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

Mastic Sealing in Farnham Royal

Sealant work in Farnham Royal for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.

  • Damp patches beside frames
  • Window mastic that has split and shrunk
  • Failed external movement joints
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing for Farnham Royal sites

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

Mastic sealing for commercial buildings in Farnham Royal

For over 20 years we have resealed joints for owners, agents and landlords. Every applicator holds a CSCS card, and the work is backed by public liability insurance. Resealed mastic joints in Farnham Royal carry our 12-month guarantee. We work on balcony and threshold joints, external wall and movement joints and communal entrances and stairwells, and the failures we are asked to look at most are movement joints with sealant missing and occupiers reporting cold air round windows. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Farnham Royal is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Rural conversions near places like Farnham Royal often set modern frames into older stone, flint or brick. Perimeter mastic there has to grip an uneven face and suit the building’s character.

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

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Farnham Royal (SL2)
Wider area
Buckinghamshire
Guarantee
A 12-month guarantee
Quotes
A fixed quote before we start
Phone
01277 525 020
Last updated
3 November 2026

Our process

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 Farnham Royal, we aim to finish in one visit, so photos and measurements up front really help. That way the right products come on the day.

  1. First we look at the mastic on each building and note what needs replacing.
  2. A fixed quote follows, split by block or building if that suits you.
  3. Dates, areas and access are agreed so residents or tenants can be told in advance.
  4. Old sealant is stripped and each face prepared back to firm material.
  5. Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Getting the site ready

  • Clear stock, furniture or equipment away from the joints
  • Have the specification and drawings to hand
  • Share the asbestos register for older buildings

Quotes

Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings you can plan around. If you have questions first, speak to us on 01277 525 020 or send photos by email.

Get a price

Related advice

FAQs: Farnham Royal

Can you quote for a block close to Burnham station?

Yes. Blocks of any size are within what we do. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.

Is Farnham Royal too far out for you?

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

How do you choose the sealant?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

How many days will you need on site?

It depends on the scope, but the work normally takes a few days for most blocks, with larger programmes scheduled building by building. For bigger or phased jobs, we’ll set out a timescale with the quote.

Do you check for asbestos in old sealant?

Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it, and if it’s suspected, work stops until it’s tested.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Cost factors for mastic joints

To price the job, we consider:

  • The product specified
  • Access and working height
  • Removal of failed or old sealant
  • Quantities, in metres or numbers

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Before you send an enquiry

The more we know, the firmer the quote. When you get in touch, include:

  • What the building is and how it’s used
  • Any dates the work must fit around
  • How the joints are reached, and at what height
  • Where the site is, with the postcode

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to ring 01277 525 020 or email us with what you know.

Looking after buildings in and around Farnham Royal

Farnham Royal is in the South East, one of the UK’s drier regions. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first. The 2 miles around Farnham Royal include three care or nursing homes. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.

If you look after a block within reach of Burnham station, 1.8 miles to the south-west of Farnham Royal, frame and balcony mastic can be renewed on one programme. If you own or manage units on a site such as Slough Trading Estate (1.5 miles south of Farnham Royal), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Older community buildings, Church of St Mary among them, often have frames of mixed ages whose mastic varies.

Farnham Royal is about 2 miles north of Slough, in Buckinghamshire. Any commercial site in Farnham Royal is covered. Our Buckinghamshire coverage takes in 308 places. For work in that direction, see our Reading page.

Business premises anywhere in SL2 are within our area for mastic joints. For a building on Church Road, Sospel Court and Montague Close or nearby, we can quote for mastic joints. Close to Farnham Royal, our area also takes in Britwell (1 mile south-west), East Burnham (1 mile north-west), Farnham Common (1 mile north), Egypt (1 mile north) and Slough (2 miles south). Further afield, our area takes in High Wycombe (8 miles north-west), Chesham (12 miles north), Marlow (7 miles west), Amersham (9 miles north), Beaconsfield (5 miles north) and Chalfont St Peter (5 miles north-east).

Around Farnham Royal

Around Farnham Royal, our work takes us to commercial buildings near Beechwood School, Caldicott School and The Crown Public House. Farnham Royal’s nearest station is Burnham station, about 1.8 miles south-west. Other landmarks nearby include Windsor Castle (4 miles south) and The History On Wheels Museum (2.8 miles south). Not far away are Burnham Beeches and Taplow Lake.

Map of Farnham Royal © OpenStreetMap contributors

Work for main contractors and building owners

CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

Aftercare for building managers

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:

  • Group repairs into a planned programme
  • Look at the sunniest and most exposed elevations first
  • Track which buildings were done and when
  • Check sealant joints during planned building inspections

Log the date and extent of the resealing for each block. It helps plan the next round and shows what was done.

Mastic fails gradually, then all at once in a wet spell. Resealing when cracking first shows avoids water damage and the complaints that come with it.

General trades versus a specialist

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Honest limits

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Asbestos-containing sealant, which we don’t remove
  • Leaks from above rather than through a joint
  • Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)

If in doubt, phone 01277 525 020 or email drawings and photos and we’ll say what we think.

What we seal

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

Trusted. Accredited. Insured.