Fire-rated sealing and fire stopping in Mortlake, Greater London
Sealant work in Mortlake for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.
- Fire sealant pulled out of the opening
- Snag lists that include open service penetrations
- Open linear gaps along the top of fire-resisting walls
Need fire stopping in Mortlake?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
About our fire stopping in Mortlake
Facilities managers in Mortlake often find open service penetrations when ceilings come down for other work. Where the walls and floors already have a fire-stopping specification, we can work to it using the product and detail it sets out. Where there isn’t one, the designer or fire engineer needs to set one first. Most enquiries involve unsealed joints where partitions meet the slab and service penetrations left open after M&E works, on pipe penetrations, small duct penetrations where the tested detail allows and service gaps in risers. Looking for mastic applicators who cover Mortlake? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.
Taller residential buildings in London may fall under the Building Safety Act’s higher-risk regime, where fire-stopping records get close attention. We install what the designer or fire engineer has specified, and if you need records of the work, tell us and we will confirm with the quote.
Whoever the client is, the cover is the same: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Mortlake (SW14, SW13, SW15)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
How the job changes by surface
Drylining partitions
Plasterboard partitions are tested as a specific construction. The sealant detail has to be tested in that wall type, with the stated board layers first.
Plastic pipes
Plastic pipes soften and collapse in a fire. Small sizes are sometimes covered by an intumescent sealant detail, though larger ones typically call for a collar or wrap. We confirm material and size first and tell you if sealant isn’t the right product.
Common questions from Mortlake clients
Do you take on jobs in Mortlake where loading and access are tightly controlled?
Yes, most London buildings have access rules of some kind, and we plan around them. The building manager’s rules go straight into our method.
Do you work on fire-rated sealing in hotels in Mortlake?
Yes, where fire-rated sealant is the specified product. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we will tell you if the detail calls for a collar, wrap or batt instead.
What about RAMS and site documents?
Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm them with the quote.
Does the weather affect the work?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.
Are your applicators CSCS-carded?
Yes. We use CSCS-carded applicators, as many construction sites ask for.
Is colour matching possible?
It depends on the product specified. Some ranges offer many colours, others very few, so we will confirm the colours available for the specified product with the quote.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Why act early in Mortlake
Open service penetrations matter on ordinary days, not just in a fire: they also carry noise, draughts and smells between rooms. Sealing them to the specified detail deals with the fire risk first. Getting scaffold, permits or access booked in Mortlake takes effort, so it makes sense to deal with every failing joint while access is in place.
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.
Why appoint us
- Clear, fixed quotes
- One contact handling all your sites
- Health and safety: CHAS accredited
- Work carried out by CSCS-carded applicators
Read our cost guide and our accreditations.
Places near Mortlake
What else we do in Mortlake
Service penetrations in Mortlake buildings
Fire stopping of openings and penetrations in England falls under Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. Every new tenant in a London building tends to bring new cabling, and with it new holes through compartment walls. We install fire-rated sealant where it is specified and work within the building manager’s permit system.
At a retail site such as Kew Retail Park, 1 mile north-west of Mortlake, walls between units may be fire-resisting, so services added in a refit need the specified seal. Campus buildings at universities such as University of Roehampton (to the south-east of Mortlake) see constant changes to data and services, and fire-rated sealant goes in around new penetrations where it is specified. At a healthcare site like Barnes Hospital, under half a mile east of Mortlake, new services through compartment walls are a constant, and each needs the specified seal.
Mortlake is about 3 miles west of Fulham, in Greater London. Mortlake sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places. Sites around London have their own page, roughly 8 miles from Mortlake.
Postcode districts covered here: SW14, SW13 and SW15. If your site is on Elm Road, Well Lane and Coval Road or close by, we can quote for service penetrations. Access to Mortlake is via the A3003, so getting applicators and materials to site is simple. If your building is just outside Mortlake, we cover East Sheen (1 mile south-west), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Roehampton (1 mile south-east). Further afield, our area takes in London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
What’s near Mortlake
Around Mortlake, our work takes us to commercial buildings near Richmond Park Academy, Hare and Hounds pub and Palewell Park and the streets around them. Mortlake has its own railway station: Mortlake station. Nearby you will also find Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (less than half a mile east). Not far away are Richmond Hill and Kew Gardens Lake.
What affects the price in Mortlake
To price the job, we consider:
- How accessible the joints are
- Whether the work must be split into stages
- How much there is to seal
- Joint width, depth and condition
A quote for service penetrations depends on how many there are, their condition and the access, plus any specification you are working to. Call for a quote.
What we need to price the job
It doesn’t need to be a full survey. A few details are enough to get going:
- The type of building and who uses it
- Approximate linear metres or a joint schedule
- The site address and postcode
- Specification clauses that apply
A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or ring 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.
Looking after the joints
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:
- Ask the designer to confirm details early on refits
- Foam or ordinary sealant is never a fire-seal repair
- Flag new cables with no seal around them
- Check risers and ceiling voids after each round of works
New services after handover are a common way fire stopping gets breached. A short check at the end of each job saves a long hunt later.
Keep a register of where seals are and what they are made of. When a new service goes through, everyone knows which product and detail to match, which saves guesswork.
Our process
Occupied buildings need a little choreography. We sign and contain the area we are in, keep walkways clear and work section by section so the rest of the building stays in use. In Mortlake, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- We read the specification, drawings or penetration schedule you send and raise any questions before we price.
- On site, each opening is checked against the tested detail it is meant to follow.
- Unsuitable fillers and loose debris are taken out of each opening.
- Mineral wool or other backing goes in wherever the detail asks.
- Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
- If an opening needs something other than sealant, we tell you instead of improvising.
What we need from you
- Make sure the joints can be reached
- Explain the parking and delivery arrangements
- Share the asbestos register for older buildings
Request a quote
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, ring 01277 525 020 or use the quote form.
Advice
Work for main contractors and building owners
When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.