The Mastic Doctor team standing beside their branded vans outside an office building
Na h-Eileanan Siar · Scotland

Garrabost facade sealing

Sealant work in Garrabost for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, quoted at a fixed price.

  • Patch repairs that keep failing
  • Cold air coming in at window perimeters
  • Cladding panel joints that have opened up
1
Send details
Send the specification, photos or a marked-up plan.
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
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Facade sealing in Garrabost

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

About our facade sealing in Garrabost

Water ingress at window frames is a frequent reason facilities managers contact us. Very often the perimeter bead has cracked or lost its grip, though that isn’t the only cause. If the evidence points away from the sealant, we say so before quoting. We work on window and door perimeters, perimeter joints where frames meet the structure and stone and brick facade joints, and the usual reasons a site gets in touch are damp patches beside frames after rain and failed seals around shopfront and entrance frames. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Garrabost, that means joint design, primers and backing rod as standard.

Construction around smaller Scottish places like Garrabost 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.

We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Garrabost (HS2)
Wider area
Na h-Eileanan Siar
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

Why it’s worth doing now in Garrabost

The longer a failed joint is left, the more the substrate suffers: wet edges break down, so repairs may be needed before resealing. Early action keeps it simple. 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.

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What you get with us

  • Products installed to the manufacturer’s instructions
  • RAL and finish matching where the product range allows
  • Our applicators hold CSCS cards
  • Fixed quotes based on photos, drawings or a visit

Read how commercial sealant jobs are priced or how we’re accredited.

Looking after the joints

Keep the joints in good shape with a few simple steps:

  • Brief window cleaners about newly sealed joints
  • Insist on a full cut-out when joints are renewed
  • Clear debris that holds water against joints
  • Combine resealing with other works that need access

Record the sealant type and date on the building file. Future work can then match the product and colour without guesswork.

In pre-2000 buildings, check the asbestos register before old sealant is cut out. Older sealants can contain asbestos, and work stops until it’s tested if it’s suspected.

Quoting for work in Garrabost

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • The size and state of each joint
  • Travel to remote or island sites
  • How accessible the joints are
  • Phasing around occupants

We don’t publish prices, since every building and every scope is different. Call for a quote.

What we need to price the job

It doesn’t need to be a full survey. These details are enough to start:

  • Your programme or deadline
  • Access details, including height
  • Whether an asbestos survey exists
  • What the building is and how it’s used

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.

Contractors’ notes for Garrabost

Garrabost is within about 1 mile of the coast. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, so we check the specified product suits the exposure before the first bead. Garrabost is on Scotland’s wetter western side. External mastic needs dry spells, with internal work ready to fill the wet days.

Sites around Garrabost get mastic sealed to the drawings and the programme, nothing improvised.

Garrabost is in Na h-Eileanan Siar. Commercial clients in Garrabost can call on us for facade joints. Our Na h-Eileanan Siar coverage takes in 87 places, large and small.

Work on facade joints is covered throughout HS2. If your site is on Graham Avenue and Claypark Road or close by, send details and we’ll quote for facade joints. If your building is just outside Garrabost, we cover Pabail Uarach (1 mile south-east), Sulaisiadar (1 mile north-east), Lower Bayble (1 mile south), Knock (2 miles south-west) and Na h-Eileanan an Iar (2 miles south-west). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.

Local landmarks in Garrabost

A little further out are Western Isles Hospital (5.7 miles west). Open spaces near Garrabost include Loch an Tiumpan.

Map of Garrabost © OpenStreetMap contributors

From enquiry to sign-off

Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us. Tell us who will meet us and how to get in at your building near Garrabost. We’ll confirm the plan with the fixed quote.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  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

  • Flag any permit to work we will need
  • Warn occupants and staff about the work
  • Share your working hours and any access restrictions

Get a fixed quote

Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, call 01277 525 020 or send details through our quote form.

Ask for a quote

Advice

FAQs: Garrabost

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

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.

Is a hospital such as Western Isles Hospital somewhere you can work?

Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is the work guaranteed?

Yes. Workmanship is guaranteed for 12 months on every job.

Does the weather affect the work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

Is old mastic on our building likely to contain asbestos?

In older non-domestic buildings, old sealant can contain asbestos. The dutyholder’s asbestos register should be checked first, and if anything is suspected, we stop until it’s tested. Removal of asbestos isn’t something we do.

Which sealant do you use on facades?

Most facade and window perimeter joints take a low-modulus neutral-cure silicone. Some joints call for hybrid, PU or polysulphide instead.

Are you CHAS accredited and on Constructionline?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

When something else is needed

Being straight saves everyone time. Fresh joints won’t solve:

  • Specialist high-level access methods
  • Joints too narrow for the movement they take, which need redesign
  • Damaged frames that need replacing

If in doubt, phone 01277 525 020 or use the quote form and we will say what we think.

What we seal

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

Signs you need facade sealing in Garrabost

Not every failure is in the sealant: crumbling render, spalling concrete or flaking paint take the sealant with them. We tell you when the edges need repairing before resealing.

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

  • Cladding panel joints that have opened up
  • Draughts around frames and panels
  • Water coming in around window frames
  • Facade joints cracked through the middle

For a contractor working at a hospital such as Western Isles Hospital (5.7 miles west of Garrabost), perimeter and facade sealing is planned around patients and deliveries.

Before you book anyone

  • What the guarantee covers, and for how long
  • Can the work be phased to keep areas open?
  • Their public liability cover
  • How joint depth will be controlled

Questions to ask before you appoint anyone

Accreditations

Trusted. Accredited. Insured.