Oxfordshire · England

Fire-rated sealant in Cholsey, Oxfordshire

Problem with your fire-stopping gaps in Cholsey? We cut out the old, prepare the joints and apply the right sealant.

  • Unsealed gaps around fire door frames
  • Gaps left after a refit or conversion
  • Seals cut through by electricians, plumbers or data installers

Book fire rated sealant in Cholsey

Aftercare tips

How long the joints last depends on use and care. Here’s what we suggest:

  • Never patch a fire seal with standard sealant
  • Check whether a sealant can be painted before decorating over it
  • Keep the record of products and locations with your fire safety documents
  • Photograph sealed gaps before they’re covered up

Keep the record we give you with the building’s fire safety documents. It saves time at the next inspection or assessment.

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

Fire rated sealant in Cholsey

Deciding which gaps need fire stopping is not our role; your assessor, designer or building control sets that out. Our part is applying the specified sealant carefully, to the right depth and with the right backing. We work on flats & HMOs, plasterboard & masonry and door frames, and the jobs we see most are seals cut through by electricians, plumbers or data installers and sealant items on a fire risk assessment action list.

Commercial work around a smaller place like Cholsey normally means a pub, a shop, a school or small business units rather than office blocks. Each needs the same care with its sealant as any larger building.

All our work comes with a one-year guarantee.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Cholsey (OX10)
Region
Oxfordshire
Cover
12 months on all our work
Price
A clear price before any work starts
Call
0345 464 0079
Page updated
26 October 2026

How the visit works

Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to several days, depending on how many gaps there are. A visit to Cholsey is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.

  1. We start with the survey or action list, checking the size and surfaces of every gap.
  2. We remove any old or unsuitable filler and clean the gap.
  3. We put in whatever backing or fill the product detail specifies.
  4. Fire-rated or intumescent sealant is applied to the right depth and tooled.
  5. Finally, we list where we worked and what we used, for your records.

Before we arrive

  • Let us know about stairs, lifts or work at height
  • Plan for the work area to be out of bounds to pets and children
  • Tell us if parking is tricky

Getting a quote

A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.

Get a quick quote

Read more

Should I try it myself first?

Some sealant jobs are within reach of a careful DIYer, 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. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.

When it is not the sealant

Before booking, it’s worth knowing the limits:

  • Openings too large for sealant, which need batts, boards or another system
  • Construction that does not provide fire resistance on its own
  • Certifying a building or signing off its fire safety

Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.

Where we work in Cholsey

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

Cholsey: your questions answered

Can you help a landlord with a rental near Cholsey station?

Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.

Is Cholsey within the area you cover?

Yes, Cholsey is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.

What do you put in the joint?

Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we’re using and why.

Is intumescent sealant the same as fire-rated sealant?

An intumescent material expands when it’s heated. Many fire-rated sealants work this way, but not all, and the choice depends on the gap.

Will you leave a mess?

We keep the work tidy. Nearby surfaces are protected.

Will we have a record of what was sealed?

Yes. We record the locations we’ve sealed and the products used to keep with your fire safety documents.

Are you an approved applicator?

Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.

Are you fully insured?

Yes. Mr Mastic is fully insured.

Workplaces and buildings in Cholsey

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 work to the specification you’re given, installing the product to its tested details.

For site and facilities teams at buildings such as Cholsey Primary School, fire-stopping around service openings should be restored whenever new services go in. Letting a property close to Cholsey station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.

Cholsey is about 5 miles south-east of Didcot, in Oxfordshire. From the centre of Cholsey to the outskirts, we cover fire rated sealant for every kind of property. Our Oxfordshire coverage runs to 443 places, and Cholsey is one of them. There’s also a page for Reading, about 11 miles away.

Jobs for fire rated sealant in OX10 is quoted and booked the same way as anywhere else. That includes homes and businesses on Station Road, Church Road and Lapwing Lane and the roads around them. Neighbouring places we cover for fire rated sealant include Winterbrook (1 mile north-east), North Stoke (1 mile east), Moulsford (1 mile south), South Stoke (2 miles south) and Mongewell (2 miles north-east). Larger places within reach include Oxford (13 miles north), Didcot (5 miles north-west), Abingdon-on-Thames (9 miles north-west), Thame (14 miles north-east), Wantage (12 miles west) and Henley-on-Thames (11 miles east).

Local landmarks in Cholsey

In Cholsey, that means homes and buildings near Wallingford School, Cranford House School and Morning Star pub and the streets around them. Cholsey has its own railway station: Cholsey station. Other landmarks nearby include Wallingford Castle (2.4 miles north-east). The countryside around Cholsey includes Cholsey Marsh and Wittenham Clumps.

Map of Cholsey © OpenStreetMap contributors

What the job involves on each surface

Flats and HMOs

In flats and HMOs, the walls and floors between homes and common areas need sealing where services pass through. We seal the gaps your assessor has identified room by room.

Service penetrations

Pipes, cables and ducts passing through fire-resisting walls and floors each leave a gap. The sealant is chosen for what passes through and how wide the gap is.

Signs you need fire rated sealant in Cholsey

Gaps also open up as buildings move: a seal that cracks or pulls away leaves a path for smoke. Damage from cleaning, knocks and maintenance adds to it.

Look out for any of the following:

  • Gaps around pipes and cables through fire-resisting walls
  • Open gaps behind door architraves
  • Old fire sealant that has split or come away
  • Gaps flagged on a fire risk assessment

Community buildings like Church of St Mary are part of the picture too: gaps around pipes and cables are worth checking after any building work there.

What your quote should include

  • What guarantee comes with the work
  • What preparation is included
  • When the joint can take water or movement
  • Whether you can choose the colour

How to choose a mastic man

Quotes for fire rated sealant in Cholsey

Your quote is based on your job. We look at:

  • The number of rooms or windows
  • The product the joint needs
  • The size of the job
  • Any mould that needs treating

A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.

What we need to know

Photos by email are helpful but not essential. Try to tell us:

  • Any previous sealing or DIY work
  • Access, such as stairs, a lift or height
  • Where the job is, and your postcode
  • The rough size of the job

There’s no standard price list. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or drop us an email.

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