Task at Hand
The Laheq Island Crossing is a major infrastructure project within the Red Sea Global development — a coastal road and bridge linking the mainland to Laheq Island for residents, resorts, and supporting services. It qualifies as a mega development for its vast size and pivotal contribution to Saudi Arabia’s Vision 2030 luxury-tourism plans.
The key challenge was building durable infrastructure in a highly aggressive marine environment: the bridge spans tidal and splash zones, exposing materials to seawater, high humidity, and elevated application temperatures. The project demanded a specialized protection system resisting CO₂ diffusion, controlling water vapor, reducing chloride penetration, and bridging static cracks — with fire-performance compliance and tolerance of concrete surface irregularities.
KingKrete Solution
KingKrete developed a tailored protection system with distinct approaches for normal exposure areas and the more demanding tidal/splash zones — hydrophobic primers, advanced acrylic systems, polyurethane–epoxy hybrids, and high-strength repair mortars.
Surfaces were treated with a silane/siloxane-based hydrophobic primer penetrating deeply into the concrete — reducing water and chloride ingress while allowing vapor diffusion. A top coat of KingCoat A formed a strong, impermeable protective film resisting carbonation and weathering. Together they protect 171,000 m² of surface area.
KingRep EP10, a high-strength solvent-free epoxy repair paste, treated blowholes, cracks, and irregularities to create a sound substrate. Surfaces were then coated with KingCoat EPU100, a hybrid epoxy-polyurethane coating — exceptional adhesion, mechanical strength, and impermeability, highly resistant to chemicals, abrasion, algae, bacteria, and UV. Applied across 36,000 m².
This comprehensive approach delivered superior durability, adhesion, and protective performance, ensuring the bridge withstands aggressive coastal conditions for years to come.
Products & Quantities
| Product | Quantity Supplied |
|---|---|
| KingCoat Primer A | 1,429 pails (18 litre) |
| KingCoat A | 7,232 pails (18 litre) |
| KingRep EP10 | 1,540 sets (5 kg) |
| KingCoat EPU100 | 1,488 sets |