--- title: "Compartmentation — London, Kent, Sussex & Surrey | Flame Solutions Ltd" description: "Reinstate compartment walls, floors, ceilings and risers to certified detail — surveyed against the fire strategy and rebuilt by a BM TRADA third-party certif" lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://flamesolutions.co.uk/#organization", "name": "Flame Solutions Ltd", "url": "https://flamesolutions.co.uk", "logo": "https://flamesolutions.co.uk/favicon.png", "telephone": "+447400436839", "email": "flamesolutionsltd@gmail.com", "address": { "@type": "PostalAddress", "streetAddress": "6 Byron Avenue", "addressLocality": "Coulsdon", "postalCode": "CR5 2JR", "addressRegion": "Surrey", "addressCountry": "GB" }, "founder": { "@type": "Person", "name": "Michael Sully" } }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://flamesolutions.co.uk/#website", "url": "https://flamesolutions.co.uk", "name": "Flame Solutions Ltd", "inLanguage": "en-GB", "publisher": { "@id": "https://flamesolutions.co.uk/#organization" } }, { "@context": "https://schema.org", "@type": "Service", "@id": "https://flamesolutions.co.uk/services/compartmentation#service", "serviceType": "Compartmentation", "name": "Compartmentation", "url": "https://flamesolutions.co.uk/services/compartmentation", "provider": { "@type": "LocalBusiness", "@id": "https://flamesolutions.co.uk/#localbusiness", "name": "Flame Solutions Ltd", "telephone": "+447400436839", "email": "flamesolutionsltd@gmail.com", "address": { "@type": "PostalAddress", "streetAddress": "6 Byron Avenue", "addressLocality": "Coulsdon", "postalCode": "CR5 2JR", "addressRegion": "Surrey", "addressCountry": "GB" } }, "areaServed": [ { "@type": "Place", "name": "London" }, { "@type": "Place", "name": "Kent" }, { "@type": "Place", "name": "Sussex" }, { "@type": "Place", "name": "Surrey" }, { "@type": "Place", "name": "Croydon" }, { "@type": "Place", "name": "Sutton" }, { "@type": "Place", "name": "Bromley" }, { "@type": "Place", "name": "Sevenoaks" }, { "@type": "Place", "name": "Crawley" } ], "description": "Reinstate compartment walls, floors, ceilings and risers to certified detail — surveyed against the fire strategy and rebuilt by a BM TRADA third-party certified specialist — so the building performs the way the fire engineer assumed it would." }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does compartmentation remediation cost?", "acceptedAnswer": { "@type": "Answer", "text": "Priced by programme, not day rate. Send the FRA or Type 4 survey and drawings — you'll get a scoped programme with evidence deliverables built in." } }, { "@type": "Question", "name": "How long does compartmentation work take?", "acceptedAnswer": { "@type": "Answer", "text": "Depends on floor count, access and how much void needs opening. Multi-floor HRB programmes are phased by floor over weeks to months; smaller works complete in days." } }, { "@type": "Question", "name": "Do you guarantee the compartmentation works?", "acceptedAnswer": { "@type": "Answer", "text": "No additional product warranty. The certified systems used carry their own test evidence; our deliverable is evidenced installation to those tested details." } }, { "@type": "Question", "name": "How long should reinstated compartmentation last?", "acceptedAnswer": { "@type": "Answer", "text": "Correctly reinstated and undisturbed, the compartment line performs for the life of the construction. The risk is later trades penetrating the line without sealing it — every future intervention needs the seal reinstated." } }, { "@type": "Question", "name": "Do you carry out the survey as well as the works?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Survey, remediation strategy and delivery come from one team, priced together, so nothing falls between roles." } }, { "@type": "Question", "name": "Can you work in occupied residential blocks?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — most of the compartmentation work is in occupied HRBs, housing association stock and NHS estates. Access is phased and communicated to residents." } }, { "@type": "Question", "name": "Do you deliver alongside our principal contractor?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, both direct to duty holders and as a subcontract specialist to principal contractors on major refurbishments." } }, { "@type": "Question", "name": "Which areas do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "London, Kent, Sussex, Surrey and surrounding boroughs including Croydon, Sutton, Bromley, Sevenoaks and Crawley." } }, { "@type": "Question", "name": "Can you close out an FRA on our behalf?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — the standard deliverable is a priced programme against each FRA action, closed out with evidence referenced to the action number." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://flamesolutions.