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

Fire-rated sealing and fire stopping in Maypole, Greater London

Fire-rated and intumescent sealing of service penetrations and linear gaps in Maypole. CHAS accredited and fully insured, with a 12-month guarantee.

  • Penetration schedules that need working through
  • Damaged fire seals in risers and voids
  • Service penetrations left open after M&E works
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping for businesses in Maypole

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

About our fire stopping in Maypole

Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We don’t hold a third-party fire-stopping installer certificate, and we won’t pretend otherwise. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. We work on service gaps in risers, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors, and the failures we are asked to look at most are improvised or mixed-product fire seals and seals disturbed by maintenance and left open. Most enquiries from Maypole start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

Fit-outs and M&E works in London buildings often leave service penetrations open behind ceilings and in risers. If sealant is the specified product we fit it to its tested detail, and if the detail needs something else, you will hear it from us.

We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Location
Maypole (BR6)
Region
Greater London
Guarantee
A 12-month guarantee
Price
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Owners, agents and contractors

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Maypole can form part of a wider programme across Greater London.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Why deal with it now?

Open penetrations multiply: each new service adds to the list. Keeping on top of it after each round of works keeps the job small and avoids a much larger catch-up later. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.

Why appoint us

  • Public liability insurance in place
  • Constructionline member
  • A fixed quote before work starts
  • Work to your specification and the manufacturer’s guidance

Take a look at how commercial sealant jobs are priced or our accreditations and insurance.

How the job changes by surface

Linear joints

Linear joints run along the head of a wall, at a slab edge or between two fire-resisting elements. Their tested detail, under BS EN 1366-4, sets the width, depth, backing and movement allowed, and we work within it.

Plastic pipes

Waste and drainage pipes through floors are a frequent case. The detail decides whether sealant alone is enough.

Diagnose, treat, sign off

Occupied buildings need a little choreography. The work area is signed and kept contained, 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 Maypole, 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. We plan the sequence of floors, risers and voids with you.
  3. We compare every service penetration with its tested detail before sealing.
  4. Unsuitable material is removed and the opening cleaned.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. We tell you about openings that need a different product.

What we need from you

  • Send any specification or drawings in advance
  • Tell us what induction or permit system the site runs
  • Let building users know which areas are affected

Get a fixed quote

Need a figure for a tender or a budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, call the office on 01277 525 020 or email us.

Get a quick quote

Advice

General trades versus a specialist

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.

FAQs: Maypole

How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Maypole?

Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.

Would you work within a site like Chelsfield Park Hospital?

Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

What do you charge?

Every job gets its own fixed quote. For yours, phone 01277 525 020 or send photos by email with a description of the work.

What happens if old sealant might contain asbestos?

The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.

How long will the new sealant last?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

Do you have public liability insurance?

Yes. We are fully insured, including public liability cover.

Can you follow the specification on our project?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.

Compartment walls and floors in Maypole

In England, Approved Document B covers fire stopping of openings and penetrations. 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. What we install is set by the specification, and it goes in to the tested detail. London’s office and residential buildings are refitted constantly, and each round of cabling or pipework can leave open penetrations. We seal to the specification and the product’s tested detail, working within the building’s permits.

For a school such as Chelsfield Primary School, penetration sealing fits best at the end of the summer works. Like every part of Greater London, Maypole is covered by the ULEZ, so vehicle access, loading and parking are planned before the first visit.

Maypole is about 3 miles south-east of Orpington, in Greater London. We send applicators to Maypole for service penetrations, handled exactly as we handle every other area. Maypole is one of 764 places we cover in Greater London. We also cover London, some 14 miles away.

If you need fire stopping in BR6, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Jubilee Road, Hollybush Lane and Maypole Road, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Bopeep (1 mile south), Well Hill (1 mile east), Chelsfield (1 mile north-west), Badgers Mount (1 mile south) and Goddington (1 mile north-west) for service penetrations. Further afield, our area takes in London (14 miles north-west), Shoreditch (15 miles north-west), Whitechapel (14 miles north-west), Stockwell (14 miles north-west), Orpington (3 miles north-west) and Plaistow (13 miles north-west).

Local landmarks in Maypole

Locally, jobs take us to sites close to Harris Academy Orpington, Hewitt's Chalk Bank and The Bo-Peep pub, among other places. The nearest railway station is Knockholt station, about 0.7 miles south-west of the centre. Other landmarks nearby include Lullingstone Castle (2.4 miles east) and Orpington Hospital (2 miles west). Open spaces near Maypole include The Warren and Summer Hill.

Map of Maypole © OpenStreetMap contributors

What we’re called out for in Maypole

Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are what we find most often.

These are often picked up first by site or facilities staff:

  • Builders’ foam or ordinary silicone in compartment walls
  • Improvised or mixed-product fire seals
  • Openings found when ceilings come down for a refit
  • Unsealed joints where partitions meet the slab

For a unit at a site such as Nugent Retail Park, 2.9 miles north-west of Maypole, any new service through a fire-resisting wall should be sealed to the tested detail.

What your quote should include

  • Their public liability cover
  • What site paperwork they can supply
  • Will CSCS-carded applicators be on site?
  • What the guarantee covers, and for how long

How to choose a sealant contractor

Accreditations

Trusted. Accredited. Insured.