Fire-Rated Windows for Hertfordshire buildings
We survey, supply and install fire-rated windows across Hertfordshire, from Watford to Hemel Hempstead, Stevenage, St Albans, Welwyn Garden City, working to the classification your fire strategy sets.
Quote for Hertfordshire
Tell us what you need. We reply with next steps and a guide price.

What our fire-rated windows service includes in Hertfordshire
Most fire-rated windows are fixed lights, because opening windows need the opening sash, hinges and locks to be tested too. We supply and install fixed and, where tested, opening fire-rated windows in steel, aluminium and timber, matched to the surrounding windows where possible.
- Tested opening fire-rated windows where available
- Boundary-wall and escape-route windows
- Fire-stopping to the wall opening
Choose a town in Hertfordshire
We cover fire-rated windows in Watford and across Hertfordshire, including Hemel Hempstead, Stevenage, St Albans, Welwyn Garden City.
What to check before ordering in Hertfordshire
Why fixed lights are common
An opening sash introduces gaps and hardware that all need testing. Fixed fire-rated windows are simpler and more widely available.
Escape windows are different
Windows used for escape from rooms have their own size and opening rules, and should not be confused with fire-resisting windows.
Retrofits
Replacing a non-rated window near a boundary is often triggered by an extension or change of use. We survey the opening before quoting.
Regulations for Hertfordshire projects
England Which rules apply?
Building work in England is covered by the Building Regulations 2010, with fire safety guidance in Approved Document B and impact safety guidance for glazing in Approved Document K.
Once a building is in use, the Regulatory Reform (Fire Safety) Order 2005 requires the responsible person to maintain fire safety measures, including fire-resisting glazing. The Fire Safety (England) Regulations 2022 add duties for multi-occupied residential buildings, including fire door checks in buildings over 11 metres.
Fire-Rated Windows in Hertfordshire: questions
When do I need a fire-rated window?
Usually when a wall is close to a boundary, when a window overlooks a protected escape route, or when part of a building faces another part at close range. Your designer or building control will confirm.
Is fire-rated glass in a standard window enough?
No. The frame, glazing system and fixings also need to be part of a tested window.
Can fire-rated windows open?
Some can, if the opening version has been tested. Fixed fire-rated windows are more common.
Which parts of Hertfordshire do you cover?
All of it: Watford, Hemel Hempstead, Stevenage, St Albans, Welwyn Garden City and every district in the SG, WD, AL, HP postcode areas.
Related services in Hertfordshire
What happens next
Tell us what you have
Send drawings, a fire risk assessment action or photos of the glass marks.
Survey
We visit Hertfordshire to measure, record existing marks and check the frames and substrate.
Written proposal
We set out the system, glass, evidence and programme, with a fixed price.
Fit and record
We install, photograph seals and fixings before closing up, and hand over the schedule.