Fire-rated sealing and fire stopping in Blackheath, Greater London
Fire stopping for Blackheath, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Unsealed joints where partitions meet the slab
- Unsealed openings around new pipes and cables
- Snag lists that include open service penetrations
Fire stopping for businesses in Blackheath
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping for commercial buildings in Blackheath
No fire sealant works on its own: the evidence covers a specific product, wall or floor type, service, gap, depth and backing. We match each opening to that detail before any sealant goes in, and raise it with you if it falls outside. If you are dealing with old intumescent sealant that has split away and unsealed penetrations discovered above suspended ceilings, we can help. For commercial sealant work in Blackheath, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
After a fit-out or new cabling in a London building, risers and ceiling voids are where open service gaps tend to be found. Fire-rated sealant goes in where it’s the specified item; where a collar, wrap or batt is called for instead, we flag it.
We stand by our work: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.
- Location
- Blackheath (SE3, SE13, SE10)
- Wider area
- Greater London
- Guarantee
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Aftercare for building managers
To get the most from the new sealant:
- Leave fire sealant to cure fully before covering it
- Don’t let anyone top up a fire seal with the wrong product
- Brief every trade that openings they make must be sealed
- Flag new cables with no seal around them
After every round of M&E works, check that the openings created have been sealed. Building it into each contractor’s sign-off keeps the walls intact.
A simple record of seal locations and products helps. When a new service goes through, everyone knows which product and detail to match, and it helps at inspections.
Questions about Blackheath
Is hospital work, at somewhere like Blackheath Hospital, something you do?
Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Do you work in occupied care homes around Blackheath?
Yes. We agree rooms and times with the manager and work a few areas at a time. Any site rules, from signing in to infection control, are agreed before we start.
Is Blackheath in your area?
Yes. Blackheath falls within our area, and you can give us a call on 01277 525 020 or send photos by email to get started.
How do I request a quote?
There are four steps: send details, get a quote, we seal, guaranteed. The first step only needs photos and a postcode.
What does an EI 60 rating mean?
Penetration seals are tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4. Results are classified under BS EN 13501-2, where E is integrity, I is insulation and the number is minutes, as in EI 60. That rating only holds when the product is installed to its tested detail.
Does weather matter for sealant work?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.
From enquiry to sign-off
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- The specification and schedule come first, so we know which details apply.
- We plan the sequence of floors, risers and voids with you.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned first.
- Backing and fire-rated sealant are installed to the detail and tooled.
- Anything outside the detail is reported to you rather than sealed.
What we need from you
- Move anything stored against the joints
- Have the specification and drawings to hand
- Tell us what induction or permit system the site runs
Getting a fixed quote
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or phone 01277 525 020 or email drawings and photos to discuss it first.
Related advice
Common problems we fix in Blackheath
Physical damage is another reason seals stop doing their job. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe and the opening isn’t always resealed.
Site and facilities staff are often the first to spot these:
- Old intumescent sealant that has split away
- Builders’ foam or ordinary silicone in compartment walls
- Damaged fire seals in risers and voids
- Unsealed penetrations discovered above suspended ceilings
Colleges such as Christ the King Sixth Form College, 0.6 miles south-west of Blackheath, add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product.
What to look for in a quote
- Their public liability cover
- What site paperwork they can supply
- Can the work be phased to keep areas open?
- The terms of the workmanship guarantee
Commercial clients in Blackheath
CHAS accredited and a Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
How the job changes by surface
Small ducts
Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Larger or fire-rated ductwork usually needs a different solution set by the designer.
Metal pipes
Sealant details often cover copper and steel pipework. The tested detail sets the pipe size range, gap, depth and whether insulation can stay on.
Places near Blackheath
Other services in Blackheath
What sealant work can’t fix
Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is any of the following:
- Deciding what a wall or floor needs, which belongs to the designer
- Issuing fire ratings or certificates for seals
- Fire doors, dampers or other fire safety equipment
If in doubt, call the office on 01277 525 020 or email drawings and photos and we’ll say what we think.
Where we work in Blackheath
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
- Pipe penetrations
- Linear gaps at wall heads
- Service gaps in risers
Compartment walls and floors in Blackheath
Blackheath has a good number of hotels close by, all within 2 miles. A hotel refit often runs new services through compartment walls between bedrooms and corridors, and each opening needs the specified seal. 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.
For an estates team at a campus like University of Greenwich - Greenwich Campus (1.1 miles north-west of Blackheath), summer M&E works are typically followed by a round of penetration sealing. Hospital estates such as Blackheath Hospital (0.5 miles south of Blackheath) are divided into fire compartments, and any service penetration through them should be sealed to the specified, tested detail.
Blackheath is about 1 mile south-east of Greenwich, in Greater London. Businesses, contractors and managing agents in Blackheath use us for work on service penetrations, as part of our coverage of Greater London. We work across 764 places in Greater London, large and small.
Commercial sites across SE3, SE13 and SE10 are covered. If your site is on Pond Road, Heath Lane and Wemyss Road or close by, we can quote for service penetrations. Just outside Blackheath, we also work in Vanbrugh Park Estate (1 mile north), Greenwich (1 mile north-west), Maze Hill (1 mile north), Lewisham (1 mile south-west) and Westcombe Park (1 mile north-east). Further afield, our area takes in London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (7 miles north-west), Kensington (9 miles west), St Pancras (7 miles north-west) and Shoreditch (5 miles north-west).
Around Blackheath
Locally, jobs take us to sites close to The Princess Of Wales Pub, Blackheath Proprietary School and Manor House Gardens. Blackheath has its own railway station: Blackheath station. Other landmarks nearby include Lewisham Shopping Centre (1.1 miles south-west) and Royal Observatory (0.7 miles north-west). The countryside around Blackheath includes Tower Hill and Birdbrook Road Nature Reserve.