Project Details
Client :
Domestic Client
Category :
Concrete Repair
Location :
Sheffield, UK
Date :
June 2022
Repairing a Balcony to Ensure Safety and Longevity
In residential construction, maintaining the integrity of outdoor structures is vital for safety, aesthetics, and longevity. This project in Sheffield highlighted Total Specialist Maintenance’s (TSM) expertise in repairing a balcony for a domestic client affected by chloride and carbonation attacks.
The Challenge
The client required urgent repairs to a balcony that had been compromised by both chloride and carbonation damage. This deterioration not only posed safety risks but also threatened the longevity of the structure. Key challenges included:
- Assessing Damage: Identifying the extent of the chloride and carbonation damage to ensure that all compromised areas were effectively addressed.
- Restoring Structural Integrity: Implementing a comprehensive solution that would restore the balcony’s structural integrity and prolong its lifespan.
The Solution
TSM collaborated with Sika to implement an effective repair strategy that involved several critical steps:
- Breaking Out Defective Concrete: The initial phase involved carefully removing damaged concrete and existing render from the balcony. This preparation was essential to expose sound material for effective repairs and ensure a solid foundation.
- Grit Blasting: Following the removal of defective concrete, grit blasting was employed to eliminate all existing coatings and contaminants from the steel reinforcement. This cleaning process ensured optimal bonding for the subsequent repair materials.
- Priming the Steel Reinforcement: TSM applied SikaTop® Armatec®-110 EpoCem to the cleaned steel reinforcement. This primer enhances adhesion between the steel and the repair mortar, providing a strong bond essential for long-lasting repairs.
- Repairing the Structure: For the restoration of the balcony, TSM used Sika 4012 low-carbon concrete repair mortar. This specialised mortar was chosen for its effectiveness in restoring structural integrity while being environmentally friendly.
- Applying MCI Impregnation Coating: TSM utilised Sika FerroGuard 903, an impregnation coating designed to provide additional protection against chlorides. This step is crucial in preventing future corrosion and extending the lifespan of the balcony.
- Fairing Coat Application: To achieve a smooth and level surface, TSM applied Sika Monotop 3020 as a fairing coat. This ensured that the balcony was not only structurally sound but also visually appealing.
- Anti-Carbonation Paint System: Finally, TSM finished the project with Sikagard 550W, an anti-carbonation paint system that protects against carbonation. This protective layer is vital for preventing future damage and maintaining the integrity of the concrete.
