Essex · England
Chignall St James Fire Rated Sealant
Intumescent and fire-rated sealant around gaps, frames and service penetrations in Chignall St James, with a 12-month guarantee on every job. Call for a quick quote.
- Linear gaps at the head of walls
- Holes left by a change of layout
- Ordinary sealant used where a fire-rated product was needed
Fire rated sealant for homes and businesses in Chignall St James
In flats, HMOs, offices and schools, fire stopping is often disturbed by later work. One new cable or pipe can leave a gap that nobody goes back to seal. We seal them with a product tested for that kind of gap. If you are dealing with door frames with gaps between frame and wall and joints picked up in a fire-stopping survey, we can help, whatever the surface.
For holiday lets, converted business premises or a community building near Chignall St James, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Chignall St James (CM1)
- Region
- Essex
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What the job involves on each surface
Service penetrations
Different services need different details: metal pipes, cables and plastic pipes are not treated the same. Each one is sealed to the product’s tested detail.
Door frames
We deal with the gap around the frame, not the door. Doors, seals and closers are for a door specialist, and we’ll say if we spot a problem with them.
When something else is needed
We won’t take on work that will not last, so these are the limits:
- Fire doors that need new seals, closers or hardware
- A wall that is not a fire-resisting element to begin with
- Large holes that need a different fire-stopping system
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Chignall St James
- Linear gaps
- Door frames
- Pipe & cable gaps
- Service penetrations
- Plasterboard & masonry
- Flats & HMOs
Your questions about fire rated sealant in Chignall St James
Do you cover Chignall St James for fire rated sealant?
Yes, Chignall St James is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Chelmsford station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Can you tell me which gaps need fire stopping?
No. We follow the requirements from your assessor, designer or building control and install to the manufacturer’s details.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Chignall St James, along with the rest of our area.
What’s the difference between intumescent and fire-rated sealant?
An intumescent sealant expands when it gets hot. It’s one type of fire-rated sealant; the right one depends on the gap and what passes through it.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Do you have insurance?
Yes, we’re fully insured.
How the visit works
At the end, we look at the finished work together. The work normally takes from a few hours to a few days, depending on the number of gaps and the access, depending on the size of the job. In a small place like Chignall St James, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we work through your list or survey, measuring each gap and checking what it’s formed in.
- Old or unsuitable sealant is cut out and the gap cleaned.
- We put in whatever backing or fill the product detail specifies.
- Fire-rated or intumescent sealant is applied to the right depth and tooled.
- We record the locations and products used for your records.
Before we arrive
- Mention any tricky access
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Related advice
Landlords, agents and businesses in Chignall St James
Landlords and letting agents in Chignall St James can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Fire rated sealant around Chignall St James
Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We work to the specification you’re given, installing the product to its tested details.
Letting a property close to Chelmsford station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. If you look after a building such as Newlands Spring Primary School, gaps opened by contractors for new cabling are a common finding in schools and offices.
Chignall St James is about 3 miles north-west of Chelmsford, in Essex. Across the CM1 area, we cover fire rated sealant for homes and businesses. 644 places in Essex are on our list.
Every address in CM1 is within our area for fire rated sealant, from the main roads to the quietest streets. Nearby, we also carry out fire rated sealant in Chignall Smealy (1 mile north), Patching (2 miles east), Broomfield (2 miles east), Writtle (2 miles south) and Breeds (2 miles north-east). Within a short drive, we also cover Chelmsford (3 miles south-east), Basildon (13 miles south), Braintree (10 miles north-east), Harlow (13 miles west), Brentwood (11 miles south-west) and Maldon (11 miles east).
Around Chignall St James
Around Chignall St James, our work takes us to homes and buildings near The Three Elms pub. For rail, the closest station is Chelmsford station, about 2.6 miles south-east of the centre. Other landmarks nearby include Peter Edwards Museum And Library (2.7 miles south-east) and Broomfield Hospital (2 miles north-east). The countryside around Chignall St James includes Newland Grove.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Tell trades working in the building that fire seals must be put back
- Photograph sealed gaps before they’re covered up
- File the fire-stopping record where your assessor can find it
- Ask which product was used before you paint
File the record of locations and products with your fire safety paperwork. It helps whoever checks the building next.
Open gaps don’t only matter in a fire: they also let noise, draughts and sometimes pests through. Dealing with them early helps with all of these.
When to call us in Chignall St James
In some buildings the gap was filled with the wrong thing in the first place: general-purpose foam, everyday silicone or caulk in a place that needed a tested fire seal. It may look fine, but it isn’t a fire-rated seal.
These are the problems we’re asked about most:
- Gaps left after a refit or conversion
- Gaps flagged on a fire risk assessment
- Gaps filled with a product that isn’t fire-rated
- Door frames with gaps between frame and wall
For buildings such as Former Church of St James, older buildings that have had new heating or wiring often have service gaps worth checking.
Questions to ask before booking
- Whether they seal over old material or remove it
- What happens if the job turns out different
- The length of the guarantee
- Whether you can choose the colour