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🧱 Exterior Mortar Patch – Flexible Masonry Repair Compound
Seal cracks. Restore surfaces. Built to last.
This versatile patching compound is specially formulated to repair cracks in mortar, stucco, artificial stucco, and concrete, while remaining flexible and durable over time. It adheres strongly to a wide range of surfaces and resists drying out or becoming brittle.
🔧 Product Features:
- Ideal for repairing cracks in mortar, stucco, and concrete
- Stretches and flexes for a long-lasting, weather-resistant seal
- Adheres excellently to wood, concrete, brick, stone, block, and other masonry surfaces
- Dries to a natural concrete color for seamless blending
- Easy to apply with a trowel or caulking gun
- Cleans up with soap and water
- Made in the USA
Perfect for exterior repairs around chimneys, foundations, walls, and masonry joints.
🧱 Exterior Mortar Patch – Flexible Masonry Repair (Cartridge)
Seal cracks. Restore surfaces. Built to last.
This elastomeric patching compound is designed to repair cracks in mortar, stucco, artificial stucco, and concrete, while remaining flexible and durable over time. Packaged in a convenient cartridge, it’s easy to apply and dries to a natural concrete color for seamless blending.
🔧 Product Features:
- Repairs cracks in mortar, stucco, and concrete
- Stretches and flexes—won’t dry out or become brittle
- Adheres to wood, brick, stone, block, concrete, and other masonry surfaces
- Dries to a natural concrete/mortar color
- Easy cartridge application—compatible with standard caulking guns
- Soap and water cleanup
- Made in the USA
Perfect for exterior repairs around chimneys, foundations, masonry joints, and more.
🧱 Exterior Mortar Patch – Application Instructions
Ensure proper adhesion and a long-lasting repair by following these steps:
🧼 Surface Preparation
- Chip away all cracked and loose mortar using a chisel or masonry tool
- ⚠️ Wear safety goggles to protect eyes from debris
- Brush joints thoroughly with fresh water or mist with a spray bottle
- This removes residual dust and prevents the existing mortar from drawing moisture out of the new patch
🎨 Application
- Apply mortar using a pie-shaped trowel for traditional joints or a caulking gun for precision and ease
- Fill critical joints first, especially vertical seams, followed by horizontal joints
- Smooth and shape the mortar to match surrounding surfaces for a uniform finish
- Allow to air cure—product remains flexible and will not become dry or brittle over time
- Dries to a natural concrete color and is paintable once cured
🧽 Cleanup
- Clean tools immediately after use with soap and water, scrubbing with a stiff brush if needed
🧱 Exterior Mortar Patch – Application & Curing Instructions
Ensure a strong, flexible, and long-lasting seal by following these steps:
🧼 Surface Preparation
- Chip away all cracked and loose mortar using a chisel or masonry tool
- ⚠️ Wear safety goggles to protect eyes from flying debris
- Brush joints with fresh water or mist with a spray bottle
- This removes dust and prevents the existing mortar from drawing moisture out of the new patch, which can lead to cracking or brittleness
🎨 Application
- Apply mortar using a pie-shaped trowel or caulking gun for precision
- Fill critical vertical joints first, followed by horizontal seams
- Smooth and shape the mortar to match surrounding surfaces
- Product dries to a natural concrete color and remains permanently flexible—won’t dry out or become brittle
💧 Curing & Aftercare
- After application, spray water lightly on the repaired area to aid curing
- You can repeat this daily for 2–3 days to maintain moisture
- Cover the patched area with plastic sheeting or a damp cloth for a couple of days to slow evaporation and promote proper curing
- If the patch appears cracked or brittle, it likely means insufficient moisture was present in the old brick or mortar during application
🧽 Cleanup
- Clean tools immediately after use with soap and water, scrubbing with a stiff brush if needed