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

Construction Mastic in Fencott

Mastic packages for new-build and refurbishment projects across Fencott, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Different trades sealing to different standards
  • New external sealant already peeling away
  • Caulk cracking where joints are moving more than expected
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Construction mastic near Fencott

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

Construction mastic in Fencott

Most of the packages we price run well beyond frames: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. One contractor for all of it keeps the responsibility in one place and gives you a consistent finish across the job. If you are dealing with a long mastic snag list close to completion and oversized or tapered gaps around new frames, we can help. A single leaking joint is often how a building in Fencott first comes to us: we look at the rest while we are there and tell you what we find.

In the countryside around places like Fencott, conversion schemes put new frames into old stone, flint, brick or timber. A product that grips an irregular face, with a colour that suits the building’s character, is normally what’s needed.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

Location
Fencott (OX5)
Wider area
Oxfordshire
Cover
12 months on every job
Quote
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

For managing agents and facilities managers

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.

CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

What sealant work can’t fix

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Oversized gaps that need packing or adjustment by others
  • Deciding which fire-stopping product a penetration needs
  • Glazing units that are cracked or misted

If in doubt, ring 01277 525 020 or email drawings and photos and we’ll say what we think.

What we seal

  • Sanitary and kitchen joints
  • Brick and block movement joints
  • Window and door perimeters
  • Floor and skirting junctions
  • Internal decorators’ caulk
  • Cladding and panel joints

FAQs: Fencott

Can you keep pace with our programme in Fencott?

Yes. The mastic is planned around your key stages. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Is Fencott too small for you to travel to?

No. Small places get the same service as large ones. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

How much does the work cost?

That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote and we will price it properly.

Can you follow the specification on our project?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.

What does a mastic package typically include?

External perimeters and movement joints, internal caulking where specified, sanitary and kitchen joints, plus snagging.

Do you do fire-rated sealing on new builds?

Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. The design and sign-off belong to the designer, fire engineer or building control.

Are you insured?

Yes. We’re fully insured, including public liability cover.

What sets the cost

To price the job, we consider:

  • The site’s rules and procedures
  • How much existing material needs removing
  • Phasing around occupants
  • Any access equipment needed

There’s no price list, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.

What we need to price the job

Whether it’s one area or a whole building, the same details help:

  • A wide shot and a close-up of the area
  • The site address and postcode
  • Drawings or a marked-up plan, if available
  • Anything awkward about access or site hours

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.

On site: what to expect

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. Jobs in and around smaller places like Fencott are normally planned as a single visit, so photographs and measurements up front really help. That way the right products come on the day.

  1. We price from the drawings, specification and programme you send.
  2. We return a fixed quote that ties the mastic package to your programme.
  3. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. We seal each plot or floor as it’s released to us.
  5. Each joint is prepared, backed to depth and sealed in the product the specification names.
  6. Snags are cleared before handover and completed areas carry our 12-month guarantee.

What we need from you

  • Point out parking and an unloading spot
  • Tell us which areas need to stay in use
  • Let us know about inductions and permits

Request a quote

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or speak to us on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Get a quick quote

Related advice

After the work

Your facilities or cleaning team can help the joints last. Share these points with them:

  • Stick to the specified sealant rather than a generic substitute
  • Release areas for mastic once other trades have finished in them
  • Share drawings and the specification as soon as possible
  • Ask installers to correct oversized gaps first

Our 12-month guarantee covers the workmanship from sign-off. Damage by others isn’t a workmanship fault which is why protection after sealing matters.

External joints sealed in poor weather are a common cause of early failure. Holding off until conditions suit avoids callbacks.

Construction mastic around Fencott: what changes locally

Fencott lies roughly 52 miles out from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, and each scheme needs its mastic sealed to programme. Rainfall across the South East, Fencott included, is lower than in many parts of the UK. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so the external programme keeps a little slack.

Hospital estates such as Bicester Community Hospital, 3.8 miles north of Fencott, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan. For contractors at a school such as Charlton-on-Otmoor Church of England Primary School, sealing has to be finished before term starts. Historic houses such as Boarstall Tower (3.2 miles south-east of Fencott) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.

Fencott is about 4 miles south of Bicester, in Oxfordshire. We cover Fencott and the rest of Oxfordshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Fencott is one of 423 places we cover in Oxfordshire for mastic packages. We also cover Oxford, around 7 miles from Fencott.

Anyone looking for construction mastic in OX5 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your building is just outside Fencott, we cover Murcott (1 mile south-east), Charlton-on-Otmoor (1 mile west), Merton (1 mile north), Upper Arncott (2 miles east) and Wendlebury (2 miles north-west). Nearby towns on our patch include Oxford (7 miles south-west), Bicester (4 miles north), Abingdon-on-Thames (12 miles south-west), Witney (14 miles west), Thame (11 miles south-east) and Kidlington (5 miles west).

Near you in Fencott

In Fencott, that means premises near The Crown pub. Fencott’s nearest station is Islip station, about 3.2 miles west. Well-known places in the area include Bicester Avenue (3.2 miles north) and Bicester Community Hospital (3.8 miles north). Green spaces nearby include Otmoor RSPB reserve and Graven Hill.

Map of Fencott © OpenStreetMap contributors
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