Swan House
Rainscreen Cladding project.
Stoneguard Projects Ltd · Company 04883308 · Trading heritage since 1963
Active, accounts up to date·main contractor & subcontractor·Head office London
Stoneguard, established in 1963, is a specialist building envelope contractor with a strong heritage in high-quality restoration and cleaning of historic building façades. Over six decades, the company has evolved to incorporate a comprehensive range of cladding and render solutions, alongside exclusive lightweight steel framing systems. Innovation and excellence are central to their operations, delivering exceptional results for both historic and contemporary projects.
With a team of over 150 skilled operatives led by Managing Director Nic Constantine, Stoneguard has built a reputation for high-quality craftsmanship and client commitment. They handle projects from aesthetic renovations to complete structural refurbishments, offering tailored services and unique solutions. Their extensive capacity allows them to undertake large and complex projects, ensuring consistent quality and client satisfaction.
Stoneguard's core values of collaboration, commitment, and innovation guide their work with clients and supply chain partners. They pride themselves on building strong, trusted relationships, with a significant portion of their business coming from repeat custom and recommendations. The company also emphasizes community and social value, supporting local initiatives and training opportunities.
Health and safety are paramount, managed by an appointed consultant with rigorous compliance measures. All personnel are trained and competent, holding relevant certifications. Stoneguard holds FIRAS third-party accreditation for passive fire resisting products, underscoring their dedication to quality and compliance.
Rainscreen Cladding project.
Rainscreen Cladding project.
Rainscreen Cladding project.
Rainscreen Cladding project.
Rainscreen Cladding project.
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Alcema.
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Specialist building envelope contractor since 1963, offering restoration, maintenance, light gauge steel framing, rainscreen cladding, cladding remediation, and render & EWI systems. Their listed services include Restoration & heritage, Cladding, Refurbishment, Steel erection and Damp proofing.
Stoneguard Projects Ltd is registered at 590 Green Lanes, London, N13 5RY, in London.
Stoneguard Projects Ltd states that it works across London and M25 Area.
Accounts filed for the year to 2025 report 18 employees, which places the company in the 10-49 employees band.
Stoneguard Projects Ltd does not disclose turnover: UK small-company accounts are not required to. Based on creditors in its filed accounts, turnover is likely to fall between £4.9m and £20.0m. This is an estimate, not a filed figure.
Companies House lists Stoneguard Projects Ltd as active, with accounts most recently made up to 2025-09-30.
Stoneguard Projects Ltd displays FIRAS on its website.
Stoneguard Projects Ltd works in Public, Education, Commercial and Residential.
Stoneguard Projects Ltd was incorporated on 2003-09-01, though the company says it has traded since 1963.
Planyard keeps budgets, committed costs and variations live, so the figure in front of you is today's rather than last month's.