UltraBond is a premium, polymer-fortified, adhesive mortar for the installation of thin brick, synthetic and natural stone products, ceramic tile and quarry tile. UltraBond Veneer Mortar Adhesive mixes easily with water to a creamy consistency and is formulated with high initial grab and shear resistance.

Features & Benefits

  • Non-Sag
  • Strong adhesion with Thin Brick and synthetic stone products
  • Class leading shear bond strength
  • Mixes easily with good open time
  • Vapor Permeable – resists blistering and allows trapped water vapors to pass
  • Freeze stable in dry form


VOC: 0
Shipping Locations: 30058 • 77474• 84651

Coverage per bag
Vertical Applications
1/4” x 3/8″ (6 mm x 9 mm) Notched Trowel: 60–70 Ft2, 5.6–6.5 M2

1/2″ x 1/2″ (12 mm x 12 mm) Notched Trowel: 40–45 Ft2, 3.7–4.2 M2

Adhered Masonry Veneer Application Method: 30–33 Ft2, 2.8–3.1 M2

Coverage may vary depending upon application technique and surface conditions.

Packaging/Shelf Life/Storage
Packaging: 50 lb (22.7 kg) bag
Shelf Life: 2 years
Storage: Protect from moisture and high humidity.

Technical Data

Compression (ASTM C270)
24 hours – 500 psi
7 day – 2700 psi
28 day – 3350 psi

Tensile (ANSI A118) Glazed/Mosaic
7 day – 315 psi / 305 psi
28 day – 500 psi / 290 psi

Shear Bond (ANSI A118.15) Glazed/Mosaic
7 day dry – 475 psi / 460 psi
7 day wet – 390 psi / 400 psi
28 day dry – 625 psi / 450 psi

Sag Resistance
(ISO 13007 24.2)
Quarry Tile – 0.0
Large Scale Tile – .485
Full Scale Stone – 0.0

Hazard: Considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200)

VOC: Less than 50 g/L.

Approved Substrates

Stucco (Scratch or Brown)
Mortar Parge Coat
Master Wall Base Coats
Metal Lath

Adheres to Rollershield
Others approved in writing

Application Procedure

Prior to installation, ensure back of veneer units are clean of dust, laitance, loose concrete crumbs and any excess film that could impede bond. Porous and excessively dry substrates such as cement board, masonry or stucco may need to be wetted to avoid excessive absorption, allow to dry to the touch. Verify wetting requirements with the veneer manufacturer.

For adhered stone, thin brick and manufactured stone masonry veneers installations, use a gauging trowel to key a thin coat of UltraBond Veneer Mortar Adhesive to cover entire back of the veneer units. Spread additional mortar onto the back of the skim coated veneer sufficient to completely fill the space between the veneer and the substrate when compressed against the substrate. Press the mortar covered back of the veneer against the substrate at the desired final position. Slide the unit roughly 1 -1.5” (25-38mm) diagonally from the desired final position and back into the desired position while maintaining even pressure. This should be done in such a manner as to squeeze the mortar to fill the entire space between the veneer unit and the substrate, allowing excess mortar to extrude on all sides around the veneer unit. Clean excess extruded mortar with trowel and spread onto the next veneer unit to be installed.

Alternate method for thin brick, tile, calcium silicate unit and stone installations: key UltraBond Veneer Mortar Adhesive into the substrate thoroughly. Then, comb on additional mortar with the notched side, use 1/4″ x 3/8″ (6 mm x 9 mm),1/2″ x 1/2″ (12 mm x 12 mm) loop or notch trowel. Back butter all thin brick, veneer units 8″ x 8″ (200 mm x 200 mm), ¾ (19 mm) loop trowel or larger to provide full bedding of the veneer. Place veneer into the mortar and adjust to desired position. Clean any excess mortar on sides of stone or tile veneer.

Note: Use proper sized notched trowel to ensure full bedding of the stone veneer. Spread only enough mortar for maximum coverage with tile within 15–20 minutes. Trowel notch size determined by contractor, size of veneer and job-site coverage. Adjust as necessary. Check mortar for complete coverage by periodically removing veneer unit and inspecting the transfer onto substrate and back of the stone veneer. The size and weight of the veneer will vary. Due to job site conditions and differences in finish material types; ledger boards, shims, wedges or spacers may be required to maintain finish levels and heights.

Grouting/Pointing (if required) – When required, point installation after a minimum of 24 hours curing time at 70°F (21°C). With an approved premium grout or mortar.

Clean Up—Tools and equipment can be cleaned with soapy water while the UltraBond is still wet.

If sanding or scraping are performed, ventilate work area and/or use a NIOSH/MSHA-approved respirator in accordance with our Safety Data Sheet.

Product description information and basic uses etc.

Information contained in this product data sheet conforms to the standard detail recommendations and specifications for the installation of Master Wall® Inc. products and is presented in good faith. Master Wall® Inc. assumes no liability, expressed or implied as to the architecture, engineering, or workmanship of any project. This information may be concurrent with, or superseded by other applicable documents, such as specifications and details. Contact Master Wall® Inc. for the most current product information.

Health & Safety
Causes eye damage and skin burns if not used properly.
Precautionary Statement
Wear protective gloves/protective clothing/eye protection/face protection. Wash face, hands and any exposed skin thoroughly after handling. Do not eat, drink or smoke when using this product. Contaminated work clothing must not be allowed out of the workplace. Do not breathe dust/fume/gas/mist/vapors/spray. Use only outdoors or in a well-ventilated area.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Get immediate medical attention.
Skin Contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Wash contaminated clothing before reuse. If skin irritation or rash occurs get medical attention.
Inhalation: If inhaled, remove to fresh air. If not breathing, give artificial respiration or give oxygen by trained personnel. Seek immediate medical attention.
Ingestion: Call a POISON CENTER or doctor if you feel unwell. Rinse mouth. Do NOT induce vomiting.
Store locked up. Dispose of contents/container in accordance with Local, State, Federal and Provincial regulation.
Spills: Prevent further leakage or spillage if safe to do so. Clean up powdered material with vacuum equipped with HEPA filter.
Disposal: Dispose of in accordance with local, state or federal regulations.
Warning: KEEP CONTAINER CLOSED WHEN NOT IN USE. KEEP OUT OF THE REACH OF CHILDREN. NOT FOR INTERNAL CONSUMPTION. FOR INDUSTRIAL USE ONLY. Consult the Safety Data Sheet (SDS) in the Products section at masterwall.com for further health and safety information.

This product is subject to a written limited material or system warranty. Obtain a warranty from the Tech Support tab of our website. Refer to Specifications for more complete information on proper use and handling of this product.

Additional Information