The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Fire-rated sealing and fire stopping in Bow Common, Greater London

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Bow Common. Send details for a fixed quote.

  • Head-of-wall gaps with no fire seal
  • Unsealed penetrations discovered above suspended ceilings
  • Openings left by services added after handover
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Fire stopping for businesses in Bow Common

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

From enquiry to sign-off

Occupied buildings need a little choreography. We sign and contain the area we’re in, with routes through the building left open and move on in phases so staff and visitors can carry on around us. For a job in Bow Common, access comes first. Give us the hours we can be on site and we’ll schedule to suit.

  1. We start with your penetration schedule, drawings or specification.
  2. Access, permits and the order of areas are agreed with the site team.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned first.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. We tell you about openings that need a different product.

Before we start on site

  • Clear stock, furniture or equipment away from the joints
  • Send your site hours and access windows
  • Warn occupants and staff about the work

Request a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.

Get a price

Advice

About our fire stopping in Bow Common

We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. Site teams most often ask us about unsealed openings around new pipes and cables and openings found when ceilings come down for a refit, across linear gaps at wall heads, small duct penetrations where the tested detail allows and service gaps in risers. Whoever orders the work in Bow Common, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.

Fit-outs and M&E works in London buildings often leave service penetrations open behind ceilings and in risers. Fire-rated sealant goes in where it’s the specified item; where a collar, wrap or batt is called for instead, we flag it.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

Place
Bow Common (E14, E3, E1)
Region
Greater London
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Penetration seals near Bow Common

The 2 miles around Bow Common include nine care or nursing homes. Where new services have gone through compartment walls in a care setting, the gaps need the specified product. 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.

Wherever services are added at a hospital such as Mile End Hospital, 1 mile north-west of Bow Common, the compartment line has to be made good with the specified product. In a retail centre such as Anchor Retail Park, 1.2 miles to the west of Bow Common, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail. At a college such as Onelab College, which lies north-east of Bow Common, checking penetration seals after summer M&E works is good practice.

Bow Common is about 2 miles east of Whitechapel, in Greater London. Our applicators travel to Bow Common for work on service penetrations. Bow Common is one of 764 places in Greater London on our list.

We cover the E14, E3 and E1 postcode districts for service penetrations. Streets here include Market Way, Knapp Road and Thomas Road, and sites on any of them can send details for a fixed quote. If your building is just outside Bow Common, we cover Limehouse (1 mile west), Bromley-by-Bow (1 mile north-east), Mile End (1 mile north-west), Poplar (1 mile south) and Canary Wharf (1 mile south). Nearby towns on our patch include London (3 miles south-west), City of Westminster (6 miles west), Marylebone (5 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Walthamstow (5 miles north).

Around Bow Common

We work on buildings around Stebon Primary School, The Widow's Son pub and Bartlett Park. The closest station to Bow Common is Limehouse station, about 0.8 miles south-west of the centre. A little further out are Tower of London (2.4 miles west) and St Clement's Hospital (0.6 miles north-west). Open spaces near Bow Common include Tower Hill and Hollow Pond.

Map of Bow Common © OpenStreetMap contributors

FAQs: Bow Common

Can you seal penetrations in a hotel in Bow Common after a refit?

Yes, where the specification calls for fire-rated sealant. Each seal follows the tested detail, and rooms are done in turn.

Will you plan work around the academic year at somewhere like University of Cumbria in London?

Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

How much does the work cost?

Every job gets its own fixed quote. For yours, call 01277 525 020 or email the details over with a description of the work.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.

Will you just go over the old sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

What hours do you work?

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 offer coloured sealant?

That depends on the product. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.

When something else is needed

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Gaps in walls that were never built as compartment walls
  • Fire doors, dampers or other fire safety equipment
  • Issuing fire ratings or certificates for seals

Not sure which it is? You can ring 01277 525 020 or email drawings and photos and we will tell you honestly.

What we seal

  • Pipe penetrations
  • Cable penetrations
  • Joints between fire-resisting walls and floors
  • Small duct penetrations where the tested detail allows
  • Linear gaps at wall heads
  • Service gaps in risers

How the quote is worked out

To price the job, we consider:

  • Whether the work must be split into stages
  • The site’s rules and procedures
  • The product specified
  • How much there is to seal

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.

Details that help us quote

We can often quote from photographs and a few details. It helps to include:

  • Where the site is, with the postcode
  • Any dates the work must fit around
  • Any specification or named product
  • The type of building and who uses it

The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or give us a call on 01277 525 020 or email the details over to discuss it first.

Keeping the joints sound

Regular inspection catches problems early. In particular:

  • Don’t let anyone top up a fire seal with the wrong product
  • Get seals inspected before ceilings and boxing close
  • Put resealing into every M&E and fit-out package
  • Agree the fire-stopping specification before services go in

Once the seals are in, tell other trades they exist and must not be disturbed. Any seal cut back for a new service needs reinstating to its tested detail, by someone who knows the system.

Looking at service areas on a regular cycle pays off. Catching a damaged seal early keeps the fix small compared with dozens found at once.

What the job involves on each surface

Masonry and concrete

Block walls and concrete floors are common substrates for penetration seals. Dust and debris are cleared from the opening, so the sealant and any backing sit properly.

Plastic pipes

Plastic waste pipes through slabs come up often. The detail decides whether sealant alone is enough, and we’ll never swap a specified collar for sealant.

Doing it in-house

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

Accreditations

Trusted. Accredited. Insured.