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

Fire-rated sealing and fire stopping in Newington, Oxfordshire

Fire stopping for Newington, from a contractor working since 2005. Fully insured, with a 12-month guarantee.

  • Fire seals cut back for extra cables and never reinstated
  • Unsealed penetrations discovered above suspended ceilings
  • Fire stopping installed outside its tested range
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Need fire stopping in Newington?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Fire stopping in Newington, done properly

Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We hold no third-party fire-stopping installer certificate, and we won’t pretend otherwise. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. If you have improvised or mixed-product fire seals and seals disturbed by maintenance and left open, we can put it right. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Newington, preparation and product choice get the time they need.

A job near Newington is normally planned around one visit, with the specification and photographs sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.

We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Newington (OX10)
Wider area
Oxfordshire
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026

Penetration seals near Newington

Central London is about 45 miles from Newington. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls; the gaps need the specified seal. Fire stopping of openings and penetrations in England falls under Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.

Theatres, wards and plant rooms at sites like Littlemore Hospital (to the north-west of Newington) all have compartment walls crossed by services. In a building such as Church of St Giles, any service penetration through a fire-resisting wall should be sealed to the specified detail. Tenant changes at parks like Monument Business Park, 2.3 miles to the east of Newington, bring new data and services, and openings through fire-resisting walls need the specified seal.

Newington is about 7 miles north-east of Didcot, in Oxfordshire. Anywhere in OX10, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Across Oxfordshire, 423 places are covered, Newington among them. Our Oxford page has more on work in that area.

Work on service penetrations is covered throughout OX10, whatever the building. If your building is just outside Newington, we cover Great Holcombe (1 mile south), Drayton St Leonard (1 mile west), Brookhampton (1 mile north-west), Stadhampton (1 mile north) and Berrick Salome (2 miles south). A short drive away, we cover Oxford (8 miles north-west), Didcot (7 miles south-west), Abingdon-on-Thames (7 miles west), Thame (8 miles north-east), Wantage (14 miles west) and Henley-on-Thames (13 miles south-east).

What’s near Newington

In Newington, that means premises near The Catherine Wheel pub. Nearby you’ll also find Littlemore Hospital (5.7 miles north-west) and Brightwell Castle (4.3 miles south-west). Not far away are Wittenham Clumps and Wells Farm.

Map of Newington © OpenStreetMap contributors

Your questions answered

Do you take on work at healthcare sites like Littlemore Hospital?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Can you work at a site such as Monument Business Park, by Newington?

Yes. We cover Newington and the area around it, including industrial estates, business parks and retail parks such as Monument Business Park. Send details of the unit and the work through our quote form for a quick quote.

What do you charge?

Every job gets its own fixed quote. For yours, speak to us on 01277 525 020 or use the quote form with a description of the work.

Will fire-rated sealant work on every penetration?

No. Sealant is the right product only where the tested detail says so. Large openings, many plastic pipes and some ducts need collars, wraps, batts or boards, and we’ll tell you when that applies.

Do you seal on top of existing sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

Can the sealant be colour-matched?

It depends on the product specified. Some ranges are wide, others limited, so we’ll confirm the colours available for the specified product with the quote.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.

What sets the cost

A fixed quote reflects the actual work. It takes account of:

  • How much there is to seal
  • Access and working height
  • Which sealant the job calls for
  • Removal of failed or old sealant

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

Sending details for a quote

However big the job, the same details help:

  • Whether the building will be occupied during the work
  • The postcode of the building
  • The asbestos register, for older buildings
  • Any specification or named product

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or send details through our quote form.

How the job changes by surface

Risers and ceiling voids

Service risers and the voids above ceilings are where openings collect. Access to these areas is planned with you in advance.

Small ducts

Small ductwork can sometimes be sealed with sealant where the tested detail includes it. Bigger ducts and fire-resisting ductwork are normally handled with other products.

Diagnose, treat, sign off

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed before we move to the next. For a building around Newington, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. First we confirm the product and tested details named in the specification.
  2. We sort the openings by the detail each one needs.
  3. Old or wrong materials are cut out.
  4. Where the detail needs backing, it goes in at the stated depth.
  5. We gun the sealant in to the specified depth around each service and tool it.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

Before we start on site

  • Point out parking and an unloading spot
  • Send your site hours and access windows
  • Send asbestos survey details if the building is pre-2000

Ask for a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Ask for a quote

Read more

Maintenance after handover

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:

  • Settle who seals which penetrations at the start of a project
  • Have penetrations checked while they can still be seen
  • File the specified details where the next contractor can find them
  • Foam or ordinary sealant is never a fire-seal repair

Allow the manufacturer’s stated cure time before boxing in or decorating. Not every fire-rated product can be painted, and the data sheet says which.

Ask every contractor who works in risers or voids to report openings they create. It costs little and catches breaches early.

Honest limits

Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is any of the following:

  • Signing off or certifying a building’s fire stopping
  • Large openings beyond what any sealant detail covers
  • Writing the fire-stopping specification

Not sure which it is? You can call 01277 525 020 or email drawings and photos and we’ll tell you honestly.

Where we work in Newington

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

Doing it in-house

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Accreditations

Trusted. Accredited. Insured.