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

Facade and window perimeter sealing in Dockenfield, Surrey

Facade joint and window perimeter sealing on commercial buildings in Dockenfield and across Surrey. CHAS accredited and fully insured, with a 12-month guarantee.

  • Previous reseals run over old sealant
  • Discoloured or dirty facade joints
  • Damp patches beside frames after rain
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need facade sealing in Dockenfield?

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Facade sealing in Dockenfield, done properly

Installing framed glazing systems isn’t part of our work. We handle the sealant joints that surround those elements: perimeter joints where frames meet the structure, panel joints and window perimeters with products suited to facade or glazing perimeter joints. If you have cold air coming in at window perimeters and failed seals around shopfront and entrance frames, we can put it right, whatever the surface. A single leaking joint is often how a building in Dockenfield first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Sites around smaller places like Dockenfield can be a fair drive from suppliers, so we come with everything the package needs, timed to the stage the job has reached. Send drawings or photographs and the programme and we will quote to suit.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

Place
Dockenfield (GU10)
Region
Surrey
Cover
12 months on every job
Quotes
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Do you need facade sealing in Dockenfield?

Adhesive failure, where the sealant peels away from one face, normally comes from poor preparation. Contamination, moisture or skipping the primer the maker specifies leave a weak bond.

If one of these sounds familiar, it’s time for a closer look:

  • Staining on stone next to old sealant
  • Sealant pulling away from frames or panels
  • Gaps between rainscreen or cladding panels
  • Cold air coming in at window perimeters

New units and refits on sites such as Blacknest Industrial Park, 2.1 miles west of Dockenfield, need their panel and perimeter joints sealed to the specification.

Before you book anyone

  • Will RAMS and insurance details be available?
  • How joint depth will be controlled
  • Their pre-qualification and accreditations
  • Whether old or failed sealant will be cut out, not overlaid

Choosing a commercial sealant contractor

What sealant work can’t fix

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Joints whose design needs changing by the specifier
  • Cracked or spalling substrates that need repair before sealing
  • Arranging specialist high-level access, which is planned with the client

If in doubt, speak to us on 01277 525 020 or send details through our quote form and we’ll say what we think.

Where we work in Dockenfield

  • Cladding panel joints
  • Window and door perimeters
  • Shopfront frames
  • Coping and flashing joints
  • Perimeter joints where frames meet the structure
  • Stone and brick facade joints

On site: what to expect

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. If others near Dockenfield need work, visits can be combined, which keeps travel down. You’ll have a fixed quote before work starts.

  1. Access, site rules and timing are settled with the client up front.
  2. Weather and temperature are checked against the product’s limits.
  3. Each joint is cut out and the edges inspected.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. Once signed off, the work carries our 12-month guarantee.

Getting the site ready

  • For older buildings, check the asbestos register before work
  • Send your site hours and access windows
  • Clear stock, furniture or equipment away from the joints

Request a quote

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

Get a quick quote

Related advice

Sites and facades in and around Dockenfield

Dockenfield sits in one of the drier corners of the country, the South East. Winter mornings still bring frost and condensation on frames and panels, so we time external mastic for dry faces and agree it with the site team. Central London is about 39 miles from Dockenfield. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and main contractors there need mastic that keeps to the programme.

University estates such as University for the Creative Arts, 3.9 miles to the north of Dockenfield, tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. For a contractor at a hotel such as Frensham Pond Hotel & Spa, 1.2 miles to the south-east of Dockenfield, the mastic often has to be finished before a reopening date.

Dockenfield is about 4 miles south of Farnham, in Surrey. Across the GU10 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Our Surrey coverage takes in 379 places. For work in that direction, see our Reading page, about 21 miles away.

If you need facade sealing in GU10, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. If your site is on The Street and Lake Lane or close by, send details and we’ll quote for facade joints. Nearby places we also cover include Batt's Corner (1 mile north-west), Frithend (1 mile west), Wishanger Common (1 mile south-east), Bucks Horn Oak (1 mile north-west) and Rowledge (2 miles north). Further afield, our area takes in Guildford (12 miles north-east), Woking (15 miles north-east), Camberley (13 miles north), Farnham (4 miles north), Frimley (11 miles north) and Haslemere (7 miles south-east).

Landmarks near Dockenfield

Dockenfield’s nearest station is Bentley (Hampshire) station, roughly 2.4 miles north-west of the centre. Nearby you will also find Powderham Castle (4 miles north) and Chase Community Hospital (4.1 miles south-west). Open spaces near Dockenfield include Farnham Heath.

Map of Dockenfield © OpenStreetMap contributors

Dockenfield: questions and answers

Is hospital work, at somewhere like Chase Community Hospital, something you do?

Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.

Will you plan work around the academic year at somewhere like University for the Creative Arts?

Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Let us know which documents your site asks for, and we will confirm them alongside the quote.

Can you just add new sealant on top?

No. A bead run over old sealant soon lifts. Our method is a full cut-out, cleaning, backing and a new bead.

Are you insured?

Yes. Mastic Doctor is fully insured, public liability included.

Which sealant do you use on facades?

Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Some joints call for hybrid, PU or polysulphide instead, as the specification or substrate requires.

When is resealing likely to be due?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Is it fine to apply new sealant on top of old?

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

Looking after the joints

Your facilities or cleaning team can help the joints last. Pass these on to them:

  • Check the asbestos register before old mastic is disturbed
  • Keep pressure washers away from fresh sealant
  • Report water ingress at frames as soon as it shows
  • Note when each elevation was last resealed

Following storms, look inside for damp or staining near frames. An early report usually means a small reseal rather than a bigger repair.

Check older buildings for asbestos before disturbing old mastic. Older sealants can contain asbestos, and if it’s suspected, we stop until it has been tested.

Work for main contractors and building owners

Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

Building owners and managing agents use us on everything from one building to a spread of sites around Dockenfield. Several sites can go on one quote, so there’s one set of paperwork to deal with.

Site staff or a sealant specialist?

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Accreditations

Trusted. Accredited. Insured.