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

Duns commercial sealant contractors

Looking for commercial sealant contractors in Duns? It’s simple: send details, get a quote, we seal, guaranteed.

  • Messy, uneven beads from earlier work that let the building down
  • Mouldy silicone around WCs, urinals and vanity tops
  • 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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Commercial sealant contractors for businesses in Duns

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 Duns

Resealing over the top is a false economy we come across often. Fresh sealant won’t stick to the old bead underneath, so the top layer lifts, holds water and hides what’s going on. By the time it shows, there can be two or three layers to cut out.

Any of the following is a good reason to get the joints checked over:

  • Frame mastic that has hardened and come away from the wall
  • Earlier reseals applied straight onto the failed bead
  • Expansion joints with the sealant torn out
  • Damp patches where an external joint has failed

Refits at hotels like Barniken Hotel, under half a mile east of Duns, bring joints at vanity tops, bars and reception desks that guests see every day.

What to look for in a quote

  • Proof of insurance
  • How the joint faces will be prepared and primed
  • Who will actually carry out the work
  • Is the sealant right for the movement and the substrate?

Choosing a commercial sealant contractor

Sealant applicators in Duns

Pricing a commercial reseal is a short process. Our quote form takes photographs, drawings or a schedule of the areas. If the joints need seeing in person, a site visit comes first, and a fixed quote for the agreed scope follows. Most enquiries involve frame sealant that has cracked, shrunk or pulled away and wall and floor joints that have lost their seal, on kitchen worktops and splashbacks, movement joints in walls and floors and window and door perimeters. A single leaking joint is often how a building in Duns first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

A lot of what we do in Duns is replacing sealant that has done its years: hardened, cracked or shrunk away from the faces, and letting water or dirt in.

For work in and around Duns, we’d rather do everything on one trip, so it helps to have photos and a full list first. Several jobs nearby can also be put together.

We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.

Place
Duns (TD11)
Wider area
Scottish Borders
Cover
12 months on our workmanship
Price
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Honest limits

Honesty saves time and money. New sealant won’t cure:

  • Leaks from pipework, wastes or valves (that’s plumbing)
  • Misted, cracked or failed glazing units (a glazier’s job)
  • Leaking roofs, gutters or flat-roof membranes (those need a roofer)

Not sure which it is? You can ring 01277 525 020 or send details through our quote form and we’ll tell you honestly.

Where we work in Duns

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

Owners, agents and contractors

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

How a job runs

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. For work around Duns, we aim for one trip, so photos, sizes and a full list matter. External joints need a dry spell as well.

  1. Site photos, drawings or a visit tell us what’s there and how it has failed.
  2. You get a fixed quote covering removal, preparation and the new sealant.
  3. We agree the order of work, access windows and site hours with you.
  4. The failed sealant comes out and the faces are prepared, with primer where required.
  5. Backing goes in, the new sealant is laid and tooled, and the area is left neat.
  6. We hand back each area with its cure time and our 12-month guarantee.

Getting the site ready

  • Agree which areas must stay open
  • Send asbestos survey details if the building is pre-2000
  • Confirm the product named in the specification

Quotes

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.

Get a quick quote

Advice

Commercial sealant contractors in Duns: the local picture

There are several hotels within about 2 miles of Duns. A hotel refurbishment is full of joints that guests will see, and a matched colour keeps them discreet. Being in the east of Scotland, Duns gets less rain than the west coast. Cold snaps still affect when external joints can be sealed. We plan external frontages and frames around that

If you run a unit on an estate such as Duns Industrial Estate, 0.5 miles to the south of Duns, the trade counter, offices and staff facilities have joints to look after as well as the warehouse.

Duns is in the Scottish Borders. Anywhere in TD11, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 91 places in the Scottish Borders. We also cover Edinburgh, around 35 miles from Duns.

We cover the TD11 postcode districts. Streets here include Market Square, Station Road and Murray Crescent. You’ll find Duns on or near the A6105 and A6112, so getting applicators and materials to site is simple. We also cover Clockmill (1 mile west), Gavinton (1 mile south-west), Preston (2 miles north), Swinton (5 miles south-east) and Chirnside (5 miles east) for sealant joints. Duns ranks among the main centres of the Scottish Borders, with offices, shops, schools and other public and commercial buildings, and we cover them all.

Around Duns

Locally, jobs take us to sites close to The Royal Bar, among other places. Other landmarks nearby include Knoll Hospital (less than half a mile south) and Jim Clark Motorsport Museum (less than half a mile west). Green spaces nearby include Duns Law and Duns Castle nature reserve.

Map of Duns © OpenStreetMap contributors

Aftercare for building managers

Regular inspection catches problems early. In particular:

  • Keep a record of which joints were resealed and when
  • Keep barriers up until the new sealant has cured
  • Check sealant as part of routine building inspections
  • Have extract fans checked so wet areas dry out

Put sealant on the planned maintenance checklist. Regular checks pick up small failures before they become leaks, especially on exposed elevations and in washrooms. Should something look amiss, you can call the office on 01277 525 020 or email a schedule or drawings and send a picture.

Tenants and staff spot black or split sealant quickly, and in a hotel, office or shop it makes the whole space look neglected. Planned replacement saves fielding the same complaint again and again.

Why act early in Duns

On many buildings the mastic was done by whichever trade was on site. A specialist applicator takes care of product choice, joint depth and preparation, and they’re where most failures begin. It shows over the following seasons rather than at handover. Around smaller places like Duns, halls, stores and seasonal buildings may not be checked often, giving water time to get in. Early resealing prevents it.

The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote when you are ready.

Why clients in Duns choose us

  • Health and safety: CHAS accredited
  • Fully insured, including public liability cover
  • Matching to RAL references, product permitting
  • Coloured sealants to suit the setting, where available

Take a look at how commercial sealant jobs are priced or our accreditations.

FAQs: Duns

Is Duns off your patch?

Not at all: smaller places are covered as well as towns. Our area covers all of Scotland, cities, towns and islands alike. We plan jobs in smaller places so return trips are kept to a minimum.

Does your area include sites such as Duns Industrial Estate, near Duns?

Yes. Estates, retail parks and business parks around Duns, Duns Industrial Estate among them, are all within reach. A few photographs and the unit address let us price the work.

Are you CHAS accredited?

Yes. We are CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.

How long will the new sealant last?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

Will the building have to shut during the work?

We phase the work so parts of the building stay open. We plan around the site hours and access windows you give us.

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

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

How do you choose the sealant?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Accreditations

Trusted. Accredited. Insured.