Business Details
50+ Years
experience
Premium Concrete Roofing Products in Castleford
Established in 1970, Celstone Concrete Roofing Products has been a trusted name in the roofing industry for over five decades. Initially formed as the manufacturing division of a family-run roofing business, we transitioned to the Celstone brand in 2000, consolidating our expertise in producing concrete and glass fibre-reinforced cement (GRC) roofing solutions. Our team, led by directors Max Abraham, Jeremy Abraham, and David Poole, brings generations of hands-on experience in both manufacturing and roofing contracting. We specialize in crafting ridge tiles, ventilators, crests, and ornamental finials using modern extrusion techniques and traditional hand-moulding methods. Addressing shortages in natural quarried materials, we developed handmade slates and tiles that replicate the aesthetic of natural stone at an affordable cost, available in standard hues like Welsh Gray and Lakeland Green or customized to client specifications. Our products comply with rigorous technical standards, including BS5534 and B.S. 5250, ensuring durability, fire resistance, and weathering performance exceeding 50 years.By combining cutting-edge technology with artisanal craftsmanship, we deliver roofing solutions that meet the demands of architects, specifiers, and builders across residential and commercial projects. Our technical team provides detailed guidance on product selection, installation, and compliance with building regulations, supported by comprehensive documentation on ventilation, fire safety, and environmental performance. With a legacy rooted in innovation and quality, Celstone remains committed to advancing sustainable roofing practices while maintaining the individuality and character that define our products.
Services
Ventilation Products
Ridge Tiles
Crested Products
Ornamental Finials
Handmade Slates
Lintels
Custom Moulding
Technical Consultation
Details
- Year established: 1970
Highlights and features
- We combine traditional craftsmanship with modern technology to create durable, lightweight roofing solutions.
- Our products comply with British Standards including BS5534, B.S. 5250, and BS476 for fire and weather resistance.
- We offer bespoke moulding services to replicate natural stone or meet unique architectural requirements.
- Our handmade slates are available in standard and custom colours, ensuring aesthetic flexibility for any project.
- We provide detailed technical guidance on product selection, installation, and compliance with building regulations.
Services
Ventilation Products
Our ventilation products, including air vents and gas terminals, are engineered to meet BS5250 standards for moisture control and airflow efficiency. The in-line air vent ridge integrates seamlessly with dry ridge systems, providing 14,000 mm free air flow per unit while maintaining aesthetic consistency. Gas vent terminals, certified to B.S. 1289 specifications, ensure safe combustion exhaust with stainless steel bird-proof grills, making them ideal for both residential and commercial roof systems.
Handmade Slates
Handcrafted from GRC, our slates replicate the texture and appearance of natural quarried stone at a fraction of its weight. Available in standard finishes like Welsh Gray, Lakeland Green, and bespoke colours, each slate is unique due to our individual casting process. They comply with BS 1014 standards for pigmentation and offer over 50 years of durability, fire resistance, and UV stability for both traditional and modern roofs.
Ridge Tiles
We produce ridge tiles in 3' and 18" lengths with angles ranging from 90 to 115, suitable for segmental, universal, and angled profiles. Available in through-body colours like Buff, Slate Gray, and Brown or with granular finishes, they adhere to BS5534 installation standards. Our ridges can be mortar-bedded or integrated with dry ridge systems for a secure, weatherproof finish.
Crested Products
Custom crested ridges and finials add architectural character to heritage and period properties. Crafted using reclaimed materials or client-provided samples, these bespoke features are available in segmented or full-length designs. They combine traditional aesthetics with modern GRC strength, providing long-lasting decorative solutions for listed buildings and conservation areas.
Technical Consultation
Our team offers specialist advice on product selection, roof pitch recommendations (minimum 22.5), and compliance with building regulations. We provide technical data on fire resistance (Class O), water vapour permeability (BS3177), and structural performance, ensuring installations meet BS5534 and B.S. 5250 standards for safety and longevity.
People
Max Abraham
Director
Max Abraham oversees Celstone's manufacturing operations, drawing on decades of experience in concrete roofing production. His expertise in extrusion processes and quality control ensures products meet stringent technical standards while maintaining aesthetic authenticity.
Jeremy Abraham
Director
Jeremy Abraham manages technical development and customer liaison, combining roofing contracting knowledge with manufacturing innovation. He specialises in addressing challenges in material supply and compliance for complex architectural projects across the UK.
David Poole
Director
David Poole focuses on operational strategy and product design, ensuring Celstone's solutions balance durability with cost-effectiveness. His background in GRC technology supports the creation of lightweight, weather-resistant roofing elements for modern and heritage buildings.
Questions
What materials are Celstone slates made from?
Our slates use glass fibre-reinforced concrete (GRC), combining hydraulic cement, fine aggregates, and alkali-resistant glass fibres for strength and weather resistance.
Can I get custom colours for ridge tiles?
Yes. While we offer standard through-body colours like Buff and Slate Gray, we can also produce ridges to match bespoke colour specifications using durable pigments.
Are Celstone products suitable for listed buildings?
Yes. Our handmade slates and crested ridges replicate natural stone textures, making them ideal for conservation areas and heritage restoration projects.
What is the minimum roof pitch required?
A minimum roof pitch of 22.5° is recommended for all Celstone slates and tiles to ensure proper water drainage and weatherproofing performance.
Do ventilation products comply with building regulations?
Yes. Our vents and gas terminals meet BS5250 and B.S. 1289 standards for airflow efficiency and safe combustion exhaust, with certification C26349.
How should products be stored before installation?
Celstone slates and tiles must be kept covered and dry on-site prior to fixing, as exposure to moisture could affect installation accuracy.
