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

Shellingford construction mastic

Mastic packages for new-build and refurbishment projects in Shellingford and across Oxfordshire. CHAS accredited and fully insured, with a 12-month guarantee.

  • A mastic package split between trades with no clear owner
  • Frame gaps too wide for sealant alone
  • Early adhesion failures on new external joints
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
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Construction mastic in Shellingford

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

Your questions answered

Would you work within a site like Longworth Hospital?

Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is Stanford in the Vale Business Park, near Shellingford, within your area?

Yes, sites like Stanford in the Vale Business Park are within our area, along with the rest of Shellingford. Send details of the unit and the work through our quote form for a quick quote.

Are you fully insured?

Yes. Our insurance certificate can be sent alongside the quote.

Will you stick to the specified products?

The specification decides the product and flag anything that doesn’t look right for the joint. Specifications often reference BS EN 15651 or BS 6213.

Can you clear a mastic snag list before handover?

Yes. We can work through a mastic snag list area by area before handover and damaged joints are redone properly.

Does the weather affect the work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

Do your applicators hold CSCS cards?

Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. Tell us what site paperwork you need and we will confirm with the quote.

How we handle construction mastic in Shellingford

External mastic depends on the weather in a way most internal trades don’t. Cold or damp mornings, frost and condensation on frames can all hold external sealing up, so we plan elevations with the forecast and the programme in mind. Internal areas can typically carry on while the outside waits. If you have different trades sealing to different standards and external joints sealed in damp or cold conditions that are now failing, we can put it right, on floor and skirting junctions, window and door perimeters and cladding and panel joints alike. A single leaking joint is often how a building in Shellingford first comes to us: we look at the rest while we’re there and tell you what we find.

Sites around smaller places like Shellingford can be a fair drive from suppliers, so we come with everything the package needs. Send drawings or photographs and the programme and we’ll quote to suit.

We stand by our work with a 12-month guarantee. That covers our preparation and application, and if something we did falls short, we return to it.

Location
Shellingford (SN7)
Region
Oxfordshire
Cover
12 months on every job
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

When to call us in Shellingford

Three-sided adhesion is a frequent fault on new work. Fixed to three faces, the sealant rips the first time the joint opens so we set the depth properly before sealing.

What tends to prompt an enquiry:

  • Missed perimeter joints on a new elevation
  • Inconsistent sealant finishes from plot to plot
  • Frame gaps too wide for sealant alone
  • External joints sealed in damp or cold conditions that are now failing

On a healthcare site such as Longworth Hospital, which lies north-west of Shellingford, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

Questions to ask before you book

  • How joint depth will be controlled
  • The named product and why it was chosen
  • Their pre-qualification and accreditations
  • Proof of insurance

Our contractor checklist

Building and refurbishing in Shellingford

At about 63 miles from central London, Shellingford is within reach of the capital. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes. The South East is one of the drier parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so external mastic is timed for workable conditions and agreed with the site manager.

For contractors refurbishing units at places like Stanford in the Vale Business Park, 0.8 miles east of Shellingford, the mastic covers cladding panels, roller-door and window perimeters. School extensions, at buildings such as Shellingford Church of England (Voluntary Aided) School, usually run to the summer holidays, mastic included.

Shellingford is about 6 miles north-west of Wantage, in Oxfordshire. If you are looking for construction mastic in Shellingford, we can help, as we do across Oxfordshire. We work across 423 places in Oxfordshire, from busy centres to rural villages. Oxford is covered too, some 15 miles away.

If you need construction mastic in SN7, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Church Street and Fernham Road, and sites on any of them can send details for a fixed quote. Just outside Shellingford, we also work in Stanford in the Vale (1 mile east), Hatford (2 miles north-east), Baulking (2 miles south), Bow (2 miles east) and Fernham (2 miles south-west). Nearby towns on our patch include Oxford (15 miles north-east), Didcot (13 miles east), Abingdon-on-Thames (11 miles east), Witney (10 miles north), Carterton (9 miles north) and Wantage (6 miles south-east).

Landmarks near Shellingford

Recent enquiries here include premises near Faringdon Community College, among other places. Nearby you’ll also find Faringdon Castle (1.9 miles north-west) and Faringdon Museum (2.2 miles north-west). For a walk, there’s Badbury Hill.

Map of Shellingford © OpenStreetMap contributors

How the quote is worked out

What shapes the price:

  • Access and working height
  • How much there is to seal
  • The product specified
  • Site requirements such as inductions and permits

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Sending details for a quote

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • Rough lengths or quantities, or drawings if you have them
  • Anything awkward about access or site hours
  • What the building is and how it’s used
  • Whether an asbestos survey exists

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. For a chat about it beforehand, call 01277 525 020 or send details through our quote form.

How the job changes by surface

Internal decorators’ caulk

Caulk is easy to apply badly. A neat, consistent caulk line makes the decorators’ job quicker and keeps the snag list down.

Fire-rated sealant where specified

Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested detail. Fire stopping design belongs to the designer and building control; we work to the specification and the manufacturer’s installation guidance.

What sealant work can’t fix

Sealant solves a lot, but not everything, and we’re upfront when that’s the case. These need a different solution:

  • Joints damaged after sign-off by following trades
  • Faulty frames rather than failed sealant
  • Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)

If in doubt, call 01277 525 020 or email the details over and we’ll say what we think.

Joints and surfaces we work on

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

How a job runs

Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us. If others near Shellingford need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. We start with the drawings, specification and programme.
  2. Quantities are measured and a fixed price returned.
  3. We agree with the site team which areas come first.
  4. Plots or floors are sealed as they’re handed over.
  5. Every joint is cleaned, set to depth and sealed with the specified product.
  6. After snagging, the work is handed over under our 12-month guarantee.

Preparing the site

  • Send asbestos survey details if the building is pre-2000
  • Share your working hours and any access restrictions
  • Send any specification or drawings in advance

Ask for a quote

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, call 01277 525 020 or send photos by email.

Get a price

Related advice

Maintenance after handover

Once the work is signed off, these steps help:

  • Record the products used in the O&M file
  • Brief the final clean team to avoid blades near sealant
  • Keep finished joints away from paint, plaster and scrapers
  • Stick to the specified sealant rather than a generic substitute

A new structure shifts as it loses construction moisture. Flexible sealants in the right joints handle normal movement, but caulk in a joint that moves more than expected may crack. We can advise if a joint needs a different product.

A missed perimeter seal on one window can wet the reveal and the plaster inside. On a new building that means remedial work after decorating and possibly a delayed handover. Checking perimeters before internal finishes go on avoids it.

Accreditations

Trusted. Accredited. Insured.