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

Dunk's Green facade sealing

Need facade sealing in Dunk's Green? It’s simple: send details, get a quote, we seal, guaranteed.

  • Cladding panel joints that have opened up
  • Sealant pulling away from frames or panels
  • Perimeter joints where frames meet the structure
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Need facade sealing in Dunk's Green?

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

How we handle facade sealing in Dunk's Green

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. The enquiries we see most involve failed sealant on precast panel joints and leaks at window and door perimeters, across shopfront frames, cladding panel joints and coping and flashing joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Dunk's Green is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Around smaller places like Dunk's Green, building work usually means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

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
Dunk's Green (TN11)
Region
Kent
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026

Building and refurbishing in Dunk's Green

Central London is about 24 miles from Dunk's Green. Towns within reach of London tend to keep building, from flats to offices and schools, which keeps mastic packages in demand. Dunk's Green sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, which is why external dates are agreed with the site manager.

University estates such as University of Kent - Tonbridge (4.4 miles south of Dunk's Green) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Extensions at sites like Tonbridge Cottage Hospital (5.3 miles south of Dunk's Green) usually sit beside working departments, and the mastic follows strict access rules. Units on estates such as The Alders Industrial Estate, 2.9 miles to the east of Dunk's Green, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Dunk's Green is about 4 miles north of Tonbridge, in Kent. Looking for facade sealing in Dunk's Green? We can help, as we do across Kent. We work across 931 places in Kent, large and small. Sites around London have their own page, roughly 24 miles from Dunk's Green.

Business premises anywhere in TN11 are within our area for facade joints. Close to Dunk's Green, our area also takes in Plaxtol (1 mile north), Roughway (1 mile east), Claygate Cross (2 miles north), Crouch (2 miles north) and Pittswood (2 miles south). Nearby towns on our patch include Maidstone (10 miles east), Dartford (14 miles north), Sevenoaks (6 miles west), Royal Tunbridge Wells (8 miles south), Gravesend (13 miles north) and Tonbridge (4 miles south).

Local landmarks in Dunk's Green

Recent enquiries here include premises near Hadlow Rural Community School, The Kentish Rifleman Public House and Ivy Hatch Nature Reserve and the streets around them. The nearest railway station is Borough Green & Wrotham station, roughly 2.8 miles north. A little further out are Tonbridge Cottage Hospital (5.3 miles south) and Ightham Court (3.1 miles north). The countryside around Dunk's Green includes Barden Lake.

Map of Dunk's Green © OpenStreetMap contributors

After the work

Keep the joints in good shape with a few simple steps:

  • Avoid patch repairs on failed facade joints
  • Avoid harsh cleaners on facade sealant
  • Keep sills, gutters and drainage paths clear
  • Confirm the survey covers external sealants in older buildings

Look at perimeter and panel joints as part of routine building checks. Signs to look for are cracking, edges lifting, chalking and stiffness.

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

How the quote is worked out

Sealant work doesn’t have a standard rate, because every site is different. What we take into account:

  • Specialist products, such as fire-rated or hygienic sealants
  • Quantities, in metres or numbers
  • Induction, permit and paperwork requirements
  • Distance, for remote addresses

Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.

Details that help us quote

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

  • Any specification or named product
  • Whether an asbestos survey exists
  • Drawings or a marked-up plan, if available
  • What the building is and how it’s used

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.

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.

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Questions we are asked in Dunk's Green

Will you plan work around the academic year at somewhere like University of Kent - Tonbridge?

Yes, holiday working periods are the norm on campus jobs. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Is hospital work, at somewhere like Tonbridge Cottage Hospital, something you do?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Will you check whether the sealant is causing the leak?

Yes. We check the sealant joints and report what we find. If the water seems to come from a roof, sill or the glazing unit instead, we say so.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

Is the work guaranteed?

Yes. Our workmanship is backed for 12 months on every job.

Which sealant will you use?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Can you handle several sites?

Yes. A group of buildings can go on one quote, with one point of contact.

Owners, agents and contractors

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.

As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Diagnose, treat, sign off

Inspect, seal, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. For a building around Dunk's Green, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  4. Faces are cleaned, primed where needed and backed.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. Once signed off, the work carries our 12-month guarantee.

What we need from you

  • Make sure the joints can be reached
  • Confirm the product named in the specification
  • Flag any permit to work we’ll need

Getting a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Get a price

Read more

When something else is needed

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Work on the window or framing system itself
  • Arranging specialist high-level access, which is planned with the client
  • Water getting in through cracked render or porous masonry

Not sure which it is? You can give us a call on 01277 525 020 or email a schedule or drawings and we’ll tell you honestly.

Surfaces we seal

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

Trusted. Accredited. Insured.