Fri Jan 9
When specifying sash window restoration or replacement for heritage properties, the stakes are high.
A poorly executed project can compromise a building’s historical integrity, breach planning regulations and create costly remedial work.
That’s why working with properly accredited sash window specialists isn’t just advisable – it’s essential for protecting valuable heritage assets.
For architects, specifiers and heritage property managers, choosing the right sash window company means partnering with professionals who can demonstrate verified competence through recognised industry accreditations.
At TRC Contracts, our comprehensive portfolio of certifications provides assurance that projects will meet rigorous heritage, performance, safety and durability standards.
PAS 2030
TRC Contracts holds PAS 2030 certification, demonstrating our capability to deliver energy efficiency measures (EEM) to the highest industry standards. This prestigious accreditation forms part of the UK government’s strategy for improving building energy efficiency and is essential for projects requiring compliance with current building regulations or access to government funding schemes.
Our certification specifically validates expertise in Building Fabric Measures (BFM), including window installation and restoration, glazing solutions, energy-efficient retrofitting, and draught-proofing measures. This means we can balance the thermal performance requirements of modern building standards with the aesthetic and structural demands of heritage properties – reducing heat loss without compromising the appearance of period windows.
For specifiers, PAS 2030 certification provides assurance that our technical competency and quality management systems have been rigorously assessed and verified through regular UKAS-accredited audits. This independent validation ensures optimal energy efficiency outcomes while maintaining the authenticity of traditional timber sash windows.
FENSA registration – Building Regulations compliance guaranteed
As a registered FENSA Approved Installer, TRC Contracts operates under the UK’s government-authorised scheme for monitoring compliance with Building Regulations for external window and door installations in domestic properties.
This registration is particularly valuable for heritage residential projects where regulatory compliance can be complex. When we complete a window installation, clients receive a FENSA certificate confirming that the work complies with legal standards, has been registered with the Local Authority and is backed by an insurance-backed guarantee.
For property owners and managers, this certification removes the administrative burden of notifying Building Control separately and provides essential documentation for future property transactions. It confirms that installations have been completed by a professional business operating to recognised industry standards – crucial peace of mind for protecting both building value and investment.
CHAS accreditation – Health and safety excellence
TRC Contracts’ CHAS (Contractors Health and Safety Assessment Scheme) accreditation verifies that our health and safety practices meet and exceed regulatory requirements and industry best practices. Recognised throughout the UK construction industry, this certification provides independent assurance that we operate with robust health and safety management systems across all window restoration and replacement projects.
The accreditation involves rigorous assessment of our safety policies, risk assessment procedures, training programmes and incident management protocols. For architects and specifiers working on occupied heritage buildings or sensitive sites, this certification provides confidence that projects will be delivered with exemplary attention to workplace safety, legal compliance and risk management.
Our CHAS accreditation is regularly reviewed and renewed, ensuring we maintain the highest standards of health and safety performance across all operations – protecting both our workforce and building occupants throughout the project lifecycle.
Constructionline Gold – Comprehensive business validation
TRC Contracts holds Constructionline Gold membership, which validates our position as a trusted contractor in the UK construction industry. This prestigious certification incorporates rigorous assessments across multiple critical areas including environmental management, quality management, equal opportunities, Modern Slavery Act adherence, and anti-bribery and corruption policies.
For architects and specifiers, Gold membership provides additional assurance of our financial stability, business and professional standing, and commitment to sustainable practices. The certification verifies compliance with industry standards including SSIP (Safety Schemes in Procurement), environmental management standards, and quality management requirements.
This comprehensive validation streamlines the pre-qualification process for clients while demonstrating dedication to maintaining the highest standards across all aspects of operation – from health and safety to environmental responsibility and ethical business practices. For demanding heritage projects, this provides assurance of working with a financially stable, professionally managed contractor.
