The Mastic Doctor team standing beside their branded vans outside an office building
Argyll and Bute · Scotland

Facade Sealing contractors in Portnahaven

Facade joint and window perimeter sealing on commercial buildings in Portnahaven and across Argyll and Bute. CHAS accredited and fully insured, with a 12-month guarantee.

  • Leaks at window and door perimeters
  • Failed sealant on precast panel joints
  • Patch repairs that keep failing
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Facade sealing near Portnahaven

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

About our facade sealing in Portnahaven

Some clients need every window on a block resealed; others need a few leaking frames sorted. The approach doesn’t change with the size: cut out, clean, back, prime where needed and seal. A 12-month guarantee applies to our workmanship. If you have weathered facade joints that have lost their grip and staining on stone next to old sealant, we can put it right. Facilities teams, main contractors and managing agents in Portnahaven tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

In smaller places such as Portnahaven, building work tends to be single schemes rather than big developments. Exposed elevations in Scotland put facade and perimeter joints to work from day one, so the sealant choice matters.

Work we carry out in Argyll and Bute comes with a 12-month guarantee. Should something we installed fail, speak to us on 01277 525 020 or email the details over and we’ll come back to it.

Place
Portnahaven (PA47)
Wider area
Argyll and Bute
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Doing it in-house

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

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.

Surface by surface

Precast concrete panels

Concrete edges can be dusty or weak. We clean back to sound material and flag edges that need repair first.

Coping and flashing joints

Not every coping or flashing leak is a sealant problem. We tell you if the fix is a roofing or metalwork job rather than a reseal.

Our process

A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself typically takes anything from a single day to several weeks, depending on joint lengths, access and the weather, and our waste is bagged and taken away as we go. Jobs near Portnahaven are often grouped with others in the same area, to make the most of each trip. Let us know if your dates have any give.

  1. We start with photos, drawings or a visit to see the joints and agree access.
  2. We confirm the joint type, movement and the specified product.
  3. The existing bead comes out in full.
  4. Primer goes on where the product data asks for it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

What we need from you

  • Arrange parking or a loading space
  • Send asbestos survey details if the building is pre-2000
  • Tell us which areas need to stay in use

Ask for a quote

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.

Get a quick quote

Advice

What happens if it’s left?

Resealing a few window perimeters is a small job; repairing water-damaged interiors and fixings is not. Leaks travel along the structure, so the real damage is often some distance away. Renewing every failing joint on one visit is the sensible approach for a place like Portnahaven. Photos of each area help us quote the whole job.

The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site rules also count.

Why us?

  • Constructionline member for supplier checks
  • Colour agreed before work starts
  • Sealing commercial buildings since 2005
  • Health and safety: CHAS accredited

See our cost guide and our accreditations.

Questions about Portnahaven

Will you fit the mastic around our build programme in Portnahaven?

Yes, we work to the programme and the sequence the site sets. Let us know which documents your site asks for, and we will confirm them alongside the quote.

Is Portnahaven off your patch?

Not at all. Portnahaven is within our area. Every Scottish council area is within our area. Good photographs up front let us bring everything on the first visit.

Is the work guaranteed?

Yes, for 12 months. If our installation fails in that time, we return and fix it.

How long does a typical visit take?

It depends on the scope, but the work typically takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. Larger or phased jobs take longer, and we will give you a timescale with the quote.

How do we ask for a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, let us know and we’ll send them with the quote.

What do you charge?

That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote.

Mastic packages on Portnahaven sites

Portnahaven lies within about 1 mile of the sea. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, and the sealant, primer and backing need choosing with that in mind. Scotland has its own building regulations, and in Portnahaven warrants come from the local authority verifier. The mastic follows the specification that goes with the warrant.

Window perimeters and facade joints around Portnahaven need correct width, depth and backing rod as much as a neat finish.

Portnahaven (Gaelic: Port na h-Abhainne) is in Argyll and Bute. Commercial clients in Portnahaven use us for work on facade joints, as part of our coverage of Argyll and Bute. Across Argyll and Bute, 124 places are covered, Portnahaven among them.

Postcode districts covered here: PA47 for facade joints. For a building on High Street, Shore Street and Church Street or nearby, we can quote for facade joints. Nearby places we also cover include Bun Othan (1 mile south), Port Charlotte (6 miles north-east), Bowmore (10 miles north-east), Imeraval (12 miles east) and Port Ellen (13 miles east) for facade joints. Remote and island addresses take more planning, from travel and ferries to the weather, so mention the location when you call the office on 01277 525 020 or send details through our quote form.

Landmarks near Portnahaven

The countryside around Portnahaven includes Beinn Tart a' Mhill.

Map of Portnahaven © OpenStreetMap contributors

When it isn’t the sealant

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Arranging specialist high-level access, which is planned with the client
  • Installing or repairing glazing systems
  • Joints whose design needs changing by the specifier

If in doubt, give us a call on 01277 525 020 or send photos by email and we will say what we think.

Surfaces we seal

  • Shopfront frames
  • Coping and flashing joints
  • Stone and brick facade joints
  • Cladding panel joints
  • Perimeter joints where frames meet the structure
  • Window and door perimeters

Common problems we fix in Portnahaven

Adhesive failure, where the sealant peels away from one face, typically comes from poor preparation. Contamination, moisture or skipping the primer the maker specifies leave a weak bond, and movement soon pulls it away.

Typical triggers for a call:

  • Staining on stone next to old sealant
  • Facade joints cracked through the middle
  • New sealant peeling off old mastic
  • Gaps between rainscreen or cladding panels

For contractors building in or near Portnahaven, we seal to the drawings, the specification and the programme.

Questions to ask before you book

  • Whether their applicators hold CSCS cards
  • Their public liability cover
  • What the guarantee covers, and for how long
  • How they handle RAMS and site documents

Choosing a commercial sealant contractor

Accreditations

Trusted. Accredited. Insured.