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

Ascott-under-Wychwood fire stopping

Fire-rated and intumescent sealing of service penetrations and linear gaps in Ascott-under-Wychwood and across Oxfordshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Hidden openings found during inspections
  • Open linear gaps along the top of fire-resisting walls
  • Seals that don’t match their tested detail
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Need fire stopping in Ascott-under-Wychwood?

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

What sealant work can’t fix

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:

  • Approving the work on behalf of building control
  • Plastic pipes whose detail calls for a collar or wrap
  • Designing or specifying fire stopping, which sits with the designer or fire engineer

If in doubt, call the office on 01277 525 020 or email drawings and photos and we’ll say what we think.

Joints and surfaces we work on

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

Fire stopping in Ascott-under-Wychwood

The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints, with results classified under BS EN 13501-2. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. If you have damaged fire seals in risers and voids and snag lists that include open service penetrations, we can put it right. Searching for sealant specialists in Ascott-under-Wychwood? We’ve been sealing commercial buildings since 2005.

Smaller places such as Ascott-under-Wychwood still have buildings with fire-resisting walls and floors: schools, halls, care homes and commercial conversions. If sealant is what the specification names, we install it around the services exactly as the maker’s detail sets out.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Ascott-under-Wychwood (OX7)
Region
Oxfordshire
Cover
12 months on our workmanship
Price
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

Diagnose, treat, sign off

We follow your site rules from the start: signing in, inductions and any permit to work. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact. Jobs in and around smaller places like Ascott-under-Wychwood are typically planned as a single visit, so photos and measurements up front really help. That way the right products come on the day.

  1. First we go through the drawings, schedule or specification for the seals and raise any questions before we price.
  2. Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
  3. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
  6. Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.

Getting the site ready

  • Let us know about inductions and permits
  • Make sure the joints can be reached
  • Tell us which areas need to stay in use

Get a fixed quote

Send us photos, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Get a price

Read more

When to call us in Ascott-under-Wychwood

Fire stopping can get squeezed at the end of a programme, or done by whoever is on site. That is how unsuitable products and improvised details end up in compartment walls and later need putting right.

What tends to prompt an enquiry:

  • Fire stopping installed outside its tested range
  • Fire seals cut back for extra cables and never reinstated
  • Open linear gaps along the top of fire-resisting walls
  • Builders’ foam or ordinary silicone in compartment walls

Hotels such as Shaven Crown Hotel (to the west of Ascott-under-Wychwood) rely on fire-resisting walls between bedrooms and corridors, and refits that add services leave penetrations to seal where fire-rated sealant is specified.

Questions to ask before you book

  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How the joint faces will be prepared and primed
  • How they’ll work around occupants
  • What site paperwork they can supply

Our contractor checklist

FAQs: Ascott-under-Wychwood

Does your area include sites such as Wychwood Business Centre, near Ascott-under-Wychwood?

Yes. Estates, retail parks and business parks around Ascott-under-Wychwood, Wychwood Business Centre among them, are all within reach. Photos and a short description are enough for a first look.

Can you seal around new services in a hotel near Ascott-under-Wychwood?

Yes, where the specification calls for fire-rated sealant. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we will tell you if the detail calls for a collar, wrap or batt instead.

Do you work in Ascott-under-Wychwood?

Yes. Ascott-under-Wychwood falls within our area, and the simplest way to start is to speak to us on 01277 525 020 or email us.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

Do your applicators hold CSCS cards?

Yes. Our applicators hold CSCS cards, which many sites require.

Will you quote for a small job?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

Can one quote cover more than one building?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

Fire-rated sealing for Ascott-under-Wychwood buildings

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. Ascott-under-Wychwood lies roughly 68 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls.

Halls and meeting rooms at places like Church of the Holy Trinity sometimes gain new services, and any compartment wall crossed needs the specified seal. Office fit-outs on sites such as Wychwood Business Centre (to the west of Ascott-under-Wychwood) add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.

Ascott-under-Wychwood is about 6 miles north-west of Witney, in Oxfordshire. If you’re looking for fire stopping in Ascott-under-Wychwood, we can help. Our Oxfordshire coverage takes in 423 places, from busy centres to rural villages. Sites around Oxford have their own page, about 16 miles away.

Work on service penetrations is covered throughout OX7, whatever the building. For a building on High Street, The Green and Church Close or nearby, send details and we will quote for service penetrations. Just outside Ascott-under-Wychwood, we also work in Ascott Earl (1 mile west), Ascott d'Oyley (1 mile south-east), Chilson (1 mile north-east), Shipton-under-Wychwood (1 mile west) and Lyneham (2 miles north-west). Further afield, our area takes in Witney (6 miles south-east), Carterton (7 miles south), Faringdon (15 miles south), Kidlington (12 miles east), Chipping Norton (5 miles north) and St John Street area (15 miles south-east).

Near you in Ascott-under-Wychwood

There’s a railway station in Ascott-under-Wychwood itself: Ascott-Under-Wychwood station. The countryside around Ascott-under-Wychwood includes Blenheim Farm.

Map of Ascott-under-Wychwood © OpenStreetMap contributors

Keeping the joints sound

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Foam or ordinary sealant is never a fire-seal repair
  • Look above ceilings when tiles are lifted for other jobs
  • Have penetrations checked while they can still be seen
  • Ask the designer to confirm details early on refits

Don’t patch a fire-rated seal with anything outside its tested detail. Repairs need the same product and detail as the original unless the designer specifies otherwise.

The simplest way to keep compartment walls intact is to plan fire stopping into every job that crosses them. That way the opening is sealed while the trade and access are still there, not months later.

Why it’s worth doing now in Ascott-under-Wychwood

Open service penetrations matter on ordinary days, not just in a fire: they also carry noise, draughts and smells between rooms. Sealing them to the specified detail deals with the fire risk first. One visit to deal with every failing joint makes more sense than several trips to a place like Ascott-under-Wychwood, rather than one at a time. Send photos of each area and we will quote for the lot.

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we will put a fixed figure on it.

Why choose Mastic Doctor in Ascott-under-Wychwood

  • One number for every site we cover
  • Sealing commercial buildings since 2005
  • A fixed quote before work starts
  • CSCS-carded applicators

Read our cost guide or our accreditations.

When to bring in a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.

Accreditations

Trusted. Accredited. Insured.