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Letchworth · Hertfordshire

Fire Stopping in Letchworth

Professional fire stopping services in Letchworth, Hertfordshire. SSAIB-certified engineers covering SG6. Free site surveys and no-obligation quotes.

Postcodes covered: SG6

Request a Free Site Survey 01582 227 123

SSAIB Certified

Fast Response Times

15+ Years Experience

500+ Commercial Clients

Professional fire stopping across Letchworth

Letchworth Garden City is the world's first garden city, with a unique mix of heritage commercial buildings, modern business parks, and educational establishments. We regularly work across Letchworth and nearby Baldock, providing solutions suited to both modern and period buildings.

Letchworth's Heritage Foundation manages a stock of architecturally protected buildings — including the Spirella Building and Broadway Studios — alongside modern industrial units at Letchworth Gate. The split means we move between conservation-grade installations and standard commercial fit-outs depending on the address.

Whether you need a new fire stopping installation, a system upgrade, or ongoing servicing and maintenance, our SSAIB-certified engineers are ready to help across Letchworth and the wider Hertfordshire area.

Who this service is for

Heritage and listed buildings in Letchworth
Business parks in Letchworth
Schools and community centres in Letchworth
Retail premises in Letchworth
Residential blocks in Letchworth

Coverage area

We cover Letchworth and all surrounding areas in Hertfordshire.

Postcodes covered

SG6

Areas we regularly serve

Letchworth town centreLetchworth Gate Business ParkSpirella BuildingBaldock High Street

Sub-areas covered

BaldockWillianNortonWilburyJackmans EstateLordshipGrange

From Luton HQ14 mi · 30 min

Population33k

Call for availability in your area

Local context — fire stopping in Letchworth

Regulatory note

The Letchworth Garden City Heritage Foundation's design code restricts external alterations on protected buildings, so external CCTV and signage placement requires Foundation sign-off in addition to standard planning consent.

What's included in our fire stopping service

Third-Party Tested Systems

Every penetration sealed using systems tested to BS EN 1366-3 / BS EN 1366-4 for the specific substrate and service involved.

FIRAS / IFC Aligned Installation

Installers work to the manufacturer's tested detail and follow FIRAS, IFC Certification and ASFP principles.

Photographic Register

Every penetration photographed before, during and after installation, with unique reference numbers.

Asset Tagging

Each remediated penetration is labelled on site with a unique tag linked to the digital firestopping register.

Installer Certification

Certification listing every penetration treated, the system used and the manufacturer's tested detail referenced.

Reactive Reinstatement

Call-off service to attend after maintenance or fit-out works and reinstate compartmentation.

Need fire stopping in Letchworth? Speak to an engineer today.

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Why choose DC Fire & Security for fire stopping in Letchworth

Third-party tested and certified systems

Photographic evidence and unique IDs for every penetration

FIRAS / IFC / ASFP aligned installation practice

Digital firestopping register issued at handover

Installer certification covering every system

Aligned with the Building Safety Act 2022 golden thread

Single provider — survey, remedials and reinstatement

Reactive call-off service available for live sites

How it works

Scoping

We confirm the scope from a compartmentation survey, drawings or a site walk.

System Selection

We select the third-party tested system for each substrate / service / fire-rating combination.

Installation

Installers carry out the works to the tested detail, photographing each penetration.

Tagging & Register

Each penetration is asset-tagged on site and entered into the digital firestopping register.

Certification

Installer certification issued and the register handed over for the building safety case.

Fire Stopping projects in Letchworth

Fire protection and fire stopping at a school in Luton

Fire protection and compartmentation works at a Luton school

Fire compartmentation works at Queen Elizabeth School, Luton

Compartmentation and fire stopping verification, Queen Elizabeth School

Recent work in Letchworth

Residential Block Remedials

Remedial fire stopping across common areas and risers of a residential block in Letchworth using third-party tested systems with a digital firestopping register at handover.

134 penetrations

6 weeks

School Reinstatement Programme

Reinstatement of compartmentation following M&E works across a multi-academy trust school in Letchworth, with installer certification covering every penetration.

62 penetrations

2 weeks

Fire Stopping equipment we use in Letchworth

Industry-leading products from trusted manufacturers

Intumescent Sealants & Mastics

Third-party tested fire-rated sealants and mastics certified to BS EN 1366-3 and BS EN 1366-4

Fire-Rated Batts & Boards

Coated rock fibre batts and ablative boards for service penetrations through walls and floors

Intumescent Pipe Collars & Wraps

Tested collars and wraps for combustible pipe penetrations through fire-rated elements

Cavity Barriers

Tested cavity barrier systems for concealed roof voids, ceiling voids and external cavities

Fire-Rated Pillows & Bags

Reusable intumescent pillows for cable tray penetrations requiring future re-access

Digital Firestopping Register

Cloud-based register with unique IDs, photographs, system references and asset tagging

Frequently asked questions about fire stopping in Letchworth

What is fire stopping in Letchworth?

Fire stopping is the sealing of gaps and penetrations through fire-resisting walls and floors using systems tested to maintain the fire and smoke resistance of the original element. It is how the building's compartmentation strategy is held together over its life.

What standards does your fire stopping meet in Letchworth?

Our installations follow third-party tested details to BS EN 1366-3 (penetration seals) or BS EN 1366-4 (linear gap seals), with installation practice aligned to FIRAS, IFC Certification and ASFP guidance.

Why can't builders just use expanding foam in Letchworth?

Expanding foam has no fire test evidence for the substrates and services it is being applied to. Building control, insurers and the Building Safety Regulator require third-party tested systems for fire-rated penetrations.

Do you cover the whole of Letchworth?

Yes. Our engineers cover all of Letchworth and the surrounding Hertfordshire area. We provide free site surveys and can typically attend within 24–48 hours of your enquiry.

How quickly can you attend a site in Letchworth?

We aim to respond to all enquiries within 24 hours. For fire stopping projects in Letchworth, we can usually arrange a site survey within 2–3 working days.

Do you offer ongoing maintenance in Letchworth?

Yes. We offer scheduled servicing and maintenance contracts for all systems we install in Letchworth. This ensures your equipment stays compliant and fully operational year-round.