Southampton · England

Fire-rated sealant in Shirley, Southampton

Fire rated sealant for Shirley, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.

  • New service routes left unsealed after building work
  • Standard silicone or caulk in a fire-stopping gap
  • Fire stopping disturbed by later work

Trusted fire rated sealant in Shirley

About our fire rated sealant in Shirley

Until it’s heated, intumescent sealant behaves like an ordinary sealant; in a fire it expands into the joint. 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 work on plasterboard & masonry, service penetrations and linear gaps, and common reasons people get in touch are fire seals that have cracked with movement and linear gaps at the head of walls.

If you run a pub, café, guest house or shop in or near Shirley, its washrooms and kitchen need the same sealant care as any big building, and fire-rated sealant around service openings should be restored after new pipes or cables go through.

You get a 12-month guarantee, the same in Shirley as everywhere else we work.

Location
Shirley (SO15, SO16, SO17)
Wider area
Southampton
Guarantee
One year on every job
Quotes
A clear quote up front
Phone
0345 464 0079
Last updated
26 October 2026
Mr Mastic applicators lined up beside the company vans, one holding a sealant gun

Fire rated sealant in Shirley: local notes

For seaside hotels, guest houses and holiday lets around Shirley, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. There are hotels and other places to stay in and around Shirley. Hotel work can be planned room by room, with out-of-hours working where needed.

Managing a site like Wordsworth Primary School? Then fire-stopping around service openings should be restored whenever new services go in. Rented homes near Millbrook (Hants) station change hands often, and new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.

Shirley is about 2 miles west of Southampton, in Southampton. Homes, rented property, offices and hotels in Shirley can book us for fire rated sealant, old or new, large or small. The work is guaranteed for a year. Our Southampton coverage runs to 40 places, Shirley among them.

Every address in SO15, SO16 and SO17 is covered for fire rated sealant, from the main roads to the quietest streets. That includes homes and businesses on May Road, Dyer Road and York Road. Shirley is on the A3057, which makes it straightforward to reach with everything needed for fire rated sealant. If you are just outside Shirley, we cover Regents Park (1 mile west), Freemantle (1 mile south), Millbrook (1 mile south-west), Coxford (1 mile north-west) and Maybush (1 mile north-west). We also work in nearby towns such as Townhill Park (3 miles east), Midanbury (3 miles east), Thornhill (4 miles east), Chartwell Green (4 miles east), Harefield (4 miles east) and Itchen (3 miles south-east). Being one of Southampton’s larger places, Shirley has every kind of property, from flats to offices.

Around Shirley

We work in homes and buildings around The Crown Public House, St James' Park and Regents Park Community College, among other places. The closest station to Shirley is Millbrook (Hants) station, roughly 0.7 miles south. Other landmarks nearby include Netley Castle (4.4 miles south-east) and Foresters Museum & Archive (1 mile south-east). Not far away are Testwood Lakes.

Map of Shirley © OpenStreetMap contributors

How to look after the new joints

Joint life depends on how it’s used and looked after. Here’s what we suggest:

  • Keep photos of seals that will be hidden
  • Get damaged fire seals looked at promptly
  • Don’t fill fire-stopping gaps with ordinary foam or silicone
  • Look in service cupboards and ceiling voids from time to time

Let contractors know where fire stopping has been done, and ask them to reseal anything they cut through. A lot of damaged fire stopping comes from later work.

When you plan work that goes through walls or ceilings, plan the fire stopping too. Doing it at the time avoids leaving gaps behind.

Should I try it myself first?

A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.

What the job involves on each surface

Linear gaps

Head-of-wall gaps are often hidden above suspended ceilings. We seal them along their full length so there are no open sections left.

Masonry and concrete

Holes through concrete and block are rarely neat. We check the gap size around the service against the product’s tested range.

What sealant work cannot fix

We’ll always be straight with you, so here’s what new sealant won’t do:

  • Issuing a fire rating or certificate for a building
  • Big openings where sealant alone is not the tested solution
  • Deciding what fire stopping a building needs

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

Where we work in Shirley

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

How we quote for fire rated sealant

Your quote is based on your job. We take into account:

  • Access and height
  • The size of the job
  • When we can work, for business premises
  • How much old sealant there is and how hard it is to remove

Combining jobs into one visit is generally more efficient than separate visits. We will give you a clear quote for the lot.

What we need to know

Photos help, but a description is a good start. Try to tell us:

  • The type of property
  • Where the property is
  • The problem you’ve noticed
  • The rough size of the job

Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or send us an email.

How the visit works

Before we leave, we go over the finished joints with you and explain the cure time. The visit itself usually 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 smaller place like Shirley, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.

  1. Access to each area is agreed so the work can run in order.
  2. We take out any damaged or unsuitable sealant.
  3. Gaps are cleaned of dust and loose material.
  4. We apply and tool the sealant to the product’s tested detail.
  5. We record what was done and flag anything that needs a different system.

How to prepare

  • Keep children and pets away from the work area
  • Move anything stored near the joints
  • Mention if the joints have been sealed before

Get a quote

The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.

Get a quick quote

Read more

What we’re called out for in Shirley

Sometimes the wrong product was used from the start: general-purpose foam, everyday silicone or caulk in a place that needed a tested fire seal. It looks sealed, but it is not fire-rated.

If you can see any of these, it’s time to have the joints looked at:

  • Joints picked up in a fire-stopping survey
  • Gaps around pipes and cables through fire-resisting walls
  • Fire seals that have cracked with movement
  • Open gaps behind door architraves

Community buildings like Shirley Parish Church are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.

Questions to ask before booking

  • Who turns up on the day
  • What happens if they find a problem under the old sealant
  • Whether VAT is included
  • What the cure time is

How to choose a mastic man

Your questions about fire rated sealant in Shirley

I let a flat near Millbrook (Hants) station. Can you help?

Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.

Do you cover smaller places like Shirley?

Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.

Is it messy?

No. We work neatly, protect the area around the joints and tidy up afterwards.

What’s the difference between intumescent and fire-rated sealant?

Intumescent describes a material that swells in heat. Many fire-rated sealants work this way, but not all, and the choice depends on the gap.

Should I try DIY first?

It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.

Do you seal gaps around fire door frames?

Yes. Gaps behind architraves are a common job for us. The door and its fittings are a separate job for a door specialist.

Do you take out the old sealant first?

Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.

How long does the job take?

Typically it takes anything from a few hours to several days, depending on how many gaps there are. Bigger jobs take longer, and we’ll tell you how long to expect.

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