The project presented unique technical and operational challenges:
• Severe cracking and water leakage across multiple points of the RCC dome.
• Compromised drainage system, accelerating water ingress and concrete decay.
• Fragile surface prone to chipping and damage from previous repair attempts.
• Restricted working hours (only after school hours) and strict pollution control norms limiting work windows.
• Unpredictable rainfall causing reapplication delays and surface failures.
• The need to retain the heritage terracotta appearance while delivering long-term waterproofing and structural safety.
Makphalt executed a multi-layered restoration and waterproofing system, combining advanced repair materials and high-performance coatings:
• Damaged sections rebuilt using Mak Microcon (high-strength microconcrete, >40
MPa) and Mak SBR Latexfor flexibility and adhesion.
• Mak Plast ShotCrete 401 accelerator enabled fast-setting guniting even in winter,
reducing early curing time to 15–30 minutes.
• A 20–40 mm shotcrete layer with Mak Crete MWP polymer provided structural
flexibility and crack resistance.
• Surface finished with Mak Polytop PMM polymer-modified mortar to smooth
contours and enhance durability.
• Application of Mak Elastothane EMB (black PU base coat) with Mak Polyscrim
Cloth reinforcement for crack bridging up to 2 mm.
• Top finish with Mak Elastothane EMW-WB (UV-resistant, water-based PU coating)
in terracotta color, restoring heritage aesthetics.
• Structural Integrity Restored: Verified by the consulting structural engineer, confirming long-term safety and strength.
• Comprehensive Waterproofing: Leak tests confirmed 100% watertightness post-application.
• Aesthetic Revival: The dome’s original terracotta look was preserved and enhanced.
• Sustainable Maintenance: A long-term maintenance contract was established to ensure easy future touch-ups and inspection.
• Client Satisfaction: The Modern School Board appreciated Makphalt’s technical expertise, site discipline, and respect for heritage conservation.
MAK POLYPLAST SUPERLAY MINERAL FINISH is a five-layer polymeric waterproofing membrane featuring a 160 GSM non-woven polyester mat as its central reinforcement. SBS/APP polymer-modified bitumen is provided on both sides of the reinforcement to deliver high softening point, heat resistance and waterproofing performance.
The membrane incorporates a thermofusible high-molecular HDPE film on one side and UV-resistant mineral granules on the other side. Its polymeric construction provides 60% elongation and high tensile strength to accommodate structural movement and adapt to different contours.
MAK POLYPLAST SUPERLAY ULTRA is a high-performance SBS-modified elastomeric bituminous waterproofing membrane reinforced with a heavy-duty non-woven polyester and additional protective fleece layer.
The membrane features an engineered mineral crystal finish on the upper surface and a heat-activatable thermofusible film on the underside. It is designed to develop a continuous and uniform bond with freshly poured structural concrete, providing resistance against hydrostatic pressure and mechanical stresses.
Special selvedge technology enables secure side-lap welding using torch application or hot-air welding.
MAKFELT is a bitumen-treated hessian-base waterproofing felt conforming to IS 1322-1993. It consists of a continuous hessian sheet uniformly treated with bitumen and finished with mineral powder to prevent sticking between layers and provide additional surface protection.
MAKFELT is designed to be used as part of a built-up bituminous waterproofing system, with bitumen layers applied above and below the felt.
Real-World Applications of Makphalt's High-Performance Solutions
