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

Commercial sealant contractors in Dungate, Kent

Sealant work in Dungate for main contractors, managing agents and facilities managers: sealant work for offices, shops, hotels and other commercial buildings, with a fixed quote first.

  • External beads that have gone brittle and cracked
  • Wall and floor joints that have lost their seal
  • Water staining near frames, panels or ceilings
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Commercial sealant contractors across 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

Does your area include sites such as Kent Science Park, near Dungate?

Yes, sites like Kent Science Park are within our area, along with the rest of Dungate. To start, just call the office on 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.

Can you match sealant colours for premises in Dungate?

Yes. Colour matching to frames, cladding, stone and shop-fit finishes is a regular part of the work. The quote lists the colours the product is made in.

How long does a typical visit take?

The duration is planned around your programme and the access we are given. You will have an expected duration with the quote.

Do you work to architects’ specifications?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.

Do you hold CHAS accreditation?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

What guarantee do you give on resealing?

It’s backed by our 12-month guarantee. Should anything we did fail within that period, let us know.

Which sealant will you use?

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

Commercial sealant contractors in Dungate

Commercial occupiers rarely want a floor out of action for sealant work. Work is scheduled around the site hours and access windows you give us; phasing keeps some washrooms, kitchens or entrances available while others are done. It’s the same approach in offices, retail units, hotels, schools and healthcare buildings. If you’re dealing with smeared sealant across finishes from a rushed job and water staining near frames, panels or ceilings, we can put it right. Most enquiries from Dungate start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Multi-site clients with buildings in and around Dungate can put several sites on one programme, with one quote format and one point of contact.

Work in smaller places such as Dungate tends to come one building at a time: a pub kitchen, a hall, a small office. We will want a full list and photos first, so the right products come on the day and nothing waits for a second trip.

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

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Dungate (ME9)
Region
Kent
Guarantee
12 months on our workmanship
Quote
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026

Do you need commercial sealant contractors in Dungate?

A good share of the joints we inspect were topped up instead of being renewed. New silicone has nothing to key into so it soon peels and traps moisture against the joint. Getting back to a clean joint then means removing every layer.

Things that typically lead to an enquiry:

  • Smeared sealant across finishes from a rushed job
  • Black mould through washroom sealant that won’t clean off
  • A top-up bead over failed sealant, now lifting
  • Expansion joints with the sealant torn out

Offices and shops close to stations such as Sittingbourne station, 2.9 miles to the north of Dungate, tend to be busy all day, so sealant work is planned around opening hours.

Questions to ask before you book

  • How the existing material will be dealt with
  • How joint depth will be controlled
  • Their public liability cover
  • Their plan for phasing and protecting the area

Our contractor checklist

When to bring in a specialist

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

Site maintenance staff can often handle a short internal joint. 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.

What happens if it’s left?

Leaving a failed joint rarely saves money. Once water gets behind the seal, finishes and ceilings underneath are next, and the bill then involves other trades. Resealing while only the sealant has failed keeps the job small. For buildings around smaller places like Dungate, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

Pricing sealant joints depends on how many there are, their condition and the access, and any specification that applies. Ask us for a fixed quote.

Why choose Mastic Doctor in Dungate

  • Our applicators hold CSCS cards
  • Joints cleaned back to sound surfaces
  • Constructionline member for supplier checks
  • Matching to RAL references, product permitting

Read what affects the cost and how we’re accredited.

Working on commercial sites near Dungate

At about 39 miles from central London, Dungate is within reach of the capital. The commuter belt holds a great many offices, retail parks and business parks. Firms with branches across the South East can use one contractor for every site. Dungate sits in one of the drier corners of the country, the South East. External joints still need dry faces and the right temperature, and damp or frosty mornings can hold work up.

Offices at parks like Kent Science Park (to the north-west of Dungate) have receptions, kitchens and glazed partitions where a tidy joint matters.

Dungate is about 3 miles south of Sittingbourne, in Kent. Dungate sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. 931 places across Kent fall within our area, Dungate among them. We also cover London, around 39 miles from Dungate.

If you need commercial sealant contractors in ME9, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Just outside Dungate, we also work in Newbury (1 mile north-east), Kingsdown (1 mile east), Rodmersham Green (1 mile north), Highsted (1 mile north) and Bapchild (1 mile north-east). Bigger towns within reach include 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).

What’s near Dungate

In Dungate, that means premises near Fulston Manor School and Cromers Wood. The nearest railway station is Sittingbourne station, about 2.9 miles north. Other landmarks nearby include Sittingbourne Heritage Museum (2.6 miles north) and Newnham Castle (2.5 miles south-east).

Map of Dungate © OpenStreetMap contributors

Diagnose, treat, sign off

We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Jobs in and around smaller places like Dungate are normally planned as a single visit, so photos and measurements up front really help. That way the right products come on the day.

  1. Send details through our quote form, or ask for a site visit.
  2. The cause is diagnosed and the scope priced as a fixed quote.
  3. Work is phased around your occupiers where areas need to stay in use.
  4. Old sealant is cut out completely, never sealed over.
  5. A suitable product for each joint goes in at the right depth and is tooled.
  6. A final walk-round, then the 12-month guarantee applies.

Getting the site ready

  • Send any specification or drawings in advance
  • For older buildings, check the asbestos register before work
  • Explain the parking and delivery arrangements

Getting a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, give us a call on 01277 525 020 or send details through our quote form.

Get a quick quote

Related advice

For managing agents and facilities managers

CHAS accredited and a Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

After the work

After handover, a little attention goes a long way:

  • Brief cleaning contractors to avoid scourers and blades on sealant
  • Keep a record of which joints were resealed and when
  • Report cracked or peeling sealant early
  • Put external and wet-area joints on a regular inspection round

Add the resealed joints to your planned maintenance inspections. Regular checks pick up small failures before they become leaks, with external elevations and wet areas first in line. If anything looks wrong, call the office on 01277 525 020 or email drawings and photos with a photo.

An open joint in a food area or toilet collects dirt and moisture that cleaning can’t reach. Environmental health officers look at how cleanable surfaces are.

Accreditations

Trusted. Accredited. Insured.