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

Charlton-in-Dover construction mastic

Mastic packages for new-build and refurbishment projects in Charlton-in-Dover. CHAS accredited and fully insured, with a 12-month guarantee.

  • Failed sealant in an existing building being refurbished
  • Caulk cracking where joints are moving more than expected
  • Missed perimeter joints on a new elevation
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Need construction mastic in Charlton-in-Dover?

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

When to call us in Charlton-in-Dover

Three-sided adhesion is a frequent fault on new work. Bonded to the base of the joint and both sides, sealant can’t stretch evenly, so depth is controlled with backing rod or bond-breaker tape.

Things that typically lead to an enquiry:

  • Bath and shower joints scraped during the final clean
  • Missed perimeter joints on a new elevation
  • A mastic package split between trades with no clear owner
  • Failed sealant in an existing building being refurbished

When a college such as East Kent College (0.5 miles south-east of Charlton-in-Dover) builds or refurbishes, the mastic package usually has to fit around students and staff.

Questions to ask before you book

  • Is the sealant right for the movement and the substrate?
  • What the guarantee covers, and for how long
  • What level of public liability insurance do they hold?
  • Will failed sealant be removed rather than covered?

Choosing a commercial sealant contractor

How we handle construction mastic in Charlton-in-Dover

On refurbishments, the mastic package typically includes cutting out old sealant as well as sealing new work. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone and the asbestos survey is checked first on older stock. After that, the joints are prepared and sealed to the specification. The enquiries we see most involve perimeter gaps outside the sealant’s range and frame perimeters left unsealed or poorly sealed, across sanitary and kitchen joints, brick and block movement joints and cladding and panel joints. A specialist sealant contractor works differently from a general builder: on jobs in Charlton-in-Dover, preparation and product choice get the time they need.

Building work in places the size of Charlton-in-Dover is normally small-scale: a handful of new houses, barn conversions, a school or hall extension. Small schemes still need window perimeters, facade joints and internal sealant done to the specification.

Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Charlton-in-Dover (CT16, CT17, CT15)
Region
Kent
Guarantee
A 12-month guarantee
Price
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

Maintenance after handover

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

  • Brief following trades on areas that have been sealed
  • Bring the mastic contractor in after the last trades are through
  • Ask cleaners to use soft cloths around fresh sealant
  • Keep product details for future maintenance

After we have sealed an area, it helps to keep other trades from damaging the joints. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked, and that time depends on the product, temperature and joint depth.

Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors, leaving the remedial work to the contractor. Getting the product and preparation right first time avoids that.

Your questions answered

Would you work within a site like Buckland Hospital?

Yes. We work in healthcare settings as well as offices and schools. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Can work at a site such as East Kent College fit around teaching?

Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Which sealant will you use?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

When can you be on site?

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

Will you stick to the specified products?

The specification decides the product and flag anything that doesn’t look right for the joint. Specifications often reference BS EN 15651 or BS 6213.

What if there’s asbestos in the old mastic?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

What do you charge?

There isn’t a price list, as every site differs. With photographs or drawings, we can give you a fixed quote.

What sets the cost

Quotes vary with the job. It mainly depends on:

  • The product specified
  • Any access equipment needed
  • How much existing material needs removing
  • Joint width, depth and condition

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.

What to include in your enquiry

A few photographs plus some basic facts will normally do. It helps to include:

  • Clear photos of the problem areas
  • How the joints are reached, and at what height
  • The product your specification calls for
  • When you need the work done

For a fixed quote, phone 01277 525 020 or send details through our quote form, telling us the site location and the nature of the job. You can also send details through our quote form.

What happens if it’s left?

Leaving mastic to whichever trade is fitting the element can look cheaper on paper. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple and a consistent finish. In a smaller place such as Charlton-in-Dover, getting a contractor back for a second visit takes time, so we’d suggest renewing all the joints that are going, not just the worst.

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.

Why clients in Charlton-in-Dover choose us

  • Colour options checked against the specified product
  • Fully insured, including public liability cover
  • CSCS-carded applicators
  • Coloured sealants to suit the setting, where available

See how commercial sealant jobs are priced or our accreditations.

Different surfaces, different methods

Window and door perimeters

Gaps around frames have to be within the sealant’s range. Gaps outside the product’s range are raised with the site team.

Bathrooms, en suites and washrooms

Across a block of flats or a hotel, sanitary sealing is repeated in every room. One applicator team gives the same finish everywhere.

Diagnose, treat, sign off

Working in a building that stays open takes some planning. We sign and contain the area we are in, with routes through the building left open and move on in phases so staff and visitors can carry on around us. For a site in Charlton-in-Dover, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.

  1. We price from the drawings, specification and programme you send.
  2. You receive a fixed quote listing scope, products and phasing.
  3. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. We seal each plot or floor as it’s released to us.
  5. Each joint is prepared, backed to depth and sealed in the product the specification names.
  6. We close out snagging and hand over with a 12-month guarantee.

Preparing the site

  • Warn occupants and staff about the work
  • Let us know about inductions and permits
  • Send any specification or drawings in advance

Ask for a quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, speak to us on 01277 525 020 or email us.

Ask for a quote

Related advice

Construction mastic in Charlton-in-Dover: the local picture

With the shore within about 1 mile, Charlton-in-Dover counts as a coastal location. Coastal exposure means perimeter and cladding joints work harder than on an inland job, so joint design, primers and product choice deserve extra care. Charlton-in-Dover is about 66 miles from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and each scheme needs its mastic sealed to programme.

On a healthcare site such as Buckland Hospital, 0.7 miles to the west of Charlton-in-Dover, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. School extensions, at buildings such as Charlton Church of England Primary School, typically run to the summer holidays, mastic included.

Charlton-in-Dover is about 1 mile south-east of Dover, in Kent. Businesses, contractors and managing agents in Charlton-in-Dover can call on us for mastic packages. 931 places across Kent fall within our area, including Charlton-in-Dover. We also cover London, around 66 miles from Charlton-in-Dover.

If you need construction mastic in CT16, CT17 and CT15, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Odo Road, Eric Road and Lorne Road are within our area. Main routes into Charlton-in-Dover include the A256. Nearby places we also cover include Tower Hamlets (1 mile south-west), Guston (2 miles north-east), Church Whitfield (2 miles north), East Langdon (3 miles north-east) and West Cliffe (3 miles north-east). A short drive away, we cover Canterbury (14 miles north-west), Folkestone (7 miles south-west), Ramsgate (15 miles north), Deal (7 miles north-east), Hythe (11 miles south-west) and Walmer (6 miles north-east).

Near you in Charlton-in-Dover

Recent enquiries here include premises near Dover Grammar School for Girls, St Edmund's Catholic School and The Red Lion pub, among other places. For rail, the closest station is Dover Priory station, roughly 0.6 miles south. Well-known places in the area include Dover Castle (0.9 miles south-east) and Old Town Gaol (under half a mile south). For a walk, there’s Dover Western Heights.

Map of Charlton-in-Dover © OpenStreetMap contributors
Accreditations

Trusted. Accredited. Insured.