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

Mastic sealant contractors in Farnham Common

We carry out mastic sealing for building owners, managing agents and housing associations in Farnham Common and the surrounding area. Send details for a fixed quote.

  • A mix of products and colours from past repairs
  • Damp patches beside frames
  • Brittle perimeter mastic across a building
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing near Farnham Common

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

About our mastic sealing in Farnham Common

Before work starts, most agents and landlords want the documents in order. 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. Site teams most often ask us about draught complaints from residents or tenants and brittle perimeter mastic across a building, across balcony and threshold joints, communal kitchens and washrooms and shopfronts below residential blocks. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Farnham Common is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

For buildings around smaller places like Farnham Common, we group work so one trip covers it. Photos of each elevation help us quote accurately.

Every job we finish is backed by a 12-month workmanship guarantee, in Farnham Common as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Farnham Common (SL2)
Wider area
Buckinghamshire
Cover
A 12-month guarantee
Quotes
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026

What we can’t put right

Our job is the joint, not everything around it. Sealant alone won’t deal with:

  • Broken glass or failed sealed units
  • Materials that need asbestos testing before work
  • Leaks from above rather than through a joint

If you’re not sure, just call 01277 525 020 or email a schedule or drawings and we’ll give you a straight answer before you book.

What we seal

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

Common problems we fix in Farnham Common

We often find joints filled solid with no backing rod, so the mastic is glued to the joint bottom too. It can’t stretch properly and splits as the building moves.

Things that usually lead to an enquiry:

  • Window mastic that has split and shrunk
  • Worn sealant at communal door frames
  • Leaks at window and door perimeters
  • Estate-wide sealant that is simply worn out

For owners of several units at places like Slough Trading Estate (2.8 miles south of Farnham Common), one programme can deal with frame and external mastic across the lot.

Questions to ask before you book

  • Is the sealant right for the movement and the substrate?
  • Their approach to joint depth and backing
  • How long is the guarantee, and what does it include?
  • Whether their applicators hold CSCS cards

Our contractor checklist

Mastic sealing around Farnham Common: how the place shapes the job

Rainfall across the South East, Farnham Common included, is lower than in many parts of the UK. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first. Farnham Common lies roughly 23 miles out from central London. Within reach of London, blocks run by agents and associations are common around stations.

Trustees of buildings like St John the Evangelist can bring frame and external mastic into a planned maintenance list. Older buildings near Farnham Common, from historic houses such as Cliveden, 3.3 miles west of Farnham Common, to more modest stock, need compatible products when frames are resealed.

Farnham Common is about 3 miles north of Slough, in Buckinghamshire. We cover Farnham Common and the rest of Buckinghamshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Buckinghamshire, 308 places are covered, Farnham Common among them. There’s a separate page for Reading, roughly 17 miles from Farnham Common.

Postcode districts covered here: SL2. Among the streets we cover are Temple Way, Common Wood and Badgers Wood, and sites on any of them can send details for a fixed quote. Just outside Farnham Common, we also work in Egypt (1 mile north-west), East Burnham (1 mile south-west), Hedgerley (1 mile north-east), Farnham Royal (1 mile south) and Littleworth Corner (2 miles west). Nearby towns on our patch include High Wycombe (8 miles north-west), Chesham (11 miles north), Marlow (7 miles west), Amersham (8 miles north), Beaconsfield (4 miles north-west) and Chalfont St Peter (4 miles north-east).

Near you in Farnham Common

Recent enquiries here include premises near Caldicott School, Khalsa Secondary Academy and Cocksherd Wood, among other places. For rail, the closest station is Burnham station, roughly 2.9 miles south-west of the centre. Nearby you’ll also find Wexham Park Hospital (2.4 miles south-east). Not far away are Burnham Beeches and Taplow Lake.

Map of Farnham Common © OpenStreetMap contributors

What sets the cost

What shapes the price:

  • Whether old sealant has to be cut out first
  • Access and working height
  • Site requirements such as inductions and permits
  • Phasing around occupants

Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

What we need to price the job

A good diagnosis starts with the right details. Let us know:

  • Whether the building will be occupied during the work
  • The postcode of the building
  • Photos of the joints, close up and from further back
  • Approximate linear metres or a joint schedule

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, call the office on 01277 525 020 or email the details over.

On site: what to expect

Tell us your site hours and access windows and we will plan around them. 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 Farnham Common are normally planned as a single visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.

  1. First comes a look at the joints and, for older buildings, the asbestos records.
  2. The products and programme are set out in a fixed quote.
  3. Failed mastic is removed completely.
  4. Joint faces are cleaned, backed and resealed.
  5. Buildings are completed in turn.

What we need from you

  • Warn occupants and staff about the work
  • Point out any areas we must not close
  • Confirm the product named in the specification

Getting a fixed quote

For a fixed quote, call the office on 01277 525 020 or email drawings and photos with the site address and an outline of the work. Our quote form is another easy route.

Get a quick quote

Read more

How the job changes by surface

Communal areas

Communal areas stay in use while we work. We work in sections so access is never blocked.

Estate-wide resealing programmes

Consistent products and colours across an estate make future maintenance simpler.

Questions about Farnham Common

We manage a building near Burnham station. Can you help?

Yes, and several blocks can go on one quote. Send the address, photographs of the elevations and your access arrangements, and we will give a fixed quote.

Will you take on work at estates like Slough Trading Estate, close to Farnham Common?

Yes. We cover Farnham Common and the area around it, including industrial estates, business parks and retail parks such as Slough Trading Estate. A few photos and the unit address let us price the work.

Can people stay in the building while you reseal?

The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told and communal access is kept open.

How long does a typical visit take?

It depends on the scope, though a typical visit normally takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

What if the old mastic contains asbestos?

In older buildings, old mastic can contain asbestos. We ask for the asbestos register or survey before work starts, and if it’s suspected, work stops until it’s tested.

Is mastic sealing guaranteed?

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

For managing agents and facilities managers

Building owners and managing agents use us on sealant work across single buildings or whole portfolios. One quote can cover more than one site, which keeps the paperwork simple.

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.

Accreditations

Trusted. Accredited. Insured.