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

Facade Sealing in Dungate

Sealant work in Dungate for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, quoted at a fixed price.

  • Weathered joints at frame-to-structure perimeters
  • Patch repairs that keep failing
  • Old perimeter mastic that has dried out
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Need facade sealing in Dungate?

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

Common questions from Dungate clients

Is Dungate too far out for you?

Not at all. Dungate is within our area. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Do you take on work at healthcare sites like Sittingbourne Memorial Hospital?

Yes, provided the work is planned with the site’s estates team. Each area is agreed with the ward or department and the estates team in advance.

How do you choose the sealant?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months on every job.

Do you offer coloured sealant?

Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We’ll confirm the colours available for the specified product.

Do you replace windows or glass?

No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, such as perimeter joints where frames meet the structure.

Can you fit around our working hours?

Mention the site’s hours and access windows in your enquiry, and we will schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.

Facade sealing in Dungate

External joints face UV, rain, temperature swings and building movement all year. How long a joint lasts depends on the movement it takes, its exposure, the product and how well it was installed. When the time comes, we cut the old sealant out completely and start again. If you have previous reseals run over old sealant and old perimeter mastic that has dried out, we can put it right. Whoever orders the work in Dungate, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

In the countryside around places like Dungate, conversion schemes put new frames into old stone, flint, brick or timber. A product that grips an irregular face, with a colour that suits the building’s character, is usually what’s needed.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Dungate (ME9)
Region
Kent
Cover
12 months on our workmanship
Quote
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

How a job runs

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. For a building around Dungate, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. We start with photos, drawings or a visit to see the joints and agree access.
  2. We confirm the joint type, movement and the specified product.
  3. Failed beads are removed in full and both faces cleaned back.
  4. Primer is applied where the maker specifies it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

What we need from you

  • Share the asbestos register for older buildings
  • Warn occupants and staff about the work
  • Send any specification or drawings in advance

Get a fixed quote

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.

Get a price

Related advice

How the quote is worked out

The price varies from site to site. Expect it to depend on:

  • Location, for remote and island sites
  • The product specified
  • Induction, permit and paperwork requirements
  • Removal of failed or old sealant

There’s no price list, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.

Sending details for a quote

Whether it’s one area or a whole building, the same details help:

  • Approximate linear metres or a joint schedule
  • When you need the work done
  • The type of building and who uses it
  • How the joints are reached, and at what height

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

Should maintenance staff do it?

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. For that reason, many FMs and contractors use a sealant specialist from the outset.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Honest limits

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

  • Movement beyond what any sealant can handle
  • Cracked or spalling substrates that need repair before sealing
  • Providing access systems for the work

If you are not sure, just ring 01277 525 020 or email drawings and photos and we will give you a straight answer.

What we seal

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

Do you need facade sealing in Dungate?

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

Most enquiries start with one or more of the following:

  • Patch repairs that keep failing
  • Failed seals around shopfront and entrance frames
  • Discoloured or dirty facade joints
  • Air leaks through failed facade joints

Units on estates such as Kent Science Park (1.3 miles north-west of Dungate) tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Before you book anyone

  • Whether their applicators hold CSCS cards
  • Their public liability cover
  • The named product and why it was chosen
  • Are they CHAS accredited or on Constructionline?

Choosing a commercial sealant contractor

Facade sealing around Dungate: points for this area

Dungate 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 external mastic is timed for workable conditions and agreed with the site manager. At about 39 miles from central London, Dungate is within reach of the capital. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes.

When a college such as Sittingbourne College (2.7 miles north-west of Dungate) builds or refurbishes, the mastic package normally has to fit around students and staff. Extensions at sites like Sittingbourne Memorial Hospital (2.4 miles north of Dungate) typically sit beside working departments, and the mastic follows strict access rules.

Dungate is about 3 miles south of Sittingbourne, in Kent. We send applicators to Dungate for facade joints. Our Kent coverage takes in 931 places. London is covered too, around 39 miles from Dungate.

Anyone looking for facade sealing in ME9 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Sites close to Dungate are covered too, including Newbury (1 mile north-east), Kingsdown (1 mile east), Rodmersham Green (1 mile north), Highsted (1 mile north) and Bapchild (1 mile north-east). A short drive away, we cover Maidstone (10 miles west), Ashford (12 miles south-east), Canterbury (14 miles east), Sittingbourne (3 miles north), Whitstable (13 miles east) and Faversham (6 miles east).

Landmarks near Dungate

Locally, jobs take us to sites close to Fulston Manor School and Cromers Wood, among other places. Dungate’s nearest station is Sittingbourne station, about 2.9 miles north. A little further out are Sittingbourne Heritage Museum (2.6 miles north) and Newnham Castle (2.5 miles south-east).

Map of Dungate © OpenStreetMap contributors

Aftercare for building managers

Once the work is signed off, a little attention goes a long way:

  • Add perimeter sealant to planned maintenance checks
  • Clear debris that holds water against joints
  • Keep pressure washers away from fresh sealant
  • Insist on a full cut-out when joints are renewed

Blocked sills and gutters push water at the joints. Sealant copes better when water runs off the facade as designed.

Use each reseal to correct the joint: the right width, backing rod and a sealant with enough movement capability. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Accreditations

Trusted. Accredited. Insured.