Glass replacement
Broken glazing, failed sealed units and planned replacement, including complex access and high-level work.
Explore glass replacement →Commercial glazing & building envelope specialistsKeep your building
Keep your building
performing better.
Expert glazing, facade, window and door maintenance. From an urgent repair to a planned upgrade, we help you protect your building and the people who use it.
Supporting building owners, facilities managers and contractors across the UK.
One specialist teamSurvey, diagnose, repair and maintain
Commercial buildings, UK-wideOffices, education, healthcare, retail and more
Practical repair-first thinkingTargeted solutions for existing building systems
How we can helpThe right expertise.
The right expertise.
For the issue in front of you.
Find a route from the problem you can see to a clear, practical next step.
Leak investigations
Investigate water ingress in facades, roofs and glazing before committing to remedial work.
Find the cause of a leak →Repairs & maintenance
Restore the operation, security and weather-tightness of commercial aluminium windows and doors.
Explore window & door support →Curtain wall & facade repairs
Specialist investigation and repair of existing facade systems, defects and ageing components.
Explore facade repairs →Fire survey services
Explore Dortech’s fire survey support and discuss the assessment requirements for your building.
Explore fire survey services →Planned maintenance
Identify developing faults, prioritise repairs and plan the care of your glazing assets.
Plan your maintenance →Project spotlight / White Rose Park, LeedsA better facade.
A better facade.
Without starting again.
At the ABC Building, specialist reglazing retains the existing MAG Presslock curtain wall system while improving appearance, solar control and thermal performance.
748 m²Glazing replaced to date*
2.8 → 1.3Centre-pane U-value, W/m²K*
*As reported in the project case study. Glass performance is not a whole-building energy saving guarantee.
Read the project story →Explore the upgrade potential
What could better glazing change for your building?
Use our free glass energy-saving model to compare glazing scenarios and explore indicative heating and cooling savings before discussing a project.
Explore the energy-saving model →Estimates depend on your inputs and assumptions. Email verification is required to print or email your personalised report.
A useful starting point, not a promise
- Describe your current glazing.
- Compare a potential glass upgrade.
- Review the indicative results with our team.
Planning an investment? Explore project finance information.
A clear route forwardFrom first conversation
01 02 03 
From first conversation
to the right next step.
Tell us about your site
Share the building location, the issue, any urgency and photographs or drawings if available.
Understand the problem
Our team reviews the enquiry and advises whether further information or a site survey is needed.
Plan the right work
Discuss repair, replacement or maintenance options, including the access and operational needs of your building.
People behind the workTechnical expertise.
Technical expertise.
Practical people.
Our engineers support live commercial environments and demanding access projects, working with major aluminium and architectural glazing systems.
Get to know Dortech Maintenance →Before you get in touch
A few useful answers.
Do you work on occupied commercial buildings?
Yes. Dortech supports live commercial environments. Tell us about opening hours, public access and any operational constraints so they can be considered when planning the work.
Does damaged or ageing glazing always need replacing?
Not always. The appropriate route depends on the glass, components and existing system. An assessment helps establish whether targeted repair, component renewal or replacement is suitable.
What should I include in my enquiry?
Include the site address and postcode, your contact details, a description of the issue and any urgency. Photographs, drawings and information about access are useful where available.
Can you help with an urgent glazing issue?
Call 01484 451177 to discuss the issue and availability. The published office hours are Monday–Friday, 8.15am–5.00pm. Do not approach damaged or potentially unsafe glazing.
Let’s talk about your building
Make the next step a clear one.
Tell us what needs attention. We’ll help identify the right maintenance, survey or repair route.
Accreditations & Partners
Trusted standards, proven systems.
Dortech Maintenance works with recognised construction, safety, access and architectural glazing organisations across commercial building envelope projects.
