Product Data Sheet
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PAREX® Masonry Veneer Adhesive

Polymer Modified Thin Veneer Adhesive

PAREX® Masonry Veneer Adhesive is a dry mixed polymer-modified thin veneer adhesive that contains portland cement.

  • Suitable for commercial and residential installations.
  • Easy to apply, only mix with water.
  • High compressive strength (at 28 days).
  • One component, easy to apply formulation that meets low VOC requirements in all 50 states.
  • Freeze-thaw stable bond
Product Data Sheet
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Usage

PAREX® Masonry Veneer Adhesive is a polymer modified portland cement setting adhesive for installing manufactured stone masonry units, ceramic tile, and thin brick over:
  • For use with Parex® MVS CI 
  • Non-insulated stucco systems
  • Poured in place concrete or precast concrete
  • Conrete masonry units 
  • Cement board Systems
Note: Use only for above grade vertical walls. Not for use below grade or on surfaces subject to continuous or intermittent immersion in water or hydrostatic pressure.

Advantages

  • Suitable for commercial and residential installations.
  • Easy to apply, only mix with water.
  • High compressive strength (at 28 days).
  • One component, easy to apply formulation that meets low VOC requirements in all 50 states.
  • Freeze-thaw stable bond

Packaging

50 lbs per bag (22.6 kg)

Color

Grey

Product Details

Product Information

Shelf Life

One (1) year when unopened and stored as directed.

Storage Conditions

  • Store materials in a cool, dry place. Protect from extreme heat and direct sunlight.
  • Protect bagged materials from moisture during transportation and storage.
  • Protect materials during transportation to avoid physical damage.
  • Do not stack pallets.

Volatile organic compound (VOC) content

0 g/l, or 0 lbs/gal less water and exempt solvents.
Technical Information

Tensile Strength

TEST

METHOD

CRITERIA

RESULT

Compressive Strength

ASTM C109

Report Value

4000 psi

Shear Strength

ANSI A118.4

28 days ≥ 200 psi
After 7 day water immersion ≥ 150 psi

565 psi at 28 days
306 psi after 7 day water immersion

Shear Strength

ANSI A118.15

7 days ≥ 300 psi
28 days ≥ 400 psi
After 7 days water immersion ≥ 200 psi

487 psi at 7 days
565 psi at 28 days
306 psi after 7 day water immersion

Slant Shear StrengthASTM C482Minimum 50 psi130 psi - Directly to molded cement mortar bed specified in
ASTM C482 146 psi average to standard and dry base coats molded cement mortar bed specified in ASTM C482.

Slant Shear Strength

ASTM C273


Full assembly test for EPS Strength

Core shear modulus
of the EPS is equal to
or greater than 280
psi. The 2% offset
shear strength strength
is equal to or
greater than 12 psi		Shear modulus
281.43 psi; offset shear 13.6 psi

Freeze-Thaw Stability

Freeze-Thaw StabilityASTM C666Procedure A, cycles rapid freezing and thawing in water. 40°F- 0°F-40°F in not less than 2 hrs and not more than 5 hrs; modified using full IVS composite in place of concrete beam>100 cycles, no failure of PAREX® Masonry Veneer Adhesive

Application

Application Information

Substrates

  • Portland Cement Plaster (Stucco) scratch or brown coat complying with ASTMC 926
  • PermaBase® Cement Board and other cement boards conforming with ASTM C1325 (Type A - exterior)
  • Poured and precast concrete/unit masonry coated with Parex Weatherblock VB AB air/water-resisitve barrier
  • Poured and precast concrete/unit masonry coated with Sika ThoroSeal 581

Pot Life

Working time is 1-2 hours after water has been added. Open time is affected by humidity, temperature, and other environmental conditions.

Cure Time

  • Allow veneer adhesive to cure for 24-hours before applying pointing mortar (if used).
  • Protect from freezing for minimum of 72-hours after installation.
  • Do not apply if rain is forecast within the next 24-hours.
Consumption

Coverage

As Skim Coat: 90 ft2 (8.4m2)
Think Brick Adhesive: 34-46 ft2 (3.1-4.3m2) at 3/16"-1/4"
Stone Adhesive: 23-34 ft2 (2.1-3.1m2) at 1/4"-3/8"


Coverage rates will vary based on type of application. Profile on back of veneer may also affect coverage rates.
Application steps

SUBSTRATE PREPARATION

Surfaces shall be clean, free of dirt, oil, grease, paint, concrete sealers, form releasing agents or curing compounds, and are structurally sound.

  • All surfaces shall be between 40°F (4.5 °C), and 100°F (38 °C).
  • Ensure that all control and expansion joints are not covered with PAREX® Masonry Veneer Adhesive.
  • Do not wet skim coat or veneer with water prior to installation.

MIXING

Prepare to mix one bag in a 5-gallon (19-liter) pail that is clean and free of foreign substances. Add the following amount of clean, potable water to a pail:

  • For skim coat or thin brick veneer: 1.0-1.5 gal (3.8- 4.7L).
  • Stone and tile: 0.75-1.25 gal (2.8-3.8L). Add a full bag of PAREX® Masonry Veneer Adhesive to the pail in small increments, mixing after each addition. Mix with a low speed drill and 4-sided mortar paddle until thoroughly blended. Let stand for 5 to 10 minutes, then remix /retemper for 1 minute before use. The mixed material should have a thick putty consistency and not slide off the trowel when held vertically.
  • Do not exceed the total amount of water listed above. Do not use pails that have contained or been cleaned with a petroleum based product.
  • Additives are not permitted.
  • Protect from direct sun and wind.
  • Close container when not in use.
  • Clean tools with soap and water immediately after use. Dried material can only be removed mechanically.

APPLICATION

For Parex® MVS CI systems, portland cement stucco brown coat, cement board, CMU, poured in place or precast concrete substrates, apply PAREX® Masonry Veneer Adhesive as a skim coat over the acceptable substrate at approximately 1/16” (1.6mm) thick. Apply to an area that can be covered with adhered veneer before the skim coat dries. Allow skim coat layer to set for 3- 5 minutes, then proceed with adhering the selected veneer. Veneer adhesive shall be applied and veneer installed such that the PAREX® Masonry Veneer Adhesive is free of voids.

  • Thin Brick Units: spread veneer adhesive onto the back of bricks in a continuous layer nominally 3/16”-1/4” thick and press bricks firmly into place on the substrate.
  • Stone Veneer: apply veneer adhesive to the back of clean stone veneer in a continuous layer nominally 1/4”-3/8” thick. Press firmly in place with a twisting movement until excess material exudes from the sides of the unit. Remove excess PAREX® Masonry Veneer Adhesive between units.
  • Ceramic Tile: installation should proceed in accordance with ANSI A 108.5 (the type and size of the tile will dictate adhesive application- contact Sika Facades Technical Department for more specific information).

Refer to respective manufacturer instructions for veneer and pointing mortar.

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