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

Mastic sealing for building owners and managing agents in Dunsfold, Surrey

Mastic sealing for building owners, managing agents and housing associations in Dunsfold and across Surrey. CHAS accredited and fully insured, with a 12-month guarantee.

  • Cracked, hardened mastic round windows on a block
  • Repeated reactive repairs to the same buildings
  • The same joint failures repeated across a portfolio
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing for Dunsfold sites

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

Mastic sealing in Dunsfold, done properly

Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint, and colours are confirmed for whichever product is used. We work on communal entrances and stairwells, balcony and threshold joints and communal kitchens and washrooms, and the usual reasons a site gets in touch are the same joint failures repeated across a portfolio and damp patches beside frames. Most enquiries from Dunsfold start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

In and around smaller places like Dunsfold, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Frame and wall-joint mastic on all of them ages and hardens.

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Place
Dunsfold (GU8)
Wider area
Surrey
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Dunsfold: questions and answers

Do you work for managing agents with blocks near Witley station?

Yes. Blocks of any size are within what we do. We work to your notice and access arrangements.

Is Dunsfold off your patch?

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

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

Is mastic sealing guaranteed?

Our workmanship carries a 12-month guarantee, backed by public liability insurance.

Will residents or tenants be disturbed?

We plan around people living or working in the building. We agree the programme so you can notify occupiers and communal access is kept open.

Can you take on resealing for a block portfolio?

Yes, that’s exactly who this service is for. We work through buildings in a planned order with dates agreed in advance.

Can you reseal a whole block or estate?

Yes, planned programmes suit estates and portfolios. You get a fixed quote per building or for the whole job.

What we can’t put right

Being straight saves everyone time. Fresh joints won’t solve:

  • Water coming in from the roof or rainwater goods
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
  • Leaks through the frame itself rather than the perimeter

Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we’ll tell you honestly before you book.

What we seal

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

What we are called out for in Dunsfold

Frames, panels and masonry expand and contract through the year, and the sealant takes up that movement. A joint that was too narrow, too thin or the wrong product can’t cope and fails early.

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

  • Water getting in round frames after rain
  • Cracked, hardened mastic round windows on a block
  • Old repairs sealed over failed mastic
  • Communal area joints that look neglected

Older community buildings, Church of St Mary and All Saints among them, often have frames of mixed ages whose mastic varies.

Before you book anyone

  • Whether old or failed sealant will be cut out, not overlaid
  • What level of public liability insurance do they hold?
  • What the guarantee covers, and for how long
  • Will RAMS and insurance details be available?

Choosing a commercial sealant contractor

Aftercare for building managers

For the best life from the joints:

  • Have the asbestos survey to hand for older buildings
  • Avoid piecemeal callouts where you can
  • Ask residents or tenants to report leaks and draughts early
  • Look at the sunniest and most exposed elevations first

Include sealant in planned building inspections. Check for splits, open joints, brittle mastic and lifting edges, and note the building and elevation.

Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings so spending is spread.

Mastic sealing around Dunsfold: how the place shapes the job

The South East is one of the drier parts of the UK. Outside work still depends on dry joints, and the sunniest, most exposed sides of a building usually need attention first. Central London is about 33 miles from Dunsfold. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres, and window and balcony mastic on them tends to age at the same rate.

If you look after a block within reach of Witley station (3.8 miles west of Dunsfold), frame and balcony mastic can be renewed on one programme. If you own or manage units on a site such as Littlemead Industrial Estate (3 miles north-east of Dunsfold), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.

Dunsfold is about 9 miles south of Guildford, in Surrey. We send applicators to Dunsfold for mastic joints, handled exactly as we handle every other area. Dunsfold is one of 379 places we cover in Surrey. For work in that direction, see our Brighton page (27 miles or so).

Commercial sites across GU8 are covered. If your site is on Binhams Meadow, Dunsfold Common Road and Nugent Close or close by, we can quote for mastic joints. We also cover Loxhill (1 mile north), Hascombe (2 miles north), Alfold Crossways (2 miles south-east), Elmbridge Village (2 miles north-east) and Grafham (3 miles north). Further afield, our area takes in Guildford (9 miles north), Woking (14 miles north), Farnham (12 miles north-west), Dorking (13 miles north-east), Frimley (15 miles north-west) and Haslemere (7 miles west).

Local landmarks in Dunsfold

In Dunsfold, that means premises near Fir Tree Copse and The Sun Inn Public House. The nearest railway station is Witley station, about 3.8 miles west. Well-known places in the area include Milford Hospital (4.3 miles north-west). Open spaces near Dunsfold include Lower Lake and Hydon's Ball.

Map of Dunsfold © OpenStreetMap contributors

From enquiry to sign-off

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. For work around Dunsfold, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. We check the asbestos register for older buildings and look at the joints.
  2. A fixed quote covers the joints, products and order of work.
  3. We strip out the old sealant.
  4. Joint faces are cleaned, backed and resealed.
  5. Buildings are completed in turn.

What we need from you

  • Share the asbestos register for older buildings
  • Explain the parking and delivery arrangements
  • Point out any areas we must not close

Getting a fixed quote

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Advice

Leave it or put it right?

Failed perimeter mastic lets cold air in around frames and the windows normally get the blame. In many cases, new perimeter sealant deals with it where the frames themselves are sound. Older rural buildings around Dunsfold move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a fixed quote once you have the details.

Why appoint us

  • Matching to RAL references, product permitting
  • Our applicators hold CSCS cards
  • Workmanship guaranteed for 12 months
  • One phone line for London, the South East and Scotland

Read what affects the cost or our accreditations and insurance.

How the job changes by surface

Tenement and older buildings

Natural stone can be marked by the wrong sealant and we choose accordingly.

Communal areas

Entrance doors, screens and corridor junctions in communal areas all have sealant joints. Fresh joints make shared areas look looked after.

Accreditations

Trusted. Accredited. Insured.