NAS Certification for
Windows, Doors & Glazing Contractors.
Window, door, and glazing contractors working for housing associations, local authorities, house builders, and commercial clients need independently verified business compliance credentials. NAS provides evidence-based certification covering the health, safety, and operational compliance standards that procurement teams check before awarding fenestration and glazing contracts.
Why Windows, Doors & Glazing Contractors Need NAS Certification
FENSA and CERTASS registration covers building regulations compliance. NAS certifies business compliance. Housing associations, councils, and developers require both when assessing fenestration contractors for planned replacement and new-build programmes.
NAS Basic — £349/yr
Health and safety policy and arrangements, risk assessments and method statements, COSHH, CDM duties, training, insurance and subcontractor checks — the SSIP core criteria.
NAS Bronze — £749/yr
Everything in Basic plus legal identity and licences, employers’ liability insurance, data protection, equality, complaints handling, employment terms and right-to-work checks.
NAS Silver — £950/yr
Everything in Bronze plus environmental and waste management, quality and corrective action, governance and conflicts of interest, competition law, pensions, working time and subcontractor approval.
NAS Gold — £1,150/yr
Everything in Silver plus 13 procurement modules: financial standing, anti-bribery and integrity disclosures, tax status, cyber security, ethical supply chain, sustainability and Building Safety Act readiness.
What You Get With NAS Certification
Certification goes beyond a certificate — it opens doors and gives you tools to grow.
Public Register Listing
Housing and developer procurement teams verify your NAS status on the NAS register.
Fenestration Tenders
Access window, door, and glazing replacement programme opportunities across housing and commercial sectors.
Trade-Specific Questions
Your questionnaire includes questions for your trade, so the evidence you submit matches the work you actually do.
Assessor-Reviewed Evidence
An assessor checks your actual documents, so your certificate carries weight with buyers.
Expiry Reminders
Reminders before your NAS certificate, and dated documents you have submitted such as insurance, expire.
Annual Re-Assessment
Renewal includes a fresh evidence review, so buyers know your certificate reflects current documents.
Frequently Asked Questions
Other Sectors & Trades
Related Pages