Starpatch STPSPPM#2 – 22.7 kg SupaPatch Patching Mortar #2

SupaPatch Patching Mortar #2 is a versatile, single-component concrete repair system engineered for multi-directional application. This 22.7 kg formulation accommodates depths from feathered edges to 5/8 inch, performing reliably on horizontal, vertical, and overhead surfaces across interior and exterior substrates. Beyond patching, it functions effectively as a sacking mortar. The compound is formulated without gypsum, chlorides, ferrous metals, or corrosive agents, ensuring durability and compatibility with sensitive applications. For wear-surface applications, a protective sealer or coating is recommended to maximize service life.

Primary Applications / Features / Benefits

• Patching and repairing of imperfections, bugholes, and honeycombs on concrete structures.
• Exterior & interior vertical, overhead, and horizontal surfaces.

Application

Apply Supa - Patch into the repair zone substrate by compacting the material well against the properly prepared substrate. Finish the surface with a steel or wood trowel, or sponge float. Repairs greater than 5/8” should be done in multiple lifts. Tie holes should be dry packed and then finished with a thin layer of normal consistency mortar. Protect the repaired area from very hot direct sunlight. The temperature at the time of application may not be lower than 5°C/41°F.

Compressive Strength

(CAN/CSA-A5, ASTM C109)

• 3 Days: 23.8 MPa
• 7 Days: 35.7 MPa
• 28 Days: 40.9 MPa
• 3450 Psi
• 5175 Psi
• 5829 Psi

• Bad and off-set joints.
• Low spots on slabs to a maximum depth of approximately 5/8”.
• User friendly. Just add water to the powder mix and stir.
• Available in 3 different shades of Concrete Grey.
• Superior bonding and adhesion properties.
• Low shrinkage.

Surface Preparation

Surfaces to be covered must be structurally sound, clean, and free of dust, oil, grease, sealers, curing compounds, laitance, release agents, or other surface contaminants. Where possible, cut vertical shoulders at edges to accommodate repair. For smooth surfaces, mechanical abrasion is recommended to achieve an acceptable surface profile. The cleaning and preparation method selected depends on both the sub-floor material and its condition. Acid etching is not recommended. Starpatch 900X bonding agent should be used on the substrate for optimal adhesion. Allow the bonding agent to become dry or tacky before applying Supa - Patch.

Mixing Instructions

Add Supa - Patch powder to the measured water. Using a mixing paddle (a whip or eggbeater type is recommended) with a low-speed drill (400 to 500 rpm), mix thoroughly (2 to 3 minutes) until the powder has been completely dispersed and the mix has acquired a smooth homogeneous texture. Do not add more water once Supa - Patch has started setting up. Add approximately 18% water by volume or about 4 litres of water per bag. For added strength and adhesion, you may substitute some of the water with 1 litre of 900X per bag. Be sure to put water in your mixing container first and then add the dry powder.