architects FROM LONDON Fire Safety Design
Fire Safety Design for Residential Projects
↓
RIBA Chartered
Award winning
London · Vienna · Rome
Featured in The Times
Panel at Grand Designs Live
Fire safety design intro
Fire Safety Design for Residential Projects
Fire safety is a fundamental part of residential design and Building Regulations compliance.
Extensions, loft conversions, renovations and internal alterations can all affect how occupants escape, how fire and smoke move through a building and how structural elements perform in a fire.
Tholos can help coordinate fire safety requirements with the architectural design so that the layout, structure and technical details work together from an early stage.
Fire safety design explained
What Is Fire Safety Design?
Fire safety design considers how a building should perform if a fire occurs.
Depending on the project, this may include:
- escape routes
- protected stairways
- fire doors
- smoke detection
- fire-resistant construction
- compartmentation
- structural fire protection
- glazing
- ventilation
- separation between different areas
- access and safety considerations
The exact requirements depend on the building, the work being carried out and the applicable Building Regulations.
Fire safety design
Why Fire Safety Design Matters
Changes to a home can affect fire safety even when the work appears unrelated.
For example:
- creating an open-plan ground floor may affect the escape route
- converting a loft adds another storey
- removing walls may remove fire separation
- changing stairs can affect escape
- structural steelwork may need fire protection
- new internal layouts can alter circulation
Fire safety should therefore be considered as part of the design, not added at the end.
Fire Safety Design for Loft Conversions
Loft conversions are one of the most common projects where fire safety becomes particularly important.
Adding a new storey may affect:
- escape routes
- the staircase
- fire doors
- smoke detection
- ceilings
- structural protection
- separation between floors
The design may need to consider the route from the loft to the final exit at ground level.
Fire Safety Design for Extensions
Extensions can also affect fire safety, particularly where the internal layout is changed significantly.
This may include:
- opening up several rooms
- creating large kitchen-living spaces
- altering escape routes
- introducing new glazing
- changing the relationship between rooms and exits
A new extension should therefore be designed as part of the whole house rather than treated as an isolated addition.
Fire Safety Design for Renovations
Renovation projects can have major fire safety implications where internal layouts are changed.
This may involve:
- removing walls
- relocating stairs
- combining rooms
- creating open-plan layouts
- adding bedrooms
- altering doors
- changing circulation
Where substantial changes are proposed, the fire strategy should be considered alongside the architectural layout.
Fire safety design
Escape Routes
One of the key principles of fire safety design is ensuring that occupants have a safe route out of the building.
This can involve considering:
- distance to an exit
- stair location
- route through other rooms
- protected circulation
- door positions
- storey height
- alternative escape options
The layout should allow people to move away from a fire safely.
Protected Staircases
In some residential layouts, particularly multi-storey homes and loft conversions, the staircase may need to form part of a protected escape route.
This can influence:
- wall construction
- doors
- glazing
- openings
- room layouts
- circulation
The staircase therefore needs to be considered early in the design.
Fire Doors
Fire doors are designed to resist the spread of fire and smoke for a defined period.
Depending on the project, they may be required between:
- rooms and protected escape routes
- garages and houses
- different fire compartments
- certain higher-risk areas
Their location, rating and specification should match the wider fire safety strategy
Smoke Detection
Smoke and heat detection can form an important part of residential fire safety.
Depending on the project, alarms may be required in locations such as:
- circulation areas
- landings
- kitchens
- living areas
- bedrooms
- loft levels
The type and arrangement of detection should be coordinated with the building layout.
Open-Plan Layouts
Open-plan living spaces can create excellent interiors, but they can also complicate fire safety.
Removing walls may:
- reduce separation
- change the escape route
- expose stairs to open-plan rooms
- affect smoke spread
This does not mean open-plan design is impossible.
It means the fire safety implications need to be considered carefully.
Fire safety design
Fire Safety and Structural Design
Structural elements may need to retain their performance during a fire.
