Havering-atte-Bower fire stopping
Planning work on a service penetration in Havering-atte-Bower? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Builders’ foam or ordinary silicone in compartment walls
- Fire seals cut back for extra cables and never reinstated
- Open linear gaps along the top of fire-resisting walls
Fire stopping across Havering-atte-Bower
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How the quote is worked out
Before we quote, we look at:
- The product specified
- The size and state of each joint
- Any access equipment needed
- The site’s rules and procedures
What a job costs comes down to the quantity of joints, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.
Sending details for a quote
It doesn’t need to be a full survey. A few details are enough to get going:
- Any specification or named product
- Whether the building will be occupied during the work
- Asbestos survey details if the building is older
- When you need the work done
Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, speak to us on 01277 525 020 or email the details over.
About our fire stopping in Havering-atte-Bower
Opened ceilings and riser doors often reveal service openings nobody sealed. If a specification already covers those walls and floors, we can reseal to it, matching the product and detail it names. With no specification in place, the first step sits with your designer or fire engineer, not with us. If you are dealing with improvised or mixed-product fire seals and openings found when ceilings come down for a refit, we can put it right, whatever the surface. For commercial sealant work in Havering-atte-Bower, 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. If sealant is the specified product we fit it to its tested detail, and if the detail needs something else, you’ll hear it from us.
The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Place
- Havering-atte-Bower (RM4)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
On site: what to expect
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. In Havering-atte-Bower, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- 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.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- 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.
Getting the site ready
- Send your site hours and access windows
- Send any specification or drawings in advance
- Tell staff and tenants when we’ll be in
Get a fixed quote
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Advice
Why deal with it now?
It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach, and the right detail can be checked at the time. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well.
What you get with us
- A Constructionline member, so easy to vet
- One phone line for London, the South East and Scotland
- CHAS accredited contractor
- Workmanship guaranteed for 12 months
Take a look at what affects the cost and our accreditations.
Keeping the joints sound
Your facilities or cleaning team can help the joints last. Share these points with them:
- Treat an open penetration as a priority repair
- Don’t let anyone top up a fire seal with the wrong product
- File the specified details where the next contractor can find them
- Agree the fire-stopping specification before services go in
Don’t patch a fire-rated seal with anything outside its tested detail. A repair should use the original product, installed the same way unless the designer specifies otherwise.
Keep a register of where seals are and what they are made of. It tells the next contractor exactly what to reinstate, and it helps at inspections.
Site staff or a sealant specialist?
Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
Compartment walls and floors in Havering-atte-Bower
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. 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. Our part stays the same: the specified product, installed to its tested detail.
Halls and meeting rooms at places like Church of St John the Evangelist sometimes gain new services, and any compartment wall crossed needs the specified seal. For a site team at a college like Havering Technical College (1.9 miles east of Havering-atte-Bower), fire-rated sealing is best scheduled after the summer works.
Havering-atte-Bower is about 3 miles north-west of Harold Wood, in Greater London. Across the RM4 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 764 places in Greater London. Sites around London have their own page, about 15 miles away.
Business premises anywhere in RM4 are within our area. If your site is on North Road, Broxhill Road and Bower Farm Road or close by, we can quote for service penetrations. If your building is just outside Havering-atte-Bower, we cover Chase Cross (1 mile south-west), Stapleford Abbotts (1 mile north-west), Redbridge (2 miles west), Lambourne End (2 miles west) and Lambourne (3 miles north-west). Further afield, our area takes in London (15 miles south-west), St Pancras (15 miles south-west), Shoreditch (13 miles south-west), Walthamstow (9 miles west), Hoxton (13 miles south-west) and Whitechapel (13 miles south-west).
Around Havering-atte-Bower
In Havering-atte-Bower, that means premises near The Top Oak pub, Havering Country Park and Bower Park Academy. The nearest railway station is Harold Wood station, about 2.7 miles south-east of the centre. Other landmarks nearby include Romford Shopping Hall (2.8 miles south) and Harold Wood Hospital (2.5 miles south-east). For a walk, there’s Bedfords Park.
What we are called out for in Havering-atte-Bower
A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. It may look closed, but it has no tested fire performance in that position.
Common reasons buildings call us in:
- Seals that don’t match their tested detail
- Old intumescent sealant that has split away
- Openings left by services added after handover
- Builders’ foam or ordinary silicone in compartment walls
In a retail centre such as Romford Shopping Hall, which lies south of Havering-atte-Bower, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail.
What your quote should include
- Do they follow the manufacturer’s priming guidance?
- Is the sealant right for the movement and the substrate?
- Will RAMS and insurance details be available?
- Their pre-qualification and accreditations
Also near Havering-atte-Bower
More services for Havering-atte-Bower
Questions about Havering-atte-Bower
What happens to BS 476 references for fire stopping in Havering-atte-Bower?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Would you work within a site like Victoria Hospital?
Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.
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.
Can you fit around our working hours?
We are in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
How long does a typical visit take?
We plan the time on site around your programme and access. You’ll have an expected duration with the quote.
Do you work to architects’ specifications?
Yes. Include it with the drawings when you ask for a quote, and we’ll price the work to it.