SafeContractor certification – Independent verification of safe practice
TRC Contracts’ SafeContractor accreditation provides further independent verification of our commitment to health and safety, sustainability, ethical behaviour and wider business practices. This widely-recognised UK certification scheme confirms we have undergone independent assessment of our policies, procedures and risk controls.
For clients, this accreditation reduces project risk and demonstrates that we meet the standards required by large-scale clients and public sector frameworks alike. When working on listed buildings or in conservation areas where access may be restricted and working conditions challenging, this certification provides confidence that operations will be managed professionally with appropriate risk mitigation measures in place.
Specialist knowledge underpinned by verified competence
Industry accreditations provide the framework, but specialist knowledge delivers results. Traditional sash windows require specific expertise that goes far beyond standard joinery – understanding historical construction methods, timber species selection, traditional sash cords, draught seals and period-appropriate hardware.
Our team conducts detailed initial surveys to assess existing window frames, identify repair requirements and determine whether restoration or replacement represents the best option. This diagnostic approach prevents unnecessary replacement of original box sash windows that could be restored to their former glory while achieving modern energy efficiency standards.
What accredited specialists deliver that general contractors cannot
Accredited sash window experts offer comprehensive repair services including timber splicing, reglazing with appropriate double glazing for energy efficiency and precise draught sealing – all while maintaining authentic detailing. Our combination of heritage knowledge and PAS 2030 certification enables us to balance thermal performance with conservation area compliance, protecting both building value and regulatory standing.
Our FENSA registration ensures that all installations in domestic properties meet Building Regulations, while our CHAS and SafeContractor certifications guarantee projects are delivered safely and professionally. This integrated approach to quality, safety and compliance is simply not available from general contractors lacking specialist accreditations.
Proven methodology from survey to completion
TRC Contracts follows a structured process for every window restoration project, validated through our quality management systems assessed under Constructionline Gold membership:
- – Survey and specification: Detailed assessment of existing traditional timber windows, identifying structural issues, decay and performance requirements
- – Heritage compliance: Ensuring all proposed work aligns with conservation area guidance and Listed Building requirements
- – Energy efficiency integration: Applying our PAS 2030 expertise to optimise thermal performance while maintaining heritage authenticity
- – Skilled restoration: Undertaken by trained craftspeople experienced in repairing Victorian homes, Georgian properties and other period buildings
- – Quality and safety assurance: Rigorous inspection protocols before, during and after installation, validated through CHAS and SafeContractor frameworks
- – Regulatory compliance: FENSA certification for domestic installations, ensuring full Building Regulations compliance and documentation
This methodology ensures clients receive expert guidance at every step, from initial consultation through to project completion, with independent verification of quality, safety and compliance throughout.
Long-term performance and durability
Properly restored timber sash windows can outperform new windows in longevity and serviceability. Our specialist restoration techniques, validated through PAS 2030 certification, preserve original sashes and wooden frames while improving functionality, weather-tightness and energy efficiency.
For heritage properties, this represents the best way to maintain authenticity while meeting modern performance standards. Timber windows treated by accredited specialists continue to function effectively for decades, providing better lifecycle value than poorly specified replacements installed by unaccredited contractors.
Partner with proven, accredited sash window specialists
TRC Contracts’ comprehensive portfolio of industry accreditations combined with extensive project experience and specialist heritage knowledge, makes us the trusted choice for demanding heritage projects across commercial, institutional and residential sectors.
These certifications are not simply badges on our website – they represent independently verified competence across energy efficiency, regulatory compliance, health and safety, quality management and business practices. For specifiers, this means reduced risk, streamlined procurement and confidence that projects will be delivered to the highest professional standards.
Whether you’re specifying comprehensive sash window repair for a Listed building or managing restoration across a period property portfolio, working with properly accredited specialists protects your project outcomes and professional reputation.
Ready to discuss your heritage window project? Contact TRC Contracts today to arrange a technical consultation and discover how our specialist capabilities and industry-leading accreditations can support your specification requirements.