This can apply to:
- steel beams
- columns
- floors
- floors
- walls
- roof elements
Structural design and fire protection therefore need to be coordinated.
Fire Protection to Steelwork
Steelwork used in extensions, loft conversions and structural alterations may need fire-resistant protection.
Depending on the location and design, this may involve:
- fire-rated board
- encasement
- specialist coatings
- other approved protection systems
This can affect:
- ceiling depth
- wall build-ups
- room proportions
- finishing details
The structural and architectural design should allow for this from the outset.
Structural Calculations and Fire Safety
Structural calculations determine whether structural elements can safely carry their loads.
Fire safety design considers how those elements perform during a fire.
The two need to work together.
Compartmentation
Compartmentation is the use of fire-resistant construction to limit the spread of fire and smoke.
This can involve:
- walls
- floors
- ceilings
- doors
- service penetrations
The aim is to contain fire for long enough to support safe escape and reduce spread through the building.
Fire-Resistant Walls and Floors
Some walls and floors may need to provide a defined level of fire resistance.
This may depend on:
- building height
- storey arrangement
- room use
- relationship between spaces
- structural role
Technical drawings should show how these elements are intended to be constructed.
Fire Safety and Glazing
Glazing can also affect fire safety.
Depending on location, the design may need to consider:
- fire-resistant glazing
- escape windows
- safety glazing
- size and position
- proximity to boundaries
Window design should therefore be coordinated with both planning and technical requirements.
Fire Safety and Escape Windows
In some situations, windows may form part of the escape strategy.
Where this applies, their:
- size
- opening
- height
- position
may be important.
The requirement depends on the overall building design and escape strategy.
Fire safety design
Fire Safety and Building Regulations
Fire safety is a core part of Building Regulations.
The technical package may need to demonstrate compliance through:
- plans
- sections
- fire notes
- door specifications
- construction details
- smoke detection layouts
- structural protection
- escape arrangements
Fire Safety and Full Plans Applications
A Full Plans application allows fire safety information to be reviewed as part of the Building Regulations submission.
This can help identify issues before construction progresses.
The submitted information may include:
- escape layouts
- fire door positions
- protected routes
- structural fire protection
- smoke detection
- fire-resistant construction
Fire Safety and Building Notice
Where a Building Notice route is used, the work still needs to comply with the same Building Regulations requirements.
Fire safety information may be requested during the project.
For more complex layouts, resolving the fire strategy in advance can reduce uncertainty during construction.
Building Control and Fire Safety
Building Control may review fire safety during both design and construction.
They may check:
- escape routes
- fire doors
- smoke detection
- fire protection
- compartmentation
- structural protection
Any concerns raised should be addressed before the relevant work is completed or concealed.
Fire Safety and Technical Drawings
Technical drawings can help explain how fire safety measures are integrated into the construction.
They may show:
- fire-rated walls
- ceiling build-ups
- protected steelwork
- fire doors
- junctions
- penetrations
- smoke detection
Fire safety design
Fire Safety and Service Penetrations
Pipes, cables and ducts can pass through fire-resistant walls and floors.
These penetrations need to be treated carefully so they do not compromise the fire resistance of the construction.
Coordination may therefore be needed between:
- architectural design
- electrical services
- plumbing
- ventilation
- fire stopping
Fire Stopping
Fire stopping is used to seal gaps and penetrations in fire-resistant construction.
It may be required around:
- pipes
- cables
- ducts
- structural elements
- joints
- voids
Poor fire stopping can undermine otherwise compliant walls and floors.
Fire safety design
Fire Safety in Open-Plan Kitchens
Open-plan kitchens can create specific challenges because cooking areas are a common source of fire.
The design may need to consider:
- relationship to stairs
- escape routes
- smoke detection
- separation
- alternative escape strategies
The layout should be reviewed as a whole rather than assuming that an open-plan arrangement is automatically acceptable.
