Northern Ireland · 7 postcode districts
Fire-Rated Windows for County Londonderry buildings
Our County Londonderry fire-rated windows service covers survey, supply and installation to the tested details, documented on handover.
E 30 – EI 60Northern IrelandBT
Quote for County Londonderry
Tell us what you need. We reply with next steps and a guide price.
Fire-Rated Windows: an overview for County Londonderry
Fire-rated windows are windows tested as complete units to resist fire, needed where an external wall must protect a neighbouring property, where a window looks onto a protected stair or escape route, or where two parts of a building face each other at close range.
- Boundary-wall and escape-route windows
- Matching sightlines to adjacent non-rated windows
- Tested opening fire-rated windows where available
Before you order in County Londonderry
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.
Boundary distance
The closer a wall is to a boundary, the less unprotected area it can have. Fixed windows that meet the wall's full fire-resistance requirement, including insulation where required, are not counted as unprotected area; integrity-only glazing generally still is.
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.
Which rules apply in Northern Ireland?
Northern Ireland Which rules apply?
In Northern Ireland, building work follows the Building Regulations (Northern Ireland) 2012, with fire safety guidance in Technical Booklet E, approved by the district council's building control.
Once in use, the Fire and Rescue Services (Northern Ireland) Order 2006 and the Fire Safety Regulations (Northern Ireland) 2010 require the appropriate person to maintain fire safety measures, including fire-resisting glazing.
Technical Booklet E sets its own provisions for glazing on escape routes, so designs are checked against the Northern Ireland guidance rather than English documents.
Fire-Rated Windows by town in County Londonderry
We cover fire-rated windows in Derry / Londonderry and across County Londonderry, including Coleraine. We also cover Limavady, Magherafelt.
Questions from County Londonderry clients
Do fire-rated windows look different?
Frames can be slightly heavier, but most can be finished to match surrounding windows.
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.
Do you cover all of County Londonderry?
Yes. We take enquiries from across County Londonderry, including Derry / Londonderry and Coleraine, and arrange surveys to suit your programme.
Related
Related services in County Londonderry
E · EW
Integrity Fire Glass (E & EW)
Covering Derry / Londonderry and County Londonderry
View details →
Process
What happens next
Share the details
Send the fire strategy extract, inspection report or a few photos of the openings.
Measure and check
We measure each opening in County Londonderry and check what the existing frames can accept.
Written quote
You receive a written quote naming the tested system and classification.
Install and hand over
Installation to the system details, then a handover pack with photographs and evidence.