply membrane to entire surface using a ½" to 1¼" (12-31 mm) synthetic nap roller, 1/8" (3 mm) v-notch trowel, or airless sprayer*. Membrane may be applied in one coat. Measure membrane periodically with a wet film thickness gage to ensure a minimum thickness of 25 mils [.025" (.6 mm)] wet, curing to a dry film thickness of 15 mils [.015" (.4 mm)].

* Graco® Electric Airless Sprayer Model 390 or equivalent. Specifications: 0.020 Maximum Nozzle Orifice, Maximum Sprayer Pressure 3,300 psi, flow rate of 0.43 gallons per minute, Contractor FTX11 Gun, RACX 515 Tip & Guard. Graco is a trademark of Graco Inc.

1/4" Crack Isolation Applications:

Membrane may be applied in one coat to entire surface. Measure membrane periodically with a wet film thickness gage to ensure a minimum thickness of 50 mils wet, curing to a dry film thickness of 30 mils.

Note: When using a V-notch trowel for crack isolation applications, “key in” a thin coat of membrane using the flat side of the trowel. Immediately afterwards, apply additional material using the notched side of the trowel held at approximately a 45 degree angle to the substrate. Again using the flat side of the trowel, flatten the ridges to form a smooth, continuous membrane.

Waterproofing mesh is not required for crack isolation applications.

Curing

Cure for 1-3 hours. Cure times based on 70°F (21°C) and 50% RH. Thicker films, cooler temperatures, higher humidity or green concrete (not fully cured) will extend cure times.

Install tile using a suitable TEC® latex-modified mortar or TEC® AccuColor EFX® Epoxy Grout and Mortar.

Clean-up

Clean tools, hands and excess material immediately (while still fresh) with water. Material that is cured is difficult or impossible to remove.

 

For details about our limited warranties, see your sales associate or visit http://www.tecskillset.com/warranties

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TEC® HydraFlex Waterproofing Crack Isolation Membrane Data Sheet

 

Download TEC® HydraFlex Waterproofing Crack Isolation Membrane Safety Data Sheet

 

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