Commercial
Commercial windows, doors and shopfronts.
26 years of installations across Essex, Kent and London — for landlords, property managers, retailers, schools and light industrial sites. Single contact. Scheduled to minimise disruption. Properly accredited.
TrustMark · NAPIT · Rehau Authorised · Public liability cover
What we install commercially
Full commercial glazing capability — from a single shopfront to a multi-site portfolio rollout.
Windows & Curtain Walling
Glazing
Commercial-grade window systems, curtain walling and structural glazing. uPVC, aluminium and steel-look frame systems to current Part L thermal standards.
Entrance Doors & Shopfronts
Entrances
Aluminium shopfronts, automatic doors, manifold-glazed entrances and high-security commercial doors. Compliant with DDA / Equality Act access standards.
Roofline, Cladding & Glazed Roofs
Envelope
Commercial roofline, cladding, rooflights and structural glazing for offices, warehouses, schools and retail.
Working with us
How we work with commercial clients
Process
From survey to handover.
- Site survey by a senior Clarendon team member
- Detailed quotation with itemised costings and programme
- Materials specification document for sign-off
- Risk assessment and method statement (RAMS) issued before any work begins
- Single point of contact throughout — direct line, not a call centre
One contact, start to finish.
Commercial Terms
Set up as a supplier in one conversation.
- Public liability cover £5m
- Stage-payment terms available for larger projects
- Standard 30-day invoicing for contracted clients
- All accreditations available on request (TrustMark, NAPIT, Rehau)
- VAT-registered and Construction Industry Scheme (CIS) compliant
Set up as a supplier in one conversation.
Request a Proposal
Tell us about the project.
Brief outline below. We'll come back within one working day with next steps.
Public liability £5m · TrustMark · NAPIT · Rehau Authorised · 26 years trading
Recent commercial projects.
Shopfronts & entrances
Commercial buildings & glazing
Education
Why Clarendon
A quarter-century of doing it the right way.
Family-run since 1999
Three generations of craftsmen. The same name on the van as on the paperwork.
TrustMark & NAPIT registered
Independently vetted. Government-endorsed. Your deposit and workmanship are protected.
10-year guarantee
On every installation. Backed by insurance — not just a promise.
Essex, Kent & London
Local installers, local knowledge. We've been working these streets for 26 years.
Frequently asked.
Working on a commercial project?
Fill in the form above, call us on 01375 371007, or email mica@clarendon.me.uk with a brief — we'll come back within one working day.
Thinking about your next commercial project?
No hard sell. No pressure. Just an honest conversation about what you'd like to do — and what it would take to do it properly.