
Construction and new-build mastic in Garrabost, Na h-Eileanan Siar
Mastic packages for new-build and refurbishment projects in Garrabost and across Na h-Eileanan Siar. CHAS accredited and fully insured, with a 12-month guarantee.
- Window and door perimeters that won’t pass inspection
