- A converted attic almost always creates a protected escape route on the stairs.
- Doors on the escape route may need to be upgraded to fire-rated doors.
- Mains-wired interlinked smoke alarms are typically required.
- Every project needs a fire-safety assessment for its specific layout.
Why fire safety changes when you convert an attic
A two-storey house has an escape route from every habitable room that is relatively short — bedrooms are one storey above ground and windows offer an assisted escape option. When you add a habitable attic storey, the top floor becomes further from safety and the stairs become the primary means of escape from the new rooms. The fire-safety strategy adapts to reflect that.
The protected escape route
In most converted homes the stairs and landings become a protected escape route. That means the walls, ceiling and doors enclosing the stair must resist fire for a specified period, so that occupants of the attic can reach the front door before the stair itself becomes untenable.
In practical terms, this usually involves:
- Upgrading walls and ceilings enclosing the stair, where required.
- Replacing doors that open onto the stair with fire-rated doors, typically 30-minute rated with intumescent seals.
- Ensuring the escape route leads to a final exit at ground level.
Alarms and detection
Mains-wired, interlinked smoke and heat detection is typically required throughout the house. Interlinked means that if one alarm activates, every alarm activates. This gives occupants early warning wherever they are in the home, not just where the fire started.
Doors, glazing and self-closers
Fire doors do their job only when they are closed. Depending on the layout, self-closers may be specified. Glazing in doors or adjacent panels on the escape route may need to be fire-rated glass — ordinary glazing is not equivalent.
Escape windows and roof egress
In some layouts an escape window in the attic is used as a secondary means of escape, subject to sill height, clear opening area and how the window opens. An escape window is a supplementary measure, not a replacement for a protected stair.
Open-plan ground floors
A common tension arises with modern open-plan ground floors — where a kitchen, dining and living area flow into the hallway and the stair. Because a fire in an open-plan area can quickly reach the escape route, additional measures such as domestic sprinklers or misting systems are considered. These allow the open-plan layout to be retained while satisfying the fire-safety strategy.
What this means for your project
Fire safety is not a set of universal answers. It is a strategy designed for your specific layout, taking into account how the stairs run, which doors sit on the escape route, whether the ground floor is open-plan and what the intended use of the attic will be. It is agreed at the design stage — not resolved on site — and the details are recorded in the compliance documentation on completion.
What this means for your project
Every home is different. Use this guidance to ask the right questions and to shape your brief — but confirm what applies to your specific property with a home survey and appropriate professional input.
Frequently asked questions
- Do all the doors in my house need to be replaced?
- Not necessarily. Fire-door requirements usually apply to doors that open onto the protected escape route — typically the stairs and landings. Doors within a room, or doors that do not open onto the escape route, are usually unaffected.
- Are smoke alarms enough on their own?
- Interlinked, mains-wired smoke and heat detection is one part of the fire-safety strategy but not the whole of it. Escape route protection, door specifications and, in some cases, sprinklers or misting systems are considered together.
- Can I still have an open-plan layout downstairs?
- Sometimes, with additional measures such as domestic sprinklers or misting systems. Open-plan layouts change the fire-safety strategy and are considered case by case with the design team.
- What about windows as an escape route?
- In some situations an escape window is used as part of the strategy. It must meet specific opening size and sill height requirements, and it does not replace a properly protected stair escape.
Start with a quick check of your attic.
Answer a few simple questions about your home and what you would like to create. We’ll give you an early indication of which conversion route may be worth exploring. A home survey is still required before suitability can be confirmed.
Or call +353 85 150 0853