CRC 121 Concrete Filler Two Part Epoxy Putty For Permanent Watertight Repairs On Concrete Brick Plaster DIYers
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Estimated delivery time: 2-3 days
CRC 121 Concrete Filler 750g is a two‑part silica‑based epoxy putty engineered for permanent, watertight repairs on concrete, brick, mortar and plaster. When you mix the two components, you get a highly workable putty that can be moulded by hand or with a damp tool to fill cracks, holes, and joints, delivering a smooth, seamless patch that blends with the surrounding substrate.
What makes CRC 121 stand out is its hardened, durable cure. Once set, the repair is significantly harder and more impact resistant than ordinary concrete, yet it preserves a concrete-like appearance in both texture and colour. It also boasts excellent chemical and UV resistance, helping patches stay strong in exposed or challenging environments. A standout feature is its ability to cure watertight and to adhere to wet surfaces, making underwater repairs and repairs to submerged substrates practical and reliable.
Key advantages of CRC 121 Concrete Filler 750g
- Permanent, watertight repairs with a smooth finish on concrete, brick, mortar and plaster
- Adheres to wet surfaces and is suitable for underwater repairs
- Cured material is harder than concrete with strong impact resistance
- Appearance and texture closely resemble new concrete for inconspicuous repairs
- Excellent chemical and UV resistance for long-term performance
- Easy to work with in its uncured state—mouldable with water for precise shaping
Ideal uses and scenarios
Use CRC 121 Concrete Filler 750g to seal leaks in foundations, repair damaged concrete floors, restore brick and mortar joints, and fix holes or voids in submerged structures such as pools, water tanks, or damp basements. Its ability to cure on wet surfaces and underwater makes it a practical choice for maintenance crews, builders, and DIY enthusiasts tackling difficult water‑exposed repairs where conventional fillers fall short.
How to use (quick guide)
- Prepare the area and mix the two parts of CRC 121 until you achieve a uniform putty.
- Press and shape the putty into cracks, holes, or joints, using a damp finger or tool to achieve a smooth, even finish.
- Allow the material to cure; the repair will become watertight and noticeably harder than the surrounding concrete.
Specifications
- Pack Size: 750g
- Product Code: 1751844
- Dimensions: Height 14.30 cm × Width 7.00 cm × Depth 7.00 cm
- Weight: 0.96 kg
- Appearance: similar consistency and colour to new concrete