Fire stopping in Chelmsford
We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Chelmsford. Send details for a fixed quote.
- Non-fire-rated filler around services
- Openings left by services added after handover
- Openings found when ceilings come down for a refit
Fire stopping for businesses in Chelmsford
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
On site: what to expect
Tell us your site hours and access windows and we will plan around them. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Town-centre jobs in Chelmsford can mean limited parking and loading, while out-of-town estates normally have yards and car parks. Either way, tell us what’s available.
- We start with your penetration schedule, drawings or specification.
- We plan the sequence of floors, risers and voids with you.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out so the seal starts clean.
- Backing and fire-rated sealant are installed to the detail and tooled.
- Anything outside the detail is reported to you rather than sealed.
Getting the site ready
- Send asbestos survey details if the building is pre-2000
- Let us know about inductions and permits
- Share your working hours and any access restrictions
Ask for a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.
Advice
How we handle fire stopping in Chelmsford
A fire-rated sealant is only one part of a tested system: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. We match each opening to that detail before any sealant goes in, and we say so if it doesn’t fit. Site teams most often ask us about seals disturbed by maintenance and left open and unsealed penetrations discovered above suspended ceilings, across cable penetrations, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors. Whoever orders the work in Chelmsford, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.
Office and retail refurbishments in a large town such as Chelmsford add new services through existing fire-resisting walls. The gaps left behind need sealing with the specified product, installed to the manufacturer’s tested detail.
Work we carry out in Essex comes with a 12-month guarantee. Should something we installed fail, speak to us on 01277 525 020 or send photos by email and we’ll come back to it.
Doing it in-house
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Surface by surface
Plastic pipes
Waste and drainage pipes through floors are a frequent case. Whether sealant alone is acceptable depends entirely on the tested detail.
Metal pipes
Copper and steel pipes are a common service penetration for fire-rated sealant. The tested detail sets the pipe size range, gap, depth and whether insulation can stay on and we confirm each before sealing.
Maintenance after handover
Keep the joints in good shape with a few simple steps:
- File the specified details where the next contractor can find them
- Put resealing into every M&E and fit-out package
- Ask the designer to confirm details early on refits
- Check with the data sheet before painting over fire sealant
Never top up a fire seal with foam, ordinary silicone or filler. Repairs need the same product and detail as the original, or a new specification from the designer.
Specify fire stopping early on refits, not as an afterthought. The designer can then choose details that suit the services planned, and the work runs in step with the M&E.
What we are called out for in Chelmsford
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.
Common reasons buildings call us in:
- Openings left by services added after handover
- Damaged fire seals in risers and voids
- Unsealed joints where partitions meet the slab
- Hidden openings found during inspections
In a hotel such as Best Western Atlantic Hotel (0.5 miles west of Chelmsford), new pipework or cabling through bedroom and corridor walls needs sealing with the specified product.
What your quote should include
- The named product and why it was chosen
- Their public liability cover
- Will CSCS-carded applicators be on site?
- Their plan for phasing and protecting the area
For managing agents and facilities managers
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.
Places near Chelmsford
More services for Chelmsford
Compartment walls and floors in Chelmsford
In England, Approved Document B covers fire stopping of openings and penetrations. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. What we install is set by the specification, and it goes in to the tested detail. Central London is about 30 miles from Chelmsford. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product.
At a retail site such as Riverside Retail Park (under half a mile west of Chelmsford), walls between units may be fire-resisting, so services added in a refit need the specified seal. For an estates team at a campus like Anglia Ruskin University (0.6 miles north-west of Chelmsford), summer M&E works are typically followed by a round of penetration sealing.
Chelmsford is about 30 miles north-east of London, in Essex. Anywhere in CM1, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. 644 places across Essex fall within our area, Chelmsford among them. Sites around London have their own page, roughly 30 miles from Chelmsford.
Postcode districts covered here: CM1, CM2, CM3 and CM4. We cover commercial and managed buildings on Backnang Square, High Street and Barrack Square and the roads nearby. Main routes into Chelmsford include the A12 and A130. Close to Chelmsford, our area also takes in Moulsham (1 mile south-west), Patching (1 mile north-west), Widford (2 miles south-west), Broomfield (2 miles north) and Writtle (3 miles west). Further afield, our area takes in Basildon (11 miles south), Braintree (11 miles north), Brentwood (11 miles south-west), Maldon (8 miles east), Canvey Island (15 miles south) and Billericay (8 miles south). As one of the bigger centres in Essex, Chelmsford has a broad mix of commercial, public and industrial buildings, and we cover them all.
Local landmarks in Chelmsford
Locally, jobs take us to sites close to Our Lady Immaculate Church, The Boswells School and Chelmsford College, among other places. Other local landmarks include Chelmer Valley Riverside (0.5 miles north-west) and The Two Brewers Public House (under half a mile south-west). The closest station to Chelmsford is Chelmsford station, roughly 0.7 miles west of the centre. Other landmarks nearby include Priory Hospital (less than half a mile north) and Peter Edwards Museum And Library (0.8 miles south-west). Open spaces near Chelmsford include Newland Grove.
Common questions from Chelmsford clients
Can you seal around new services in a hotel near Chelmsford?
Yes, to the specification and the product’s tested detail. We match the product to the wall or floor and the services, and say if something other than sealant is needed.
Can you work at a site such as Riverside Retail Park, by Chelmsford?
Yes. We cover Chelmsford and the area around it, including industrial estates, business parks and retail parks such as Riverside Retail Park. A few photos and the unit address let us price the work.
What’s the quickest route to a quote?
The quote form is the simplest route, though you can also call 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
Do you have public liability insurance?
Yes. We’re fully insured, including public liability cover.
Is your workmanship covered by a guarantee?
Yes. The 12-month guarantee covers our preparation and application, though not damage or work by other trades.
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. Work pauses if suspect material is found, until it has been tested.