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

Construction Mastic in Hempton

Sealant work in Hempton for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, with a fixed quote first.

  • Inconsistent sealant finishes from plot to plot
  • Failed sealant in an existing building being refurbished
  • Cracks opening in caulked internal joints
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Construction mastic across Hempton

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

About our construction mastic in Hempton

Mastic Doctor has been a subcontractor on construction projects for over 20 years. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. To price a package in Hempton, send drawings and the specification through our quote form. We work on brick and block movement joints, internal decorators’ caulk and sanitary and kitchen joints, and the usual reasons a site gets in touch are old sealant on a refurbishment that needs stripping before new work and oversized or tapered gaps around new frames. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Hempton it comes down to the same thing: the right product in a properly prepared joint.

Conversions of older rural buildings near smaller places such as Hempton bring stone, flint, brick and timber up against new glazing. A product that grips an irregular face, with a colour that suits the building’s character, is normally what’s needed.

We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Hempton (OX15)
Region
Oxfordshire
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026

How the job changes by surface

Bathrooms, en suites and washrooms

In bathrooms and washrooms, an anti-mould sanitary silicone goes around every fitting. Joints are cleaned, sealed and tooled neatly, and any bath is loaded with water first where that’s the agreed method.

Kitchens and utility areas

Commercial kitchens often need hygienic or food-safe sealants. Joints are sealed smooth so they’re easy to clean.

What we are called out for in Hempton

Shrinkage and settlement in the first months put new joints under strain. Materials lose construction moisture and shrink. Choosing the right product for each joint reduces that.

It’s worth sending us details if you spot any of the following:

  • Cracks opening in caulked internal joints
  • External joints sealed in damp or cold conditions that are now failing
  • Failed sealant in an existing building being refurbished
  • Perimeter gaps outside the sealant’s range

On a healthcare site such as Horton General Hospital (4.9 miles north of Hempton), new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

What your quote should include

  • Their pre-qualification and accreditations
  • Whether primer will be used where the manufacturer specifies it
  • Their approach to joint depth and backing
  • How they’ll work around occupants

Questions to ask before you appoint anyone

Your questions answered

Is Hempton off your patch?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Do you cover business parks and estates near Hempton, such as Station Yard Industrial Estate?

Yes. Estates, retail parks and business parks around Hempton, Station Yard Industrial Estate among them, are all within reach. Photos and a short description are enough for a first look.

How much does the work cost?

We don’t publish prices, as every site differs. Send photos or drawings and we will price it at a fixed figure.

Do you use the sealant named in the specification?

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.

Do you seal on top of existing sealant?

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

Are you insured?

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

Can you seal external joints in wet or cold weather?

Weather matters for external sealing: the joint needs to be dry and within the product’s temperature range. External work is sequenced with some flexibility.

What sealant work can’t fix

We check first that sealant really is the fix. It isn’t the answer for:

  • Designing joint widths or choosing the specification (that sits with the designer)
  • Faulty frames rather than failed sealant
  • Rework caused by others damaging completed areas

If you are not sure, just speak to us on 01277 525 020 or send photos by email and we will give you a straight answer before you book.

What we seal

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

Owners, agents and contractors

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules.

Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

From enquiry to sign-off

Occupied buildings need a little choreography. 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 Hempton need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. First we take quantities off the drawings and read through the specification.
  2. We return a fixed quote that ties the mastic package to your programme.
  3. You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
  4. Areas are sealed plot by plot or floor by floor as the trades hand them over.
  5. Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
  6. Snags are cleared before handover and completed areas carry our 12-month guarantee.

Getting the site ready

  • Point out any areas we must not close
  • Tell us what induction or permit system the site runs
  • Point out parking and an unloading spot

Getting a fixed quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, call 01277 525 020 or email us.

Get a quick quote

Advice

When to bring in a specialist

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

New build and refits around Hempton

Rainfall across the South East, Hempton included, is lower than in many parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, which is why external dates are agreed with the site manager. At about 63 miles from central London, Hempton is within reach of the capital. Towns within reach of London tend to keep building, from flats to offices and schools, which keeps mastic packages in demand.

New units and refits on sites such as Station Yard Industrial Estate (to the north-east of Hempton) need their panel and perimeter joints sealed to the specification. Hotel extensions and refits, at places such as The Holcombe Hotel, 1.3 miles east of Hempton, typically run between busy periods, so the sealing is squeezed into short windows.

Hempton is about 6 miles south of Banbury, in Oxfordshire. We cover commercial sites throughout Hempton, for single jobs and planned programmes alike. Across Oxfordshire, 423 places are covered, Hempton among them. Sites around Oxford have their own page, about 17 miles away.

Work on mastic packages is covered throughout OX15, for business premises of every kind. Buildings on Hempton Road, The Lane and St John's Way are within our area for mastic packages. Close to Hempton, our area also takes in Barford St Michael (1 mile north-west), Barford St John (1 mile north-west), Deddington (1 mile east), Nether Worton (2 miles south-west) and Dane Hill (2 miles south-east). Nearby towns on our patch include Banbury (6 miles north), Bicester (10 miles south-east), Witney (15 miles south-west), Kidlington (12 miles south), Bure Park (10 miles south-east) and Chipping Norton (9 miles west).

What’s near Hempton

We work on buildings around George Inn and the streets around them. The nearest railway station is Kings Sutton station, roughly 4 miles north-east. Other landmarks nearby include Bloxham Village Museum (2.5 miles north) and Deddington Castle (1.6 miles east). Not far away are Crouch Hill.

Map of Hempton © OpenStreetMap contributors
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