Greater London · England
Fire-rated sealant in Northwood, Greater London
Fire rated sealant for Northwood and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Unsealed gaps around fire door frames
- Joints picked up in a fire-stopping survey
- Gaps where walls meet ceilings or slabs
Workplaces and buildings in Northwood
In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details. Many London buildings have tight access and loading restrictions, and out-of-hours working is possible to arrange.
If you look after a church, hall or community building such as Emmanuel Church, gaps around pipes and cables are worth checking after any building work there. For site and facilities teams at buildings such as Frithwood Primary School, fire-stopping around service openings should be restored whenever new services go in.
Northwood is about 3 miles south-east of Rickmansworth, in Greater London. Every kind of property in Northwood is covered for fire rated sealant. Every job comes with our one-year guarantee. Our Greater London coverage runs to 764 places, Northwood among them. You can also see our page for London, roughly 16 miles from Northwood.
Jobs for fire rated sealant in HA6 is quoted and booked the same way as anywhere else. You’ll find streets such as Little Stream Close and Sandy Lodge Way, and we cover them all. Neighbouring places we cover for fire rated sealant include Eastbury (1 mile north-east), Moor Park (1 mile north-west), Batchworth Heath (1 mile west), Batchworth (2 miles north-west) and Holywell (2 miles north). We also work in nearby towns such as City of Westminster (14 miles south-east), Marylebone (14 miles south-east), Kensington (12 miles south-east), St Pancras (14 miles south-east), Hampstead (11 miles south-east) and Ruislip (3 miles south).
What’s near Northwood
Around Northwood, our work takes us to homes and buildings near King George V Playing Fields, The Gate Public House and London School of Theology. For rail, the closest station is Carpenders Park station, roughly 1.7 miles north-east. A little further out are Harlequin Centre (2.9 miles north-east) and Heath Robinson Museum (2.2 miles south-east). For a walk, there’s Dews Farm Sand Pits and Tumbling Bay.
Fire rated sealant in Northwood, done properly
Intumescent sealant looks much like any other sealant until it gets hot; then it swells to help close the gap. Which product suits a gap depends on its width, the materials either side and what runs through it, so we follow the tested detail for each one. We’re often asked to deal with sealant items on a fire risk assessment action list and seals cut through by electricians, plumbers or data installers, across plasterboard & masonry, service penetrations and pipe & cable gaps.
In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. In Northwood, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Northwood (HA6)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Northwood
What else we do in Northwood
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Ask which product was used before you paint
- Tell trades working in the building that fire seals must be put back
- Photograph sealed gaps before they’re covered up
- Keep general-purpose foam and caulk away from fire-stopping gaps
Keep the record we give you with the building’s fire safety documents. It helps whoever checks the building next.
When you plan work that goes through walls or ceilings, plan the fire stopping too. Doing it at the time avoids leaving gaps behind.
Landlord and commercial work in Northwood
For anyone letting property in or around Northwood, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
Leave it or put it right?
An unsealed gap lets smoke and fire get round a wall that was built to hold them back. A proper seal lets the wall do its job again, and the work involved is often modest. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Northwood, the repair is bigger than a sealant job.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why Northwood clients choose us
- More than 20 years in sealant work
- A 12-month guarantee on all work
- Approved under the ARBOMaster scheme
- Tidy, careful work
How it works
There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours for a handful of gaps, and longer for a whole building, including the tidy-up. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Northwood. A visitor permit or a nearby bay makes the visit run more smoothly.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out and the faces cleaned.
- We fit backing where needed and apply the fire-rated sealant to depth.
- Every location is recorded with the product used for your records.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or email us.
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Common problems we fix in Northwood
Many open fire-stopping gaps are made after the building is finished. Electricians, plumbers and data installers drill through walls and ceilings and the hole round the new service is not always sealed again.
Keep an eye out for these signs:
- Open holes round services passing through fire walls
- Sealant items on a fire risk assessment action list
- Standard silicone or caulk in a fire-stopping gap
- Fire seals that have cracked with movement
Rented homes near Carpenders Park station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.
Comparing quotes
- Whether VAT is included
- Whether you can choose the colour
- Whether they seal over old material or remove it
- What insurance they hold
Common questions in Northwood
I let a flat near Carpenders Park station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Do you cover Northwood for fire rated sealant?
Yes, Northwood is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
What should I tell you?
Let us know what needs doing and where, plus pictures if you have them. We will ask anything else we need to know.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you carry out fire risk assessments?
No. Your fire risk assessor, designer or building control decides that. We apply fire-rated sealant to the requirements they set.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we’re using and why.
What affects the cost of fire rated sealant
We don’t publish a price list. The quote depends on:
- How easy the joints are to reach
- The old material and how stubborn it is
- The number and length of the joints
- Working hours on commercial sites
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Photos by email, if that is easy
- Any previous sealing or DIY work
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Surface by surface
Flats and HMOs
Converted houses often have gaps around old and new services. We seal the ones on your specification with a tested product and record where they are.
Service penetrations
A copper pipe, a cable and a plastic pipe can all need different fire-stopping details. We follow the manufacturer’s tested detail for each, and tell you if sealant alone is not the right fix.