How to Choose Atrium Glazing Contractors: A Facilities Manager's Guide

Why Atrium Glazing Requires a Specialist Contractor

Commercial atrium glazing is a specialist discipline that sits at the intersection of overhead glazing technology, industrial rope access, and live building management. The combination of these three requirements means that the pool of contractors genuinely capable of delivering commercial atrium work to a professional standard is much smaller than the pool of contractors who will quote for it.

The consequences of appointing the wrong contractor are significant: repairs that fail within months, access arrangements that disrupt building operations, health and safety incidents, and the cost of bringing in a specialist to rectify the original contractor's work. Getting the contractor selection right is the most important decision in any atrium glazing project.

Essential Accreditations for Atrium Glazing Contractors

Constructionline Gold or Silver membership is the standard pre-qualification requirement for commercial building work in the UK. It demonstrates that the contractor's business management, financial standing and health and safety management systems have been independently assessed. Most commercial building owners and facilities managers require Constructionline as a minimum for any significant works.

CHAS (Contractors Health and Safety Assessment Scheme) or SafeContractor accreditation provides an independent assessment of the contractor's health and safety management systems. CHAS Elite is the highest level of assessment and is required by many large commercial building owners and public sector clients.

IRATA (Industrial Rope Access Trade Association) certification is essential for any contractor working on overhead glazing without scaffolding. IRATA operatives are trained and assessed to a rigorous standard by an independent body, and the certification requires annual renewal. Ask to see the IRATA certificates for the specific operatives who will be working on your project, not just a general statement that the company holds IRATA certification.

Public liability insurance of at least £5 million is a minimum requirement for commercial glazing work. For large commercial projects – major shopping centres, corporate headquarters, public buildings – £10 million is more appropriate. Ask for a current certificate of insurance, not just a statement of cover.

Questions to Ask Before Appointing a Contractor

How will you access the glazing? The answer should be rope access, MEWPs, or a combination of both – from above the glazing plane. A contractor who proposes to carry out overhead glazing repairs from below, or from a cherry picker positioned outside the building, cannot address the root cause of overhead glazing failures.

How will you manage the building during the works? The contractor should have a clear methodology for maintaining weathertight protection during repairs, managing access in a live building, and coordinating with building management and tenants. Ask for a method statement and programme before appointment.

What materials will you use? For sealant repairs, the answer should be high-performance structural silicone specified for overhead applications – not general-purpose construction sealant. For glass replacement, all overhead glass must be laminated to comply with Approved Document K.

Can you provide references from comparable projects? Ask specifically for references from overhead glazing projects in occupied commercial buildings – not just glazing projects in general. The challenges of working in a live shopping centre or corporate office are very different from a domestic or new-build project.

What guarantee do you provide? A workmanship guarantee is the minimum. For larger projects, ask about insurance-backed guarantees (IBGs), which remain valid even if the contractor ceases trading.