Heritage Experience. Architectural Rigour.
Velziyn Projects Limited is a specialist British contractor focused on period timber window restoration, repair, replication, and conservation fenestration across London and the UK.
Specialist Timber Window Contractors
Velziyn Projects Limited (Company No. 16553578) is an active Private Limited Company operating across London and nationwide on prestigious heritage landmarks.
We combine unrivalled heritage experience, traditional bench-joinery craftsmanship and modern materials science to deliver exceptional conservation outcomes. From consultation and condition surveys through to bespoke manufacture, Draftfix draughtproofing, and Repair Care DRY FLEX® timber stabilisation, we provide a complete, end-to-end service.
Our team works collaboratively with conservation officers, architects, developers, and main contractors including Keepmoat and TRC Contracts Ltd to ensure every scheme respects the historic built environment while achieving modern thermal and acoustic compliance.
Collaborative Delivery Partners
Registered Information
Six Guiding Principles
The core disciplines that direct our technical methodology across every condition survey, joinery replication, and installation.
Heritage Experience
Specialist knowledge working with period fenestration, conservation parameters, and historic architectural profiles.
Traditional Craftsmanship
Bench-joinery skills, careful timber splicing, profile matching, and traditional mechanical balancing techniques.
Advanced Technology
Integration of precision polymer repair compounds, tested peripheral draught-seals, and vacuum or slim-profile insulated glazing units.
Quality Assurance
Rigorous quality controls throughout survey, defect diagnosis, timber stabilization, and multi-coat protective finishes.
Sustainable Approach
Prioritizing repair over replacement to preserve historic embodied carbon, combined with thermal upgrades to lower in-use operational emissions.
End-to-End Delivery
Structured collaboration with conservation officers, architects, surveyors, and principal contractors from initial survey to sign-off.
Professional Credentials
We maintain the accreditations, documentation and H&S management that professional clients, main contractors and schools require.
CHAS Accredited
Demonstrated compliance with standard health and safety criteria through accredited contractor assessment.
Constructionline
Formal pre-qualification assessment underway. Current status: Application / Approval Pending.
BrightHR / BrightSafe
Comprehensive workplace Health & Safety management, competent advice support, and continuous compliance oversight.
Enhanced DBS Checked Operatives
Enhanced Disclosure and Barring Service vetting completed for operational delivery across educational, civic, and sensitive residential environments.
CSCS Competent Operatives
Site operatives hold verified Construction Skills Certification Scheme qualifications appropriate to specialist heritage joinery works.
RAMS & Strict Policies
Comprehensive site-specific Risk Assessments & Method Statements produced for every stage of restoration, scaffolding, and installation delivery.
Our 6-Stage Delivery Process
Transparent, accountable methodology ensuring minimal disruption and full conservation compliance.
Initial Consultation
A detailed client discovery conversation to understand project scope, heritage constraints, specification requirements and programme.
Condition Survey
A non-invasive technical inspection of existing window stock using professional defect logging and conservation assessment.
Specification & Quotation
A precise, itemised scope of works and quotation developed in line with survey findings, CAD section drawings and client requirements.
Consent & Compliance
Close liaison with conservation officers, local planning authorities and architects to secure Listed Building and Conservation approvals.
Controlled Delivery
Phased, supervised on-site delivery using CSCS-certified operatives, RAMS-controlled methodology and structured project management.
Final Inspection & Sign-off
Formal sign-off inspection against specification, defects resolution, handover documentation, guarantees and aftercare guidance.
Have a Heritage Window Project?
Whether you have a single window or a large programme of works, our team will provide a professional, detailed response to your enquiry.