Complete Building Repair Services Injection grouting Protects your roof and basement from leakage, seepage and dampness, keeping the structure dry and durable. Structural repair Specialized waterproofing for STP and underground water tanks to prevent leakage, contamination and structural damage. Masonry repair Fills hidden cracks and voids in concrete with high-strength grout to stop seepage and restore structural stability. Crack repair Repairs damaged columns, beams, slabs and brickwork to extend the life and safety of your building.