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

Holborough facade sealing

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

  • Leaks at window and door perimeters
  • Draughts around frames and panels
  • New sealant peeling off old mastic
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need facade sealing in Holborough?

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

About our facade sealing in Holborough

A good facade joint depends on design as much as product. The width has to suit the expected movement and the sealant’s movement capability, and closed-cell rod sets the depth, keeping the bond to two faces, often at around 2:1 width to depth, as the manufacturer advises. We work on coping and flashing joints, perimeter joints where frames meet the structure and stone and brick facade joints, and the failures we’re asked to look at most are water coming in around window frames and sealant pulling away from frames or panels. A specialist sealant contractor works differently from a general builder: in Holborough, that means joint design, primers and backing rod as standard.

For a contractor on a smaller site near Holborough, one mastic visit at the right stage saves return trips. Let us know the key stages and we will time the work so nothing waits on us.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Where
Holborough (ME6, ME1, ME19)
Wider area
Kent
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Common problems we fix in Holborough

New sealant run over old sealant rarely holds. Fresh silicone won’t stick to cured silicone, so the new bead peels away within a season or two.

Common reasons buildings call us in:

  • Cladding panel joints that have opened up
  • Leaks at window and door perimeters
  • Hard, chalky sealant that no longer flexes
  • Patch repairs that keep failing

Extensions at sites like St. Catherine's Hospital (to the north-east of Holborough) typically sit beside working departments, and the mastic follows strict access rules.

Questions to ask before you book

  • The terms of the workmanship guarantee
  • How the existing material will be dealt with
  • Will CSCS-carded applicators be on site?
  • Health and safety accreditation such as CHAS

Choosing a commercial sealant contractor

Facade sealing around Holborough: how the place shapes the job

Holborough sits in one of the drier corners of the country, the South East. Even so, frost and condensation on steel and glass are common on winter mornings, so external mastic is timed for workable conditions and agreed with the site manager. At about 26 miles from central London, Holborough is within reach of the capital. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand.

New units and refits on sites such as New Hythe Business Park (to the south of Holborough) need their panel and perimeter joints sealed to the specification. School extensions, at buildings such as Valley Invicta Primary School at Holborough Lakes, normally run to the summer holidays, mastic included.

Holborough is about 4 miles west of Chatham, in Kent. Looking for facade sealing in Holborough? We can help. Our Kent coverage takes in 931 places, from busy centres to rural villages. For work in that direction, see our London page.

If you need facade sealing in ME6, ME1 and ME19, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Lee Road, Byrne Road and Ladds Lane are within our area. Sites close to Holborough are covered too, including Snodland (1 mile south-west), Peters Village (1 mile east), Scarborough (1 mile east), Upper Halling (1 mile north-west) and Wouldham (1 mile north-east). Bigger towns within reach include Maidstone (6 miles south-east), Sittingbourne (13 miles east), Dartford (12 miles north-west), Sevenoaks (12 miles west), Gravesend (7 miles north-west) and Tonbridge (12 miles south-west).

What’s near Holborough

Recent enquiries here include premises near The Monks Head pub, Holborough Marshes and The Holmesdale School. The closest station to Holborough is Snodland station, roughly 0.5 miles south. A little further out are St. Catherine's Hospital (4.2 miles north-east) and Leybourne Castle (2.5 miles south-west). Not far away are Blue Bell Hill and Burham Down.

Map of Holborough © OpenStreetMap contributors

Common questions from Holborough clients

Do you cover business parks and estates near Holborough, such as New Hythe Business Park?

Yes. Our area takes in Holborough and its surroundings, with estates and business parks such as New Hythe Business Park included. Photos and a short description are enough for a first look.

Is Holborough too far out for you?

No. Places such as Holborough are covered as much as the big towns. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.

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

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

How long does a job like this take?

It depends on the scope, but the work normally takes a day or two for a few elevations, and longer where access has to be moved around the building. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Can you follow the specification on our project?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.

Do you replace failed glazing units?

No. We don’t install glazing systems, windows or glass. We seal the joints around them, such as perimeter joints where frames meet the structure.

Will you quote for a small job?

Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.

Work for main contractors and building owners

If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

Doing it in-house

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.

Why it’s worth doing now in Holborough

Scaffold or access already on site makes resealing much simpler. Combine it with planned external works and you only arrange access once, saving a second set-up. Sealant hardens, cracks and loses grip with age, UV and movement. Replacing it before it fails keeps water out.

What a job costs comes down to how many linear metres there are, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.

Why choose Mastic Doctor in Holborough

  • One phone line for London, the South East and Scotland
  • Colour options checked against the specified product
  • Fully insured, including public liability cover
  • Matching to RAL references, product permitting

See how commercial sealant jobs are priced and our accreditations and insurance.

On site: what to expect

When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, and the work usually takes a day or two for a few elevations, and longer where access has to be moved around the building. If neighbouring businesses or buildings around Holborough need work too, visits can be combined. Tell us your site hours and we’ll plan around them.

  1. We plan access and the order of elevations with the client.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. We remove the old bead and check the edges are sound.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. We hand over with our 12-month workmanship guarantee.

Getting the site ready

  • Send your site hours and access windows
  • Share the asbestos register for older buildings
  • Make sure the joints can be reached

Ask for a quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

Get a price

Read more

Keeping the joints sound

Problems stay small when the joints are checked regularly. Specifically:

  • Check that rainwater leaves the facade the way it was designed to
  • Keep the sealant details on the building file
  • Walk the elevations once or twice a year
  • Avoid patch repairs on failed facade joints

Let the new sealant cure before washing the facade or windows near it. Keep high-pressure jets and strong chemicals away from new sealant.

In pre-2000 buildings, check the asbestos register before old sealant is cut out. Older sealants can contain asbestos, and if it’s suspected, we stop until it has been tested.

Accreditations

Trusted. Accredited. Insured.