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

Construction and new-build mastic in Dunk's Green, Kent

Planning work on a mastic package in Dunk's Green? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Bath and shower joints scraped during the final clean
  • Caulk cracking where joints are moving more than expected
  • New external sealant already peeling away
1
Send details
Photos, drawings or a schedule, or we visit.
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
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
Constructionline member
£5m PL insurance

Construction mastic for businesses in Dunk's Green

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

Surface by surface

Kitchens and utility areas

Commercial kitchens often need hygienic or food-safe sealants. Joints are sealed smooth so they’re easy to clean.

External facade and movement joints

Brickwork, blockwork and panel movement joints need a sealant with the right movement capability. We set the depth with backing rod to avoid three-sided adhesion.

How we handle construction mastic in Dunk's Green

A typical mastic package covers more than window perimeters: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. One contractor for all of it keeps the responsibility in one place, and one applicator team gives a consistent finish. Most enquiries involve failed sealant in an existing building being refurbished and frame perimeters left unsealed or poorly sealed, across internal decorators’ caulk, floor and skirting junctions and window and door perimeters. For commercial sealant work in Dunk's Green, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Around smaller places like Dunk's Green, building work typically means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Dunk's Green (TN11)
Wider area
Kent
Cover
12 months on our workmanship
Price
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

Aftercare for building managers

For the best life from the joints:

  • Check frame gaps are within the sealant’s range before sealing
  • Allow flexibility for external sealing in damp or cold weather
  • Record the products used in the O&M file
  • Get the mastic subcontractor involved early in the programme

At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later and avoids guesswork when joints are renewed. We can confirm the handover information you need when we quote.

Leaving the mastic snag list to the end squeezes everyone. A planned close-out through each area as it completes keeps the list short, and avoids a rush.

FAQs: Dunk's Green

Is The Alders Industrial Estate, near Dunk's Green, within your area?

Yes. Estates, retail parks and business parks around Dunk's Green, The Alders Industrial Estate among them, are all within reach. A few photographs and the unit address let us price the work.

Can you work around term dates at a campus such as University of Kent - Tonbridge?

Yes. We plan campus work around teaching, exams and residence turnarounds. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

Can you send site paperwork?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.

Can you fit around our working hours?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

Do you install fire-rated sealant as part of a package?

Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. Fire-stopping design and sign-off sit with the designer and building control.

Are you fully insured?

Yes. Our insurance certificate can be sent alongside the quote.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, call 01277 525 020 or email us. Include photographs or drawings if you have them.

Commercial clients in Dunk's Green

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Dunk's Green can form part of a wider programme across Kent.

Doing it in-house

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

When to call us in Dunk's Green

On a live site, contamination is the biggest threat to a new joint. Plaster dust, release agents, protective film residue and damp all stop sealant bonding so faces get cleaned, and primer goes on wherever the maker specifies, even on new work.

It’s worth sending us details if you spot any of the following:

  • Failed sealant in an existing building being refurbished
  • Caulk cracking where joints are moving more than expected
  • Sanitary sealant damaged by following trades
  • Frame gaps too wide for sealant alone

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.

What your quote should include

  • Is the sealant right for the movement and the substrate?
  • Whether their applicators hold CSCS cards
  • How the joint faces will be prepared and primed
  • How they’ll work around occupants

Choosing a commercial sealant contractor

Contractors’ notes for Dunk's Green

Dunk's Green is about 24 miles from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, and each scheme needs its mastic sealed to programme. Rainfall across the South East, Dunk's Green included, is lower than in many parts of the UK. 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.

When a school such as Plaxtol Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. Projects at colleges like Hadlow College, 2.1 miles to the south-east of Dunk's Green, tend to run to term dates, so the mastic is planned tightly.

Dunk's Green is about 4 miles north of Tonbridge, in Kent. We cover commercial sites throughout Dunk's Green, whether it’s a single job or part of a planned programme. We work across 931 places in Kent, from busy centres to rural villages. For work in that direction, see our London page.

Work on mastic packages is covered throughout TN11, whatever the building. If your building is just outside Dunk's Green, we cover Plaxtol (1 mile north), Roughway (1 mile east), Claygate Cross (2 miles north), Crouch (2 miles north) and Pittswood (2 miles south). Further afield, our area takes in 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).

Around Dunk's Green

Locally, jobs take us to sites close to Hadlow Rural Community School, The Kentish Rifleman Public House and Ivy Hatch Nature Reserve and the streets around them. The closest station to Dunk's Green is Borough Green & Wrotham station, about 2.8 miles north of the centre. Well-known places in the area include 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

How a job runs

On arrival, 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, with the work itself typically taking whatever the programme allows, since the work follows the trades as areas are released. For a building around Dunk's Green, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.

  1. Drawings, specification and programme come to us.
  2. Quantities are measured and a fixed price returned.
  3. The sequence is agreed with the site manager.
  4. Plots or floors are sealed as they’re handed over.
  5. Every joint is cleaned, set to depth and sealed with the specified product.
  6. After snagging, the work is handed over under our 12-month guarantee.

Preparing the site

  • Have the specification and drawings to hand
  • Clear stock, furniture or equipment away from the joints
  • Tell us your opening times and when work is allowed

Ask for a quote

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or call the office on 01277 525 020 or use the quote form to discuss it first.

Ask for a quote

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