Website
Business Details
39 Years
experience
Trusted Remedial Building Contractors in Sydney
Established in 1987, Andersal is a leading Sydney-based remedial building contractor with over three decades of expertise in structural and facade restoration, concrete repairs, and waterproofing. Our team of professional engineers and licensed builders specializes in diagnosing root causes of structural damage to deliver long-term solutions for commercial, strata, and industrial clients. With a 10-year structural warranty on workmanship and ISO 45001 certification for occupational health and safety, we prioritize durability, quality, and minimal site disruption.

Our extensive experience includes government contracts, heritage restorations, and complex access solutions, supported by a proven track record of client satisfaction. We maintain full statutory insurance compliance and hold a NSW Home Warranty Insurance reduction for client cost savings. Our commitment to technical excellence and safety has earned us recognition from consulting engineers, asset owners, and facility managers across Australia.
Services
Concrete Repair Structural Restoration Facade Refurbishment Waterproofing Heritage Restoration
Details
  • Year established: 1987
Highlights and features
  • 30+ years of specialized experience in remedial building solutions
  • ISO 45001-certified safety management systems with BSI audits
  • 10-year structural warranty on all workmanship
  • Expertise in complex access solutions and heritage restoration
  • Proven track record with government and industrial contracts
Associations and certifications
  • ISO 45001
  • British Standards Institute
Services
Concrete Repair
Our concrete repair specialists address concrete cancer and spalling through steel reinforcement replacement, chemical treatments, and protective coatings. We use advanced diagnostics to identify moisture penetration causes and apply durable solutions that prevent future structural degradation. This service protects building integrity while avoiding costly emergency repairs.
Structural Repair
We diagnose and repair structural damage using crack injection, carbon fibre strengthening, and cathodic protection systems. Our engineers assess load-bearing capacity issues and implement solutions like lintel replacement and joint sealing to restore buildings to original safety standards while maintaining operational continuity.
Facade Refurbishment
Our facade services combine structural integrity upgrades with aesthetic improvements. We handle balustrade replacement, brickwork repointing, and protective coatings while addressing underlying waterproofing issues. This comprehensive approach maintains building safety and enhances property value through modernized exterior systems.
Waterproofing
We implement advanced waterproofing systems for balconies, car parks, and concrete roofs using high-performance membranes and sealants. Our solutions address concrete movement-related cracks and moisture ingress, preventing 83% of common building defects while extending structural lifespan through sustainable application methods.
Heritage Restoration
Our heritage specialists work with artisans to restore culturally significant structures using traditional techniques and materials. We balance conservation requirements with modern safety standards, offering cost-effective solutions like epoxy granite repairs that maintain architectural integrity while addressing structural deterioration.
Questions
What types of buildings do you service?
We specialize in commercial, industrial, strata, and heritage buildings across Sydney and NSW.
Do you offer warranties on your work?
Yes, we provide a 10-year structural warranty on all workmanship.
How do you handle complex access requirements?
Our industrial abseiling techniques allow safe access to challenging areas without disrupting operations.
Are you certified for safety standards?
We maintain ISO 45001 certification through regular British Standards Institute audits.
Can you handle heritage building repairs?
Yes, we have specialized teams for heritage restoration projects with historical sensitivity.
What insurance coverage do you have?
We carry full workers compensation, public liability, and home warranty insurance.