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://flamesolutions.co.uk/services" }, { "@type": "ListItem", "position": 3, "name": "Compartmentation", "item": "https://flamesolutions.co.uk/services/compartmentation" } ] } ] --- [flamesolutionsltd@gmail.com](mailto:flamesolutionsltd@gmail.com)Serving London · Kent · Sussex · Surrey [](https://www.instagram.com/flamesolutionsltd/)[07400 436839](tel:+447400436839) [![Flame Solutions Ltd](/__l5e/assets-v1/8937fb61-d54f-4b77-aea7-a3f11a843ae3/flame-solutions-logo.png)](/) [Home](/)[About](/about) [Services](/services) [Areas](/areas) [Our Work](/our-work)[Reviews](/reviews)[Contact](/contact) [](https://www.instagram.com/flamesolutionsltd/)[Request Estimate →](/contact) We use essential cookies only, to make this site work. [Cookie policy](/cookie-policy) OK 1. [Home](/) 2. [Services](/services) 3. Compartmentation ![Completed compartmentation boxing to a service riser — sealed, painted and handed over](/__l5e/assets-v1/178947f0-5828-4289-966f-74e7abbcf61a/compartmentation-3-after.jpeg) [← All services](/services) # Compartmentation Rebuilding the Fire Compartment Lines That Protect Escape Routes Reinstate compartment walls, floors, ceilings and risers to certified detail — surveyed against the fire strategy and rebuilt by a BM TRADA third-party certified specialist — so the building performs the way the fire engineer assumed it would. [Request Estimate](/contact) [07400 436839](tel:+447400436839) 5 years' passive fire experience. One accountable specialist for the whole compartment line. Passive fire experience 5 years Third-party certification BM TRADA (via Sully Form Ltd) Employers' liability £10M Public liability £5M Accreditations Constructionline Silver · SafeContractor · SIPS Service overview ## What this service is — and when you need it. What it is Survey, repair and reinstatement of compartment walls, floors, ceilings, risers and service cupboards — sealing legacy breaches, unrecorded M&E routes and degraded construction back to certified detail. Who it's for HRB duty holders, housing associations, healthcare estates, managing agents and principal contractors delivering fire strategy remediation programmes. When it's needed Following an FRA compartmentation survey, during major refurbishment, after M&E works have breached the compartment line, or when a Type 4 fire risk assessment has opened up voids and exposed defects. Why a specialist matters The fire strategy assumes the compartment line is continuous. In most existing buildings it isn't — legacy works, unrecorded penetrations and degraded blockwork mean fire and smoke bypass the escape route. Restoring the line is what makes the strategy real. What happens if this is ignored ## The consequence of leaving it. - A broken compartment line means fire, smoke and hot gases move freely between flats, floors and escape routes. - Stay-put strategies depend on compartmentation. A compromised line changes the evacuation strategy and the risk profile overnight. - Duty-holder exposure under the Building Safety Act increases materially where the compartment line cannot be evidenced. Common mistakes ## What we see go wrong. - Treating fire stopping and compartmentation as the same trade — the sealant work is only one component of the compartment line. - Not opening up ceiling voids and risers during survey — the worst defects are almost always out of sight. - Rebuilding compartment walls in the wrong system for the required rating. - Handing over without a drawing marked up showing which compartment lines have been reinstated. Our process ## A step-by-step system, from survey to handover. 1. Step 1 Compartmentation survey Walk the compartment lines against the fire strategy drawings — walls, floors, ceilings, risers, cupboards and communal voids. 2. Step 2 Defect log and remediation strategy Every breach classified by location, cause and required system. Priorities set against the FRA actions and the fire strategy. 3. Step 3 Reinstatement to certified detail Walls repaired or extended in the correct system, penetrations sealed with tested detail, riser and cupboard integrity restored. 4. Step 4 M&E coordination Coordinated with M&E first- and second-fix so new services don't re-breach the line the moment we leave site. 5. Step 5 Close-out pack per compartment line Drawings marked up, photo evidence per line, systems and datasheets recorded for the building safety file. Why clients choose Flame Solutions ## Specific outcomes, not vague promises. Fire strategy performs as designed Compartment lines restored to the drawings the strategy is based on. Reduced enforcement exposure Evidenced compartmentation directly addresses the duty-holder's obligations. One accountable specialist Doors, stopping and compartmentation delivered by one team, not stitched together across three. Coordinated with M&E New services routed and sealed to keep the line continuous through and after installation. Line-by-line evidence Marked-up drawings and photo packs referenced to each compartment line. Fewer surprises at re-inspection Because the survey opens the voids — nothing significant is left to find later. In detail ## Materials, methods and where each applies. The technical detail behind how compartmentation is scoped, specified and installed to certified detail. Repair of compartment walls Riser and cupboard integrity works Coordination with M&E contractors during first- and second-fix ### Compartment walls, floors and ceilings Reinstatement varies by system — blockwork, drylining on studwork, concrete slab, timber floor build-ups. Each has a tested detail for how the wall meets the slab, how a penetration is sealed, and how service voids are protected. Repair without matching the tested detail introduces failure at exactly the point the assessor looks first. ### Riser and cupboard integrity Risers are one of the most common compartmentation failure zones — service holes drilled at every floor, cable trays run without sealing, historic access hatches left uncertified. Restoring riser integrity means sealing every penetration and, where required, upgrading the enclosure itself. ### Head-of-wall and construction