Greater London · England

Strand-on-the-Green Fire Rated Sealant

Fire rated sealant across Strand-on-the-Green and nearby, with old sealant always removed completely.

  • New service routes left unsealed after building work
  • Cracked or shrunken fire-rated sealant
  • Gaps around pipes and cables through fire-resisting walls

Book fire rated sealant in Strand-on-the-Green

DIY sealant or a professional job?

If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.

Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.

Fire rated sealant in Strand-on-the-Green, done properly

Fire-rated sealant closes the gaps around pipes, cables and frames where they pass through a fire-resisting wall or floor. Each gap is sealed to the product maker’s tested detail for its size and substrate. We work on door frames, pipe & cable gaps and plasterboard & masonry, and common reasons people get in touch are gaps left after a refit or conversion and unsealed gaps around fire door frames.

Commercial work in London comes with its own logistics: loading restrictions, building rules and tight access. Timings and access are agreed with the building before work starts in Strand-on-the-Green.

Big or small, it’s backed by our one-year guarantee in Strand-on-the-Green and across Greater London.

Location
Strand-on-the-Green (W4, TW9, TW8)
Region
Greater London
Cover
One year on every job
Quotes
A clear quote up front
Call
0345 464 0079
Updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

How the job changes by surface

Plasterboard walls

Many fire-resisting walls in flats, offices and conversions are plasterboard. We use a product tested in that kind of wall.

Masonry and concrete

Core-drilled and broken-out holes in concrete are often irregular. We measure the gap at its widest point to make sure it suits the product.

How we quote for fire rated sealant

Call for a quick quote. What matters most is:

  • When we can work, for business premises
  • How many areas need sealing
  • The type of sealant required
  • Access and height

No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.

Helping us quote

To make quoting easier, please include:

  • What the problem is, such as mould, gaps, leaks or cracking
  • Where the property is
  • Whether it’s a home or a business
  • A few photos by email, if you can

To get a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.

Commercial buildings in Strand-on-the-Green

Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed. 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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.

For landlords with property near Chiswick station, any gap left by new services in shared walls should be closed with a fire-rated product. For buildings such as St Paul's Church, gaps around pipes and cables are worth checking after any building work there. As a London address, Strand-on-the-Green can be tricky for parking: let us know about parking bays, permits or a driveway.

Strand-on-the-Green is about 2 miles south of Acton, in Greater London. If you need fire rated sealant in Strand-on-the-Green, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We are based in Crawley and cover Greater London, Strand-on-the-Green included. Strand-on-the-Green is one of 764 towns and villages in Greater London where we work for fire rated sealant. You can also see our page for London, about 8 miles away.

Postcode districts we cover here for fire rated sealant: W4, TW9 and TW8. Streets in the area include Kew Road, Maze Road and Kent Road, and we cover them all. You’ll find Strand-on-the-Green on the A3000, so it’s easy for us to get to. If you are just outside Strand-on-the-Green, we cover Kew (1 mile south), Grove Park (1 mile east), Gunnersbury (1 mile north), North Sheen (1 mile south) and Turnham Green (1 mile east). Further out, we also cover London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (3 miles east), St Pancras (7 miles north-east) and Shoreditch (9 miles east).

Near you in Strand-on-the-Green

Typical jobs here are in homes near Chiswick School, Kew Green and Bull's Head pub. Other local landmarks include Library for Iranian Studies (1.6 miles north) and Kew College Prep (within half a mile south-west). For rail, the closest station is Chiswick station, about 0.5 miles south-east. A little further out are Livat Hammersmith (2.2 miles east) and Barnes Hospital (1.5 miles south-east). Not far away are Richmond Hill and Kew Gardens Lake.

Map of Strand-on-the-Green © OpenStreetMap contributors

Common questions in Strand-on-the-Green

Do you work in hotels near Strand-on-the-Green?

Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.

Is parking a problem for a job in Strand-on-the-Green?

Parking in Strand-on-the-Green, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.

Do you do fire sealant around door frames?

Yes, where the gap suits a sealant detail. We seal the frame-to-wall gap, not the door itself, and we will mention anything we notice about the door.

What fire rating will the seal have?

That is not something we state or certify. The requirement comes from your assessor, designer or building control, and we apply a product tested for it.

Which products do you use?

Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we are using and why.

Can you tell me which gaps need fire stopping?

No, assessment is not something we do. Once you have a specification or action list from your assessor or designer, we will quote for the sealant work on it.

Will it make a mess?

We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.

Can you seal over the old sealant?

No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.

When something else is needed

It helps to know what we cannot do:

  • Big openings where sealant alone is not the tested solution
  • Fire risk assessments, which need a qualified assessor
  • Walls or floors that weren’t built to resist fire

Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.

Surfaces we seal

  • Pipe & cable gaps
  • Linear gaps
  • Door frames
  • Plasterboard & masonry
  • Flats & HMOs
  • Service penetrations

How the visit works

When we arrive, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. The work usually takes a few hours for a handful of gaps, and longer for a whole building. In Strand-on-the-Green, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.

  1. Before starting, we go through the specification or action list with you.
  2. Each gap is measured and its substrate and service noted.
  3. Unsuitable material such as ordinary foam or silicone is cut out and the gap cleaned.
  4. We fit backing where needed and apply the fire-rated sealant to depth.
  5. Every location is recorded with the product used for your records.

Preparing for the visit

  • Try not to wet indoor joints just before the visit
  • Let us know about earlier repairs to the joints
  • Tell us if parking is tricky

Get a quote

The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.

Ask for a quote

Read more

Leave it or put it right?

Fire-rated sealants need more care than everyday sealant. Depth, backing and surface preparation all affect how a seal performs, so we follow the maker’s details on every gap. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Strand-on-the-Green, the repair is bigger than a sealant job.

Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.

Why us?

  • Sanitary silicone with an anti-fungal additive in wet areas
  • Experience in homes, commercial sites and hotels
  • Every job guaranteed for a year
  • 20+ years of sealant experience

Read our cost guide and our reviews.

How to look after the new joints

To keep the joints looking good and working properly:

  • Include hidden areas like risers in routine checks
  • Don’t paint over fire sealant until it has cured
  • Flag any open gap you spot round a pipe or cable
  • Tell trades working in the building that fire seals must be put back

Avoid covering a sealed gap with anything that is not part of the tested detail. Repairs should use a matching fire-rated product. We can tell you which product we used.

When you plan work that goes through walls or ceilings, plan the fire stopping too. Catching it then saves a separate visit later.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job