The Mastic Doctor team standing beside their branded vans outside an office building
Dundee · Scotland

Commercial sealant contractors in Charleston, Dundee

Commercial sealant contractors in Charleston, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Layers of sealant, all of them failing
  • Gaps behind commercial kitchen worktops and sinks
  • Water staining near frames, panels or ceilings
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Commercial sealant contractors in Charleston

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

Commercial mastic work in Charleston

If you look after more than one building, a single sealant contractor saves a lot of chasing. We take on one-off reseals, runs of jobs across a portfolio and planned maintenance programmes: send details, get a fixed quote, we seal, and a 12-month guarantee once it’s signed off. For sites in Charleston, the quickest start is to speak to us on 01277 525 020 or use the quote form with a list of addresses. Most enquiries involve wall and floor joints that have lost their seal and messy, uneven beads from earlier work that let the building down, across floor and threshold joints, washrooms and tea points and movement joints in walls and floors. Whether you call it commercial sealant work, mastic application or joint sealing, in Charleston it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

In Charleston, as anywhere, the first joints to go are normally the ones that work hardest: south-facing perimeters, entrance thresholds and busy washrooms.

Much of the older commercial stock in Scotland’s cities is sandstone or, in Aberdeen, granite. Stone needs a neutral-cure sealant suited to it and a colour that sits quietly against the masonry.

Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Place
Charleston (DD2)
Region
Dundee
Cover
12 months on every job
Price
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

What sealant work can’t fix

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Cracking that needs a structural engineer to look at it
  • Roof leaks that only look like a joint problem
  • Faulty windows rather than failed perimeter sealant

If you’re not sure, just speak to us on 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.

What we seal

  • External facade joints
  • Washrooms and tea points
  • Window and door perimeters
  • Floor and threshold joints
  • Kitchen worktops and splashbacks
  • Movement joints in walls and floors

Shops, offices and hotels in and around Charleston

Charleston sits close to the coast, within about 2 miles. Shopfronts, frames and external joints on commercial buildings there take wind-driven rain and, closer to the shore, salt in the air. We choose a product rated for the exposure, then confirm the colours available for it. The 2 miles around Charleston include six care or nursing homes. Care settings have kitchens, lounges and corridors where joints need to be neat and easy to clean.

Occupiers with premises at both Wester Gourdie Industrial Estate and Ardyle Industrial Estate could have the sealant at each handled under one quote. A unit on an estate like Wester Gourdie Industrial Estate, less than half a mile to the west of Charleston, typically has an office front, a trade counter and staff facilities with joints of their own. Shops and cafés around stations like Invergowrie station, 1.4 miles south-west of Charleston, trade from early, so work is timed around them.

Charleston is about 2 miles west of Dundee, in Dundee. We send applicators to Charleston for sealant joints, handled exactly as we handle every other area. Our Dundee coverage takes in 28 places.

Postcode districts covered here: DD2 for sealant joints. We cover commercial and managed buildings on Liff Road, South Road and Dunholm Road. Just outside Charleston, we also work in Menzieshill (1 mile south), Dryburgh (1 mile north-east), Ninewells (1 mile south), Gowrie Park (1 mile south-west) and Camperdown (1 mile north). Bigger towns within reach include Broughty Ferry (7 miles east), Stobswell (3 miles east), Barnhill (7 miles east), Pitkerro (4 miles east), Whitfield (4 miles east) and Woodside (3 miles east).

Near you in Charleston

In Charleston, that means premises near Cox Branch Library and Balgay Hill and the streets around them. The nearest railway station is Invergowrie station, roughly 1.4 miles south-west. A little further out are Overgate Centre (2.6 miles east) and Dudhope Castle (2.1 miles east). The countryside around Charleston includes Balgay Hill and Piperdam Loch.

Map of Charleston © OpenStreetMap contributors

What happens if it’s left?

A cheaper quote sometimes means the old bead stays in. New sealant laid on old silicone has nothing to bond to, so it peels. Our prices always include removal of the failed bead and full joint preparation. Scottish city buildings take plenty of rain, and failed external joints let it into stone walls and around frames. Renewing them early protects the fabric.

What a job costs comes down to the quantity of joints, how much old material needs removing and the access. Call for a fixed quote when you are ready.

What you get with us

  • 12-month guarantee on workmanship
  • CSCS-carded applicators
  • One number for every site we cover
  • Public liability insurance in place

Take a look at our cost guide and how we’re accredited.

Charleston: questions and answers

Our building in Charleston is near the coast: does that change the sealant?

It can. Coastal exposure works external joints harder than inland weather. We check the specified product suits the exposure and pay close attention to preparation.

Will you take on work at estates like Wester Gourdie Industrial Estate, close to Charleston?

Yes, sites like Wester Gourdie Industrial Estate are within our area, along with the rest of Charleston. A few photographs and the unit address let us price the work.

Is it fine to apply new sealant on top of old?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

What do you need from us to quote?

Send what you have, even a few photographs and rough lengths. We follow up with questions or a visit where needed.

Are your applicators CSCS-carded?

Yes. If you need card details for site access, tell us and we’ll confirm them with the quote.

How do you choose the sealant?

The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Can weather delay the job?

It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.

Cost factors for sealant joints

To price the job, we consider:

  • Location, for remote and island sites
  • Removal of failed or old sealant
  • The total length or number of joints
  • How accessible the joints are

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we will explain how it’s made up.

Details that help us quote

However big the job, these details speed things up:

  • Asbestos survey details if the building is older
  • What the building is and how it’s used
  • Any dates the work must fit around
  • Approximate linear metres or a joint schedule

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to ring 01277 525 020 or email us.

Keeping the joints sound

After handover, these steps help:

  • Look at the sealant around anything that has been moved or replaced
  • Make sure contractors see the asbestos survey before cutting out old mastic
  • Note dates and locations of sealant work for future planning
  • Put external and wet-area joints on a regular inspection round

New joints need their full cure time before they take water, cleaning or traffic. That time depends on the product, the temperature and the joint depth. Leaving the area closed until then keeps the bead neat.

An open joint in a food area or toilet collects dirt and moisture that cleaning can’t reach. Cleanability is something environmental health officers pay attention to, which makes sound joints worth keeping on top of.

Work for main contractors and building owners

We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.

If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.

Our process

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. For premises in Charleston, tell us about access times, shared entrances and any building rules, so the work can be phased and areas kept in use.

  1. You send photos, drawings or a list of the joints and areas involved.
  2. Next comes a diagnosis and a fixed quote.
  3. We plan around your site hours and access windows, phasing the work where areas have to stay in use.
  4. Failed sealant is cut out and each joint cleaned back to sound, dry faces.
  5. Backing and primer go in where needed, then the chosen sealant is applied and tooled.
  6. We walk the completed areas with you and sign them off under the 12-month guarantee.

Before we start on site

  • Move anything stored against the joints
  • Warn occupants and staff about the work
  • Send any specification or drawings in advance

Getting a fixed quote

For a fixed quote, speak to us on 01277 525 020 or send photos by email. Our quote form is another easy route.

Ask for a quote

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Accreditations

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