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

Mastic Sealing in Garrabost

Sealant work in Garrabost for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, with a fixed quote first.

  • Complaints coming in block by block
  • Draught complaints from residents or tenants
  • Old repairs sealed over failed mastic
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Need mastic sealing in Garrabost?

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

Mastic sealing for commercial buildings in Garrabost

There isn’t one mastic for every joint on a building. Window perimeters and external joints often take a low-modulus neutral-cure silicone, while hybrid polymer sealants grip many materials and are often paintable. We’ll confirm the colours available for the specified product. We work on communal kitchens and washrooms, window and door perimeters on blocks and shopfronts below residential blocks, and the failures we are asked to look at most are complaints coming in block by block and brittle perimeter mastic across a building. A single leaking joint is often how a building in Garrabost first comes to us: we look at the rest while we are there and tell you what we find.

Around smaller places such as Garrabost, buildings managed by landlords and associations are often small groups of flats, sheltered housing and halls. Frames on exposed elevations are where mastic normally fails first.

Every job we finish is backed by a 12-month workmanship guarantee, in Garrabost as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Garrabost (HS2)
Region
Na h-Eileanan Siar
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

Owners, agents and contractors

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Garrabost can sit alongside others in a wider programme.

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

On site: what to expect

Tell us your site hours and access windows and we will plan around them. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Travel to smaller Scottish places like Garrabost is planned so the job is finished in one visit where possible, which is why we ask for photographs and a full list first. Outside work also needs a suitable weather window.

  1. We inspect each building and record the joints that have failed.
  2. You get a fixed quote, per block or for the whole programme.
  3. We agree the programme and dates with you.
  4. Old mastic is removed and the joint faces prepared.
  5. Joints are resealed and tooled.
  6. We check the finished work and confirm the guarantee.

Before we start on site

  • Point out any areas we must not close
  • Send any specification or drawings in advance
  • Point out parking and an unloading spot

Quotes

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Get a price

Advice

Block-wide mastic in Garrabost

Garrabost sits close to the coast, within about 1 mile. Sea-facing elevations take driven rain and salt, and their mastic shows it before the sheltered sides do, so it’s worth inspecting those sides more often. Being on an island, Garrabost means planning around ferry times as well as the weather. Send photos and addresses so every building can be covered on as few trips as possible.

Owners near Garrabost can renew frame and external mastic block by block on one programme. Churches, halls and community buildings such as Parish Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Garrabost is in Na h-Eileanan Siar. We cover commercial sites throughout Garrabost. Garrabost is one of 87 places in Na h-Eileanan Siar on our list for mastic joints.

We cover the HS2 postcode districts for mastic joints. Among the streets we cover are Graham Avenue and Claypark Road. Close to Garrabost, our area also takes in 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). Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so mention the location when you call the office on 01277 525 020 or email us.

Around Garrabost

Other landmarks nearby include Western Isles Hospital (5.7 miles west). For a walk, there’s Loch an Tiumpan.

Map of Garrabost © OpenStreetMap contributors

FAQs: Garrabost

Does a coastal location like Garrabost affect which sealant is used?

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.

Do you take on block-wide or estate-wide mastic work in Garrabost?

Yes. Planned programmes across a building, block or estate are a core part of this service. We can phase the programme to suit your budgets and notice periods.

How do you reach windows on upper floors?

Every block is different. We agree access with you at quote stage so there are no surprises.

Do you cover Garrabost?

Yes. We take on work across Garrabost.

Do you supply RAMS and insurance details?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.

Can weather delay the job?

It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Do you seal on top of existing sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

Doing it in-house

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Looking after the joints

Problems stay small when the joints are checked regularly. In particular:

  • Check sealant joints during planned building inspections
  • Prioritise elevations facing the weather
  • Have the asbestos survey to hand for older buildings
  • Encourage occupiers to report problems at frames

Keep records of when each building was resealed. That makes future programmes easier to plan and shows what was done.

Left open, joint edges in render, brick or frames can deteriorate. Once that happens, repairs come before resealing and the job grows.

Leave it or put it right?

Looking at mastic during planned maintenance costs little. Waiting until leaks appear means working under pressure and less choice about when. In Scotland, wind-driven rain finds a failed joint quickly, so it’s worth renewing joints around Garrabost before they leak.

The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote once you have the details.

Why clients in Garrabost choose us

  • One contact handling all your sites
  • Work to your specification and the manufacturer’s guidance
  • CHAS accredited contractor
  • Public liability insurance in place

Read what affects the cost or how we’re accredited.

Honest limits

Not every problem is a sealant problem, and we’re upfront when that’s the case. It won’t fix:

  • Water coming in from the roof or rainwater goods
  • Leaks through the frame itself rather than the perimeter
  • Glazing that needs replacing

If in doubt, call the office on 01277 525 020 or email us and we’ll say what we think.

Surfaces we seal

  • Shopfronts below residential blocks
  • External wall and movement joints
  • Window and door perimeters on blocks
  • Communal kitchens and washrooms
  • Communal entrances and stairwells
  • Balcony and threshold joints
Accreditations

Trusted. Accredited. Insured.