The Mastic Doctor team standing beside their branded vans outside an office building
Oxfordshire · England

Fire-rated sealing and fire stopping in Duns Tew, Oxfordshire

We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Duns Tew and the surrounding area. Send details for a fixed quote.

  • Open linear gaps along the top of fire-resisting walls
  • Unsealed openings around new pipes and cables
  • Unsealed penetrations discovered above suspended ceilings
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping near Duns Tew

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Cost factors for service penetrations

A fixed quote reflects the actual work. It allows for:

  • Whether old sealant has to be cut out first
  • The size and state of each joint
  • How much there is to seal
  • Specialist products, such as fire-rated or hygienic sealants

There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.

What we need to price the job

A good diagnosis starts with the right details. Tell us:

  • The asbestos register, for older buildings
  • Photos of the joints, close up and from further back
  • Whether the building will be occupied during the work
  • How the joints are reached, and at what height

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Fire stopping in Duns Tew, done properly

Where pipes, cables and other services cross a compartment wall or floor, the opening around them has to be closed so fire and smoke can’t move between compartments. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal, not a rule of thumb. If you have improvised or mixed-product fire seals and builders’ foam or ordinary silicone in compartment walls, we can help. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Duns Tew, preparation and product choice get the time they need.

Rural conversions around Duns Tew can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Duns Tew (OX25)
Region
Oxfordshire
Cover
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

Why act early in Duns Tew

Sealing behind the M&E trades area by area beats a sweep at the end. While the area is still open, every opening is easy to see and reach, and the right detail can be checked at the time. For buildings around smaller places like Duns Tew, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.

A quote for service penetrations depends on how many there are, their condition and the access. Call for a quote.

Why appoint us

  • Health and safety: CHAS accredited
  • Clear, fixed quotes
  • Sealing commercial buildings since 2005
  • One phone line for London, the South East and Scotland

See our cost guide or our accreditations.

When it isn’t the sealant

Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be one of these:

  • Large openings beyond what any sealant detail covers
  • Walls or floors that aren’t fire-resisting to begin with
  • Deciding what a wall or floor needs, which belongs to the designer

If you are not sure, just give us a call on 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Surfaces we seal

  • Cable penetrations
  • Joints between fire-resisting walls and floors
  • Service gaps in risers
  • Linear gaps at wall heads
  • Pipe penetrations
  • Small duct penetrations where the tested detail allows

Questions we’re asked in Duns Tew

Is a smaller place like Duns Tew outside your area?

Not at all: smaller places are covered as well as towns. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

Will you take on work at estates like Hatch End Old Industrial Estate, close to Duns Tew?

Yes. Our area takes in Duns Tew and its surroundings, with estates and business parks such as Hatch End Old Industrial Estate included. Send details of the unit and the work through our quote form for a quick quote.

Do you work in Scotland as well as England?

Building standards in Scotland are separate from England’s, and England uses Approved Document B. Wherever the site is, our work follows the specification and the tested detail.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

Do you have third-party installer accreditation for fire stopping?

No. We don’t hold a third-party fire-stopping installer certificate. We are CHAS accredited and a Constructionline member, and our applicators are CSCS-carded. If your contract requires third-party installer certification, we’re not the right fit for that package.

Can you handle several sites?

Yes. Several buildings can share a single quote, with one point of contact.

What does an EI 60 rating mean?

The tests are BS EN 1366-3 for penetrations and BS EN 1366-4 for linear joints, and classification is to BS EN 13501-2. EI 60 means integrity and insulation for 60 minutes in the tested arrangement and the installation has to match the test.

On site: what to expect

We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you, and each area is checked before we leave it. Smaller jobs around Duns Tew can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. The specification and schedule come first, so we know which details apply.
  2. Access, permits and the order of areas are agreed with the site team.
  3. We compare every service penetration with its tested detail before sealing.
  4. Unsuitable material is removed and the opening cleaned so the seal starts clean.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. We tell you about openings that need a different product.

Getting the site ready

  • Agree which areas must stay open
  • Let us know about inductions and permits
  • Share your working hours and any access restrictions

Request a quote

Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. For a chat about it beforehand, ring 01277 525 020 or use the quote form.

Get a price

Advice

Fire stopping around Duns Tew: how the place shapes the job

Duns Tew lies roughly 62 miles out from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls. Fire stopping of openings and penetrations in England falls under Approved Document B. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Either way, we install the specified product to its tested detail.

For a building such as Church of St Mary Magdalene, new heating or data runs are the usual reason penetrations need sealing. For a unit at a site such as Hatch End Old Industrial Estate, 1.6 miles to the south-east of Duns Tew, new power or data runs between office and warehouse can breach a compartment wall.

Duns Tew is about 8 miles south of Banbury, in Oxfordshire. Looking for fire stopping in Duns Tew? We can help, as we do across Oxfordshire. Duns Tew is one of 423 places in Oxfordshire on our list for service penetrations. Oxford is covered too, around 15 miles from Duns Tew.

Work on service penetrations is covered throughout OX25, whatever the building. If your site is on Main Street, Glebe Court and Middle Barton Road or close by, we can quote for service penetrations. Sites close to Duns Tew are covered too, including Dane Hill (1 mile north-east), North Aston (1 mile east), Middle Aston (1 mile south-east), Steeple Aston (2 miles south-east) and Nether Worton (2 miles west). Nearby towns on our patch include Oxford (15 miles south), Banbury (8 miles north), Bicester (8 miles south-east), Witney (13 miles south-west), Kidlington (9 miles south) and Headington Quarry (14 miles south-east).

Around Duns Tew

In Duns Tew, that means premises near The White Horse Inn. Duns Tew’s nearest station is Heyford station, about 2.8 miles south-east of the centre. Other landmarks nearby include Old Forge Museum (Great Tew) (3.9 miles west) and Deddington Castle (2.1 miles north-east).

Map of Duns Tew © OpenStreetMap contributors

How the job changes by surface

Metal pipes

Copper and steel pipes are a common service penetration for fire-rated sealant. Pipe diameter, annular gap, sealant depth and any pipe insulation all have to match the detail.

Small ducts

Ducts are only sealed with sealant where the detail allows it. The ductwork, its supports and any dampers are for the ductwork contractor.

Work for main contractors and building owners

Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Duns Tew can form part of a wider programme across Oxfordshire.

Accreditations

Trusted. Accredited. Insured.