joints The point where a compartment wall meets the slab above is often incomplete — a strip of daylight above the blockwork, or a deflection head detail installed for structure but never sealed for fire. These are treated as linear gap work within the compartmentation package. ### Coordination with M&E first- and second-fix New services routed after our works are the fastest way to re-break the compartment line. We coordinate with M&E to plan penetration locations, back-boxing and sealing sequence, and to re-seal wherever second-fix has cut through. ### What we do not offer We do not offer a warranty on compartmentation works. The certified systems used carry their own third-party test evidence; our commitment is to reinstate strictly to those tested details and hand over a defensible evidence pack. Related services [Certified Fire Door Installation](/services/fire-door-installation)[Fire Door Maintenance & Repairs](/services/fire-door-maintenance-repairs)[Fire Stopping Services](/services/fire-stopping)[Fire Door Surveys](/services/fire-door-surveys) Serving [London](/areas/london), [Kent](/areas/kent), [Surrey](/areas/surrey), [Croydon](/areas/croydon) . See [all services](/) or [get in touch](/contact). Frequently asked ## Straight answers on cost, timing and process. How much does compartmentation remediation cost? + Priced by programme, not day rate. Send the FRA or Type 4 survey and drawings — you'll get a scoped programme with evidence deliverables built in. How long does compartmentation work take? + Depends on floor count, access and how much void needs opening. Multi-floor HRB programmes are phased by floor over weeks to months; smaller works complete in days. Do you guarantee the compartmentation works? + No additional product warranty. The certified systems used carry their own test evidence; our deliverable is evidenced installation to those tested details. How long should reinstated compartmentation last? + Correctly reinstated and undisturbed, the compartment line performs for the life of the construction. The risk is later trades penetrating the line without sealing it — every future intervention needs the seal reinstated. Do you carry out the survey as well as the works? + Yes. Survey, remediation strategy and delivery come from one team, priced together, so nothing falls between roles. Can you work in occupied residential blocks? + Yes — most of the compartmentation work is in occupied HRBs, housing association stock and NHS estates. Access is phased and communicated to residents. Do you deliver alongside our principal contractor? + Yes, both direct to duty holders and as a subcontract specialist to principal contractors on major refurbishments. Which areas do you cover? + London, Kent, Sussex, Surrey and surrounding boroughs including Croydon, Sutton, Bromley, Sevenoaks and Crawley. Can you close out an FRA on our behalf? + Yes — the standard deliverable is a priced programme against each FRA action, closed out with evidence referenced to the action number. ## Get a fixed quotation for compartmentation. Send the FRA action list, drawings or a short scope description. You'll speak to Michael directly — not a call centre — and get a scoped, priced programme back. [07400 436839](tel:+447400436839)[Contact page](/contact) Delivered by Michael Sully — 5 years' passive fire experience. BM TRADA third-party certification held via Sully Form Ltd. Insured to £10M employers' / £5M public liability. ## Ready to scope your compartmentation works? Send the FRA or a short brief. You'll get a priced, evidenced programme back — not a template quotation. [Request Estimate](/contact) [07400 436839](tel:+447400436839) ![Flame Solutions Ltd](/__l5e/assets-v1/8937fb61-d54f-4b77-aea7-a3f11a843ae3/flame-solutions-logo.png) Certified passive fire protection — fire doors, fire stopping and compartmentation — led by BM TRADA third-party certified specialist Michael Sully. [07400 436839](tel:+447400436839) [flamesolutionsltd@gmail.com](mailto:flamesolutionsltd@gmail.com) 6 Byron Avenue, Coulsdon, CR5 2JR Monday – Saturday: 7:00am – 7:00pm [](https://www.instagram.com/flamesolutionsltd/) Services - [Certified Fire Door Installation](/services/fire-door-installation) - [Fire Door Maintenance & Repairs](/services/fire-door-maintenance-repairs) - [Fire Stopping Services](/services/fire-stopping) - [Compartmentation](/services/compartmentation) - [Fire Door Surveys](/services/fire-door-surveys) - [FRA Passive Fire Repairs](/services/fra-passive-fire-repairs) - [Service Penetration Fire Sealing](/services/service-penetration-fire-sealing) - [Linear Gap & Joint Fire Sealing](/services/linear-gap-joint-fire-sealing) - [Fire-Rated Air Transfer Grille Installation](/services/fire-rated-air-transfer-grille-installation) Service Areas - [London](/areas/london) - [Kent](/areas/kent) - [Sussex](/areas/sussex) - [Croydon](/areas/croydon) - [Surrey](/areas/surrey) - [Sutton](/areas/sutton) - [Bromley](/areas/bromley) - [Sevenoaks](/areas/sevenoaks) - [Crawley](/areas/crawley) Company - [About](/about) - [Our Work](/our-work) - [Reviews](/reviews) - [Contact](/contact) - [Privacy Policy](/privacy-policy) - [Terms & Conditions](/terms-conditions) - [Cookie Policy](/cookie-policy) © 2026 Flame Solutions Ltd. Company registered in England & Wales. BM TRADA, Constructionline Silver, SafeContractor and SIPS credentials are held by Michael Sully, registered under our associated company Sully Form Ltd. No warranty is offered. [Call](tel:+447400436839)[Request Estimate](/contact)