Business Details
29 Years
experience
Emergency
services
Trusted Structural Waterproofing Solutions in the UK
Cast Contracting Ltd (CCL) is the UK's leading specialist in structural waterproofing and ground gas systems, established in 1997. Our expertise spans design, supply, and installation of waterproofing, tanking, and gas protection solutions for residential, commercial, and civil engineering projects. We adhere to British Standards BS8102 and BS8485, offering comprehensive guarantees backed by 10 million Professional Indemnity Insurance. Our in-house team of C.S.S.W-qualified designers and experienced project managers ensures compliance with industry regulations and client-specific requirements.With partnerships across leading manufacturers like GCP and RIW, we deliver tailored solutions for new builds and refurbishments. Our commitment to quality is evidenced by successful projects at landmarks such as The Royal Opera House and The British Museum. We maintain transparency through technical documentation and collaborate with warranty providers including NHBC and LABC to ensure long-term client satisfaction.
Services
Basement Waterproofing
Ground Gas Membranes
Podium Waterproofing
Trafficable Coatings
Water Management Systems
Concrete Repair
Details
- Year established: 1997
Highlights and features
- We have over 25 years of experience in structural waterproofing and gas protection.
- Our in-house C.S.S.W-qualified design team ensures BS8102 and BS8485 compliance.
- We offer 10 million Professional Indemnity Insurance for project security.
- Our comprehensive guarantees include insurance-backed options for long-term assurance.
- We collaborate with leading manufacturers to specify optimal waterproofing systems.
Associations and certifications
- Property Care Association (PCA)
What people say
24-hour installation service
Highest professional standard
Professional, helpful, thorough
Cost-effective solutions
No issues since completion
Services
Basement Waterproofing
We design and install basement waterproofing systems compliant with BS8102 standards. Our solutions combine Type A barrier membranes and Type C cavity drain systems to prevent water ingress in residential and commercial structures. Backed by 10 million PI insurance, we ensure long-term protection for new builds and refurbishments.
Ground Gas Membranes
Our ground gas membranes protect against methane, carbon dioxide, and radon in contaminated sites. Compliant with BS8485, these systems include site-specific risk assessments and independent verification to CIRIA735 standards. Ideal for brownfield developments requiring hazardous gas protection.
Podium Waterproofing
We provide podium deck waterproofing for terraces and balconies using liquid coatings and cementitious systems. Solutions meet trafficable load requirements and integrate with drainage systems to ensure durability in high-traffic areas like hotels and commercial complexes.
Trafficable Coatings
Our trafficable coatings offer durable, slip-resistant surfaces for car parks and plant rooms. Applied with chemical-resistant materials, these systems withstand heavy vehicle use while maintaining waterproof integrity beneath structures.
Water Management Systems
We design integrated water management systems including sump pumps and attenuation tanks. These systems control groundwater pressure and prevent flooding in basements and subterranean structures, ensuring compliance with site hydrology requirements.
Questions
What standards do your waterproofing systems comply with?
Our systems adhere to BS8102, BS8485, and CIRIA735 standards, with compliance documentation available for warranty providers like NHBC and LABC.
Do you offer standalone design services?
Yes, our C.S.S.W-qualified designers provide project-specific proposals, including drawings and risk assessments, as a standalone service or with installation.
How do you handle emergency waterproofing needs?
We provide 24-hour installation services for urgent projects, as demonstrated in our work at Friars Walk and The Royal Opera House.
What guarantees do you offer?
We provide bespoke company guarantees backed by insurance, covering structural waterproofing and gas protection systems for up to 24 years.
Which sectors do you specialise in?
We work across residential, commercial, and civil engineering sectors, including listed buildings, hotels, museums, and transport infrastructure.
Can you assist with warranty provider requirements?
Yes, our team prepares technical submissions for NHBC, Premier Guarantee, and LABC to ensure full sign-off for waterproofing elements.
