Surveying, specification, supply, installation and certification—delivered by a reliable local glazing partner.
Your dedicated glazing partner
At Keystone Glazing, we work alongside builders, developers and renovation specialists, delivering a complete glazing service from initial survey through to installation and certification.
Whether you’re building an extension, renovating a property or managing a new-build project, we provide the expertise and support needed to ensure your glazing package is delivered accurately, professionally and on schedule.
Who We Work With
- General builders
- Extension specialists
- Renovation contractors
- Property developers
- Garden room companies
- Landscapers
- Architects
- Structural engineers
Our Services
Site Surveys
Accurate surveying is the foundation of every successful installation. We carry out detailed site surveys to ensure every product is manufactured correctly and integrates seamlessly with the building.
Product Specification
We’ll help specify the most appropriate products for your project, balancing aesthetics, performance, budget and Building Regulations requirements.
Supply & Installation
Our experienced installation team delivers high-quality workmanship across a wide range of residential glazing systems, ensuring a professional finish with minimal disruption to your build programme.
Building Regulations & Certification
All applicable installations are completed in accordance with current Building Regulations and are certified through CERTASS where required, or the Competent Persons Scheme.
Project Support
From reviewing drawings to coordinating installation dates, we work closely with your team to keep your project moving.
Looking for information on commercial scale projects?
Products We Install
Windows
- uPVC windows
- Aluminium windows
- Residence Collection
- Flush sash windows
- Vertical sliding sash windows
Doors
- Composite entrance doors
- Aluminium entrance doors
- Sliding patio doors
- Bifold doors
- French doors
Glazed Living Spaces
- Roof lanterns
- Conservatories
- Warm roof replacements
- Glazed extensions
Why Builders Choose Keystone
Reliable Communication
A dedicated point of contact throughout your project.
Accurate Surveys
Carefully measured installations that help minimise delays and costly mistakes.
Premium Products
Working with leading manufacturers to deliver products that meet the expectations of both builders and homeowners.
Flexible Service
Supply and installation tailored to suit your project requirements and programme.
Compliance Covered
Building Regulations compliance and certification managed as part of our service.
Local Expertise
Based in Chichester and working across Hampshire and West Sussex, we’re never far from site.
Frequently Asked Questions
Can you quote directly from drawings?
Do you offer supply only?
Can you work to our programme?
Absolutely. We coordinate installation dates to fit within your construction schedule wherever possible.
Do you survey before ordering?
Do you provide certification?
Which areas do you cover?
We primarily work throughout Hampshire and West Sussex, including Chichester, Portsmouth, Havant, Fareham, Bognor Regis, Midhurst and the surrounding areas.
Looking for Window Fitters in Chichester?
If you’re considering new windows or doors, we’re always happy to talk through your options — from product choice to installation approach.
No jargon, no pressure — just straightforward advice from experienced window fitters.
Call on 01243 302841 or email us at info@keystoneglazing.co.uk
