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

Mastic sealant contractors in Farmoor

Mastic sealing for building owners, managing agents and housing associations in Farmoor and across Oxfordshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Cracked, hardened mastic round windows on a block
  • Water getting in round frames after rain
  • Old repairs sealed over failed mastic
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
Constructionline member
£5m public liability

Mastic sealing across Farmoor

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

Mastic sealing around Farmoor: how the place shapes the job

Central London is about 57 miles from Farmoor. Within reach of London, blocks run by agents and associations are common around stations; their frame mastic often ages block-wide. Rainfall across the South East, Farmoor included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first.

Student blocks close to universities like Azad University in Oxford, less than half a mile to the north-west of Farmoor, are easiest to work on between tenancies. For owners of several units at places like Oakfields Industrial Estate, 1.6 miles north-west of Farmoor, one programme can deal with frame and external mastic across the lot. Trustees of buildings like St Mary's Church can bring frame and external mastic into a planned maintenance list.

Farmoor is about 5 miles west of Oxford, in Oxfordshire. Across the OX2 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Across Oxfordshire, 423 places are covered, Farmoor among them.

If you need mastic sealing in OX2, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on Mayfield Road, Oxford Road and Meadow Close and the roads nearby. Close to Farmoor, our area also takes in Filchampstead (1 mile south), Swinford (1 mile north-west), Dean Court (2 miles south-east), Eynsham (2 miles north-west) and Wytham (2 miles north-east). Bigger towns within reach include Oxford (5 miles east), Didcot (11 miles south-east), Bicester (13 miles north-east), Abingdon-on-Thames (6 miles south-east), Witney (6 miles west) and Carterton (10 miles west).

Around Farmoor

Farmoor’s nearest station is Oxford station, about 3.4 miles east. Other landmarks nearby include Oxford University Press Museum (3.6 miles east) and Radcliffe Infirmary (3.7 miles east). Open spaces near Farmoor include Hook Meadow and The Trap Grounds and Cumnor Hill.

Map of Farmoor © OpenStreetMap contributors

Mastic sealing in Farmoor, done properly

Managing agents and housing associations usually need paperwork before anyone starts. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. If you’re dealing with complaints coming in block by block and failed external movement joints, we can help. For commercial sealant work in Farmoor, you deal with one contact from quote to sign-off, whether it’s one building or several.

Rural conversions near places like Farmoor often set modern frames into older stone, flint or brick. The mastic needs to suit an irregular masonry face and the look of the building.

We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and we come back if anything isn’t right.

Where
Farmoor (OX2)
Wider area
Oxfordshire
Cover
12 months on every job
Price
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

When something else is needed

Honesty saves time and money. New sealant won’t cure:

  • Masonry that has broken away beside the joint
  • Leaks through the frame itself rather than the perimeter
  • Leaks from above rather than through a joint

If in doubt, ring 01277 525 020 or email the details over and we will say what we think.

Where we work in Farmoor

  • Communal entrances and stairwells
  • Balcony and threshold joints
  • Communal kitchens and washrooms
  • Window and door perimeters on blocks
  • External wall and movement joints
  • Shopfronts below residential blocks

How a job runs

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. Smaller jobs around Farmoor can be grouped with others nearby, which keeps travel down. You’ll have a fixed quote before work starts.

  1. Each block or building is walked and the failed joints recorded with the likely cause.
  2. We send a fixed quote that sets out the joints, the products and the programme.
  3. The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. Failed mastic is removed and the faces taken back to sound, dry material.
  5. Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Before we start on site

  • Arrange parking or a loading space
  • Tell us which areas need to stay in use
  • For older buildings, check the asbestos register before work

Quotes

Need a figure for a tender or a budget? We will quote against your scope and drawings you can plan around. If you have questions first, phone 01277 525 020 or email drawings and photos.

Get a quick quote

Advice

Common questions from Farmoor clients

Does your area include sites such as Oakfields Industrial Estate, near Farmoor?

Yes, sites like Oakfields Industrial Estate are within our area, along with the rest of Farmoor. Send details of the unit and the work through our quote form for a quick quote.

Will you take on a block within reach of Oxford station?

Yes, and several blocks can go on one quote. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.

Can weather delay the job?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.

Can you reseal a whole block or estate?

Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.

How do you reach windows on upper floors?

We talk through access for each building when we quote. Tell us the number of storeys and whether scaffold or other access is planned and we will confirm the approach in the quote.

How long before the joints can be used?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.

Will residents or tenants be disturbed?

Residents and tenants carry on as normal. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.

What happens if it’s left?

Sealing over failed mastic looks tidy for a while. It doesn’t bond and normally fails within a short time. Full removal and proper preparation is what lasts. Around Farmoor, it’s better to renew all the failing joints at once. Send photos of each area and we’ll quote for the lot.

Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

Why appoint us

  • Work carried out by CSCS-carded applicators
  • Joints cleaned back to sound surfaces
  • Specification-led, product-correct work
  • 12 months’ guarantee on every job

See our cost guide or how we’re accredited.

For managing agents and facilities managers

We work for building owners and managing agents on everything from one building to a spread of sites. Several sites can go on one quote, which keeps the paperwork simple.

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

How the quote is worked out

A fixed quote reflects the actual work. It allows for:

  • How much existing material needs removing
  • How much there is to seal
  • The site’s rules and procedures
  • Access and working height

A quote for mastic joints depends on quantities, condition and access, and any specification that applies. Call for a quote.

What we need to price the job

To price the job accurately, we need to understand the site. Send us:

  • Drawings or a marked-up plan, if available
  • Specification clauses that apply
  • Whether the building will be occupied during the work
  • Where the site is, with the postcode

For a fixed quote, speak to us on 01277 525 020 or email us. You can also send details through our quote form.

Aftercare for building managers

Regular inspection catches problems early. In particular:

  • Encourage occupiers to report problems at frames
  • Start inspections with the most exposed faces
  • Keep a record of when each building was resealed
  • Check sealant joints during planned building inspections

If paintable sealant was used, decoration can follow once it has cured. Non-paintable silicone shouldn’t be painted over.

Leaks at window perimeters spoil finishes and can affect frames. Resealing early keeps the job small.

Accreditations

Trusted. Accredited. Insured.