Business Details
41 Years
experience
Premium Waterproofing Solutions for All Roof Types
We are ICB (Waterproofing) Limited, the UK's leading provider of waterproofing solutions and exclusive distributor of alwitra membranes. With nearly 40 years of experience, we have waterproofed over 180 million square metres of flat roofs globally. Our products, including the EVALON range of single-ply membranes, are trusted by architects, contractors, and developers for their durability, fire-retardant properties, and environmental efficiency.We offer a 25-year guarantee on our systems, supported by specialist advice, express national delivery, and comprehensive installer accreditation programmes. Our technical expertise ensures tailored solutions for complex architectural projects, from historic landmarks to modern commercial developments.
Services
Single-Ply Membranes
Aluminium Profiles
Daylight Systems
Roof Drainage
Flat Roof Vents
Accessories
Details
- Year established: 1985
Highlights and features
- 25-year guarantee on all waterproofing systems
- 40 years of UK waterproofing expertise
- BREEAM-registered, environmentally efficient products
- Nationwide network of accredited installers
- Tailored solutions for complex architectural projects
Associations and certifications
- BREEAM
What people say
25-year guarantee
Excellent detailing performance
Superior fire-retardant properties
Versatile single-ply system
Professional back-up
Services
Single-Ply Membranes
Our single-ply membranes provide durable, bitumen-free waterproofing for flat and complex roofs. These UV-stable, root-resistant systems offer fire load reduction and thermal efficiency. With a 50-year service life and 25-year guarantee, they suit green, brown, or blue roof applications. Available in multiple colours, they combine cost-effectiveness with BREEAM-registered sustainability, ideal for architects and contractors seeking reliable, cold-applied solutions.
Aluminium Profiles
High-quality aluminium profiles ensure secure, weatherproof roof edges and cappings. Our TA-4F and TAG Edge Trim systems feature patented adjustable brackets to prevent wind uplift and thermal stress. Designed for new builds and refurbishments, these corrosion-resistant profiles provide tension-free flashing and seamless integration with single-ply membranes, ensuring long-term durability in commercial and residential projects.
Daylight Systems
Our daylight systems combine natural illumination with thermal insulation. The alwitra Dayluxe Window and Multi-Shell Rooflight ranges enhance energy efficiency while maintaining waterproof integrity. These solutions reduce reliance on artificial lighting, offering adaptable designs for commercial buildings, educational facilities, and heritage sites without compromising structural protection.
Roof Drainage
Comprehensive drainage solutions prevent water accumulation on low-sloped roofs. Products include horizontal and vertical rainwater outlets, emergency overflow systems, and terrace grates. Engineered for compatibility with single-ply membranes, these components ensure rapid water evacuation, minimising structural stress and prolonging roof lifespan in both urban and coastal environments.
Installer Accreditation
Our accreditation programme certifies installers in best practices for membrane application. Participants receive technical training, marketing support, and access to exclusive business leads. Accredited partners benefit from ongoing technical assistance and priority listing in our national installer directory, ensuring quality assurance for clients and enhanced credibility for contractors.
Questions
What types of roofs are alwitra® membranes suitable for?
Our membranes work on flat, curved, sloped, mansard, and dormer roofs. They integrate with green, brown, or blue roof systems, offering UV stability and root resistance for diverse architectural needs.
Do alwitra® products meet environmental standards?
Yes, our BREEAM-registered membranes are bitumen-free, solvent-free, and cold-applied. They feature low volatile plasticisers and high chemical resistance, ensuring sustainability without compromising performance.
How can I find an accredited installer?
Use our online locator tool to find approved contractors in your area. All accredited installers undergo rigorous training and receive ongoing technical support for quality assurance.
What guarantees apply to alwitra® systems?
We offer a 25-year guarantee on all waterproofing systems. This covers material defects and performance when installed by accredited professionals, supported by our 40-year industry expertise.
Can I get technical support for complex projects?
Yes, our team provides specialist advice on system selection, detailing, and compliance. We offer site-specific solutions for challenging architectural projects, including historic and commercial buildings.