Fire Safety in Multi-Storey Homes
As homes become taller, fire safety requirements can become more demanding.
The design may need to pay greater attention to:
- protected stairs
- escape routes
- fire doors
- structural fire resistance
- alarm coverage
- compartmentation
Loft conversions are a common example because they increase the number of storeys in the property.
Fire Safety and Existing Buildings
Existing buildings can present challenges because their original construction may not match modern assumptions.
This can include:
- unknown wall build-ups
- concealed voids
- older timber structures
- historic alterations
- missing fire separation
Design decisions should therefore consider the actual existing building where relevant.
Fire Safety in Listed Buildings
Listed buildings can create an additional challenge because modern fire safety requirements may need to be balanced with historic fabric.
Interventions such as:
- replacing doors
- adding fire protection
- altering stairs
- introducing new partitions
may need careful design.
Fire safety design
Fire Safety and Principal Designer Duties
Fire safety is one of the technical areas that needs to be coordinated during design.
Where Building Regulations dutyholder requirements apply, the Principal Designer helps coordinate design work so that compliance is considered across the project.
Fire Safety and Builder Pricing
Fire safety measures can affect construction cost.
These may include:
- fire doors
- fire-rated partitions
- protected steelwork
- specialist glazing
- alarms
- fire stopping
If these requirements are not clearly shown before tendering, builders may price them differently or exclude them.
Fire Safety During Construction
Fire safety should also be considered while the building work is underway.
Temporary conditions can create new risks where:
- escape routes are blocked
- fire doors are removed
- walls are opened
- services are exposed
- structural protection is incomplete
The contractor is responsible for managing construction safety, but the design should avoid creating unnecessary ambiguity.
Fire Safety and Completion
Before Building Control can sign off a project, relevant fire safety measures may need to be completed and evidenced.
This can include:
- fire doors installed correctly
- smoke alarms fitted
- fire protection completed
- escape routes clear
- fire stopping finished
- required certificates provided
Fire safety design
Already Have a Fire Safety Issue?
If a project has already started and Building Control has raised concerns about fire safety, the drawings and existing layout may need to be reviewed.
Depending on the problem, the solution could involve:
- revised layouts
- additional fire doors
- improved separation
- altered escape arrangements
- additional protection
Need Fire Safety Design for Your Project?
Tell us what you are planning and what stage the project has reached.
Tholos can help coordinate fire safety requirements with the architectural, structural and Building Regulations design so the project is better prepared for approval and construction.
Client experience
"
Lorem ipsum dolor sit amet, consectetur adipiscing elit. We had a vision for our home but no idea how to realise it. Tholos Interiors took complete ownership of the project — every detail was considered, every decision explained. The result exceeded everything we had imagined.
– Lawrence Ipsum, Homeowner · London –
Frequently Asked Questions
Do loft conversions need additional fire safety measures?
Usually, yes. Adding another storey can affect escape routes, stairs, fire doors and smoke detection.
Are fire doors always required?
Not always. The requirement depends on the building layout, storeys and overall fire strategy.
Can I have an open-plan ground floor with a loft conversion?
Potentially, but the fire safety implications need to be assessed carefully because the staircase and escape route may be affected.
Is fire safety part of Building Regulations?
Yes. Fire safety is one of the main areas covered by Building Regulations.
Does structural steel need fire protection?
Often, depending on its location and role within the building.
Can Tholos coordinate fire safety with the architectural design?
Yes. We can integrate fire safety requirements into the architectural and technical drawing package and coordinate them with the wider Building Regulations design.
Disclaimer
This article is part of a series created by our dynamic marketing team for informational purposes only. While we strive to review all content thoroughly, occasional oversights may occur, even after publication. Therefore, we cannot accept liability for any interpretations or use of the information provided. For the most up-to-date information or to report any discrepancies, please contact us at hello@tholos-architects.com.
Start your project