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

Facade and window perimeter sealing in Longformacus, Scottish Borders

We carry out facade joint and window perimeter sealing on commercial buildings in Longformacus and the surrounding area. Send details for a fixed quote.

  • Cold air coming in at window perimeters
  • Weathered facade joints that have lost their grip
  • New sealant peeling off old mastic
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m public liability

Facade sealing across Longformacus

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

About our facade sealing in Longformacus

Installing framed glazing systems isn’t part of our work. We handle the sealant joints that surround those elements: perimeter joints where frames meet the structure, panel joints and window perimeters. Most enquiries involve perimeter joints where frames meet the structure and gaps between rainscreen or cladding panels, across coping and flashing joints, shopfront frames and window and door perimeters. A single leaking joint is often how a building in Longformacus 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.

Construction around smaller Scottish places like Longformacus is often one-off schemes: a school, a health centre, a hotel extension or a few houses. The mastic still needs to suit exposed elevations and Scottish weather.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

Where
Longformacus (TD11)
Region
Scottish Borders
Guarantee
12 months on every job
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What sets the cost

These are the things that shape the price:

  • The total length or number of joints
  • How accessible the joints are
  • Backing rod, priming and other preparation
  • Phasing around occupants

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.

Sending details for a quote

Diagnosis starts before we arrive. Let us know:

  • The type of building and who uses it
  • Specification clauses that apply
  • Rough lengths or quantities, or drawings if you have them
  • How the joints are reached, and at what height

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.

Why act early in Longformacus

A few metres of new sealant compare well with replacing ceilings, linings or damaged stock. Water through a failed joint rarely stays where it starts, often turning up far from the joint. Buildings that aren’t in daily use, such as halls and seasonal premises, may let water in unnoticed, giving water time to get in. Resealing early avoids that.

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 appoint us

  • One number for every site we cover
  • Colours chosen to suit frames, cladding or finishes where possible
  • Products installed to the manufacturer’s instructions
  • Health and safety: CHAS accredited

See how commercial sealant jobs are priced and how we’re accredited.

General trades versus a specialist

Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Keeping the joints sound

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:

  • Check the asbestos register before old mastic is disturbed
  • Check that rainwater leaves the facade the way it was designed to
  • Note when each elevation was last resealed
  • Plan facade sealing alongside redecoration

Include facade joints in your planned maintenance inspections. Watch for splits, gaps at the edges, hardening and discolouration.

Use each reseal to correct the joint: the right width, backing rod and a sealant with enough movement capability. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Building and refurbishing in Longformacus

Projects in Longformacus follow Scotland’s building regulations, with the local authority acting as verifier. Our job is to seal to that specification. The east of Scotland, where Longformacus is, gets less rain than the west. Frost and condensation on frames and panels can still hold up external mastic on winter mornings. We programme around it with the site team.

On any site in or around Longformacus, the mastic follows the specification and the programme. Around Longformacus, as anywhere, a facade joint depends on its sizing, backing rod and preparation.

Longformacus is about 15 miles south-east of Haddington, in the Scottish Borders. Our applicators travel to Longformacus for work on facade joints, handled exactly as we handle every other area. 91 places across the Scottish Borders fall within our area, Longformacus among them. There’s a separate page for Edinburgh, roughly 29 miles from Longformacus.

Work on facade joints is covered throughout TD11, for business premises of every kind. Streets here include The Row, Duns Road and Gifford Road. Sites close to Longformacus are covered too, including Clockmill (5 miles south-east), Gavinton (6 miles south-east), Westruther (6 miles south-west), Preston (6 miles east) and Duns (6 miles east). Bigger towns within reach include Kelso (14 miles south), Earlston (14 miles south-west), Lauder (12 miles south-west) and Chirnside (11 miles east).

Around Longformacus

Nearby you’ll also find Langton Castle (4.5 miles south-east). Green spaces nearby include Twin Law.

Map of Longformacus © OpenStreetMap contributors

On site: what to expect

Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. Jobs near Longformacus are often grouped with others in the same area, to make the most of each trip. Tell us how flexible your dates are.

  1. Access, site rules and timing are settled with the client up front.
  2. Weather and temperature are checked against the product’s limits.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. Once signed off, the work carries our 12-month guarantee.

Before we start on site

  • For older buildings, check the asbestos register before work
  • Clear stock, furniture or equipment away from the joints
  • Tell us your opening times and when work is allowed

Getting a fixed quote

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

Ask for a quote

Advice

Work for main contractors and building owners

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Longformacus can sit alongside others in a wider programme across the Scottish Borders.

Your questions answered

Can the mastic package for our job in Longformacus follow the site programme?

Yes. The mastic is planned around your key stages. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Is Longformacus too far out for you?

No. Small places get the same service as large ones. We work across every Scottish council area. Where we can, we group nearby jobs to make the most of each trip.

Should we check old sealant for asbestos?

For older buildings, yes, check before work starts. The dutyholder holds the asbestos register. Suspect material is left alone until it has been tested.

How long before the joints can be used?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.

Who decides which product is used?

The specification comes first, if there is one. 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.

How long does a job like this take?

That varies with the scale of the job, but the work normally takes a day or two for a few elevations, and longer where access has to be moved around the building. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Is it okay to overlay old mastic?

No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely and the faces are cleaned before resealing. Nothing else gives a bond that lasts.

Accreditations

Trusted. Accredited. Insured.