Fire Stopping in Aldgate
Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Aldgate and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Old intumescent sealant that has split away
- Seals that don’t match their tested detail
- Unsealed openings around new pipes and cables
Need fire stopping in Aldgate?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Fire stopping in Aldgate, done properly
Most of our fire stopping work happens after the building is up. New cable runs, replaced pipework and extra data routes all punch holes in compartment walls, and they are easy to forget. Those on your schedule are closed with the specified product. We work on small duct penetrations where the tested detail allows, cable penetrations and service gaps in risers, and what we’re called in for most is seals disturbed by maintenance and left open and non-fire-rated filler around services. Looking for mastic applicators who cover Aldgate? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
In London, higher-risk residential buildings under the Building Safety Act bring extra scrutiny of fire-stopping records. 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.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Place
- Aldgate (E1, EC2A, SE1)
- Region
- City of London
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Keeping the joints sound
A few simple habits keep the new joints working:
- Have penetrations checked while they can still be seen
- Leave fire sealant to cure fully before covering it
- Foam or ordinary sealant is never a fire-seal repair
- Report damaged or disturbed seals as soon as they’re spotted
After the work, brief anyone else working in the area that the openings are now sealed. If a seal has to be opened for a new service, it should be reinstated to the same detail using the same product.
Make reporting new openings part of every permit to work in service areas. Small habits like this stop openings building up.
How a job runs
Inspect, seal, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Most London premises stay occupied while we’re on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- First we go through the drawings, schedule or specification for the seals 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.
- We fit the backing the detail asks for, to the stated depth.
- 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.
Getting the site ready
- Warn occupants and staff about the work
- Send asbestos survey details if the building is pre-2000
- Send any specification or drawings in advance
Getting a fixed quote
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. To get it moving, call the office on 01277 525 020 or email drawings and photos.
Advice
When to call us in Aldgate
Openings in fire-resisting walls normally appear when services are added or changed. New cabling, rerouted pipework or a data route drilled through a riser leaves an opening that nobody returns to. Over a few years of fit-outs, a wall can collect a lot of these.
Typical triggers for a call:
- Head-of-wall gaps with no fire seal
- Damaged fire seals in risers and voids
- Hidden openings found during inspections
- Expanding foam used as fire stopping
Wherever services are added at a hospital such as London Bridge Hospital (to the south-west of Aldgate) the compartment line has to be made good with the specified product.
What to look for in a quote
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Their public liability cover
- Who will actually carry out the work
- The named product and why it was chosen
Nearby places to Aldgate
Other services in Aldgate
Questions about Aldgate
Could you schedule work at a campus like London Metroplitan University: Aldgate Campus for the vacation?
Yes, holiday working periods are the norm on campus jobs. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Aldgate?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Do you guarantee your work?
Yes, for 12 months. If our installation fails in that time, we return and fix it.
What happens if old sealant might contain asbestos?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.
Do you seal on top of existing sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Can you fit around our working hours?
The office is staffed Monday to Friday, from 8am until 5pm. Tell us your site hours and access windows and the work will be fitted around them.
Do you work in Aldgate?
Yes. Aldgate is in our area and the rest of City of London. For a quote, ring 01277 525 020 or email drawings and photos.
Work for main contractors and building owners
Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, so there’s one set of paperwork to deal with.
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.
Compartment walls and floors in Aldgate
Nine care or nursing homes sit less than 2 miles from Aldgate. Where new services have gone through compartment walls in a care setting, the gaps need the specified product. We install fire-rated sealant to the tested detail where it is specified. There are plenty of hotels within about 2 miles of Aldgate. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal.
Office fit-outs on sites such as Princes Court Business Centre (0.9 miles east of Aldgate) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it. For a site team at a college like London College of Marketing and Technology (under half a mile north-east of Aldgate), fire-rated sealing is best scheduled after the summer works.
Aldgate is about 1 mile north-east of London, in City of London. We cover Aldgate, with the same fixed quotes and 12-month guarantee as everywhere else. Aldgate is one of 7 places we cover in City of London.
Work on service penetrations is covered throughout E1, EC2A and SE1, for business premises of every kind. For a building on Bush Lane, Swan Lane and Mark Lane or nearby, we can quote for service penetrations. Main routes into Aldgate include the A3 and A10, useful when we plan access and materials. Just outside Aldgate, we also work in Spitalfields (1 mile north-east), Bishopsgate (1 mile north-west), Tower Hill (1 mile south), Whitechapel (1 mile north-east) and City of London (1 mile west).
Around Aldgate
Around Aldgate, our work takes us to commercial buildings near Bishopsgate Institute Special Collections and Archives, Fund Academy and Finsbury Circus and the streets around them. Also close by are London Enterprise Academy (0.6 miles east), East India Arms (under half a mile south-west) and St Mary-at-Hill (under half a mile south-west). There’s a railway station in Aldgate itself: London Fenchurch Street station. Nearby you’ll also find The City Wall at Vine Street (less than half a mile south-east) and Gabriel's Wharf (1.4 miles west). Open spaces near Aldgate include Tower Hill and St. James's Park Lake.
Surface by surface
Plastic pipes
Waste and drainage pipes through floors are a frequent case. The detail decides whether sealant alone is enough, and we won’t substitute it for a specified collar.
Linear joints
Joints at the top of partitions may need to move as the slab above deflects. We use the product and backing the detail names for that movement, with no gaps along the run.
What happens if it’s left?
An improvised seal can look finished while offering no tested performance. Correcting it means cutting it out and starting again with the specified product, and doing it once, properly, is cheaper. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.
Pricing service penetrations depends on quantities, condition and access, plus any specification you are working to. Call for a quote.
What you get with us
- CHAS accredited
- Constructionline member
- 12-month guarantee on workmanship
- One contact handling all your sites
See our cost guide and how we’re accredited.