Mastic sealant contractors in Duns
Sealant work in Duns for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- Brittle perimeter mastic across a building
- Patchy repairs in mismatched sealant
- Worn sealant at communal door frames
Need mastic sealing in Duns?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Mastic sealing in Duns
Owners and agents normally inherit a building’s mastic rather than choose it and it slowly wears out: it sits round windows and doors, along external joints and through communal areas. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. Site teams most often ask us about leaks at window and door perimeters and patchy repairs in mismatched sealant, across communal entrances and stairwells, window and door perimeters on blocks and external wall and movement joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Duns, preparation and product choice get the time they need.
Outside mastic in Scotland needs dry joints and the right temperature, so work around Duns is planned with the forecast. We agree a window with some flexibility.
We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.
- Location
- Duns (TD11)
- Region
- Scottish Borders
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
After the work
Regular inspection catches problems early. Specifically:
- Make it easy for occupiers to report draughts
- Prioritise elevations facing the weather
- Group repairs into a planned programme
- Protect low-level joints in entrances
If paintable sealant was used, decoration can follow once it has cured. Non-paintable silicone shouldn’t be painted over.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing.
How the job changes by surface
Window and door perimeters on blocks
We normally work through a block’s windows in a planned order. How each joint is reached is agreed at quote stage.
Commercial and mixed-use buildings
Tenants in commercial buildings need to keep trading, so we plan around them.
Blocks and managed buildings in Duns
Duns is in the east of Scotland, which is drier than the west. Frost and condensation on winter mornings can still delay outside mastic. Programmes allow for that
For a school such as Berwickshire High School, perimeter mastic on windows and doors is a holiday job. Trustees of buildings like Old Parish Church can bring frame and external mastic into a planned maintenance list. For owners of several units at places like Duns Industrial Estate (0.5 miles south of Duns), one programme can deal with frame and external mastic across the lot.
Duns is in the Scottish Borders. Commercial clients in Duns use us for work on mastic joints, as part of our coverage of the Scottish Borders. Duns is one of 91 places we cover in the Scottish Borders for mastic joints. There’s a separate page for Edinburgh, roughly 35 miles from Duns.
If you need mastic sealing in TD11, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Among the streets we cover are Market Square, Station Road and Murray Crescent. Access to Duns is via the A6105 and A6112 among other routes, so getting applicators and materials to site is simple. Close to Duns, our area also takes in Clockmill (1 mile west), Gavinton (1 mile south-west), Preston (2 miles north), Swinton (5 miles south-east) and Chirnside (5 miles east). Duns ranks among the main centres of the Scottish Borders, with offices, shops, schools and other public and commercial buildings.
Around Duns
Locally, jobs take us to sites close to The Royal Bar, among other places. A little further out are Knoll Hospital (less than half a mile south) and Jim Clark Motorsport Museum (under half a mile west). Open spaces near Duns include Duns Law and Duns Castle nature reserve.
Also in Duns
On site: what to expect
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a day or two for a single block, longer for an estate programme, and our waste is bagged and taken away as we go. Travel to smaller Scottish places like Duns is planned so the job is finished in one visit where possible, so photos, sizes and a full list matter. External joints need a dry spell as well.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
Preparing the site
- Warn occupants and staff about the work
- Make sure the joints can be reached
- Share the asbestos register for older buildings
Ask for a quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or use the quote form.
Advice
Why deal with it now?
Mixed repairs by different contractors leave a patchwork of products and colours. Resealing a whole building gives a consistent finish and one 12-month guarantee. For buildings near Duns, dealing with all the failing joints at once saves return trips. Send photos and we will quote for everything together.
The price depends on the quantity of joints, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.
Why us?
- Colours confirmed for the specified product
- A fixed quote before work starts
- Constructionline member for supplier checks
- Our applicators hold CSCS cards
Read how commercial sealant jobs are priced and our accreditations.
Your questions answered
Do you cover business parks and estates near Duns, such as Duns Industrial Estate?
Yes. We cover Duns and the area around it, including industrial estates, business parks and retail parks such as Duns Industrial Estate. Photos and a short description are enough for a first look.
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. Where we can, we group nearby jobs to make the most of each trip.
Can you seal joints high up on a block?
Every block is different. We agree access with you at quote stage so there are no surprises.
What if the old mastic contains asbestos?
Some mastics in pre-2000 buildings contain asbestos. We ask for the asbestos register or survey before work starts and suspect material is tested first.
What’s the quickest route to a quote?
There are four steps: send details, get a quote, we seal, guaranteed. The first step only needs photographs and a postcode.
Is any job too small?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
What do you charge?
It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote and we’ll price it properly.
Work for main contractors and building owners
Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules.
Doing it in-house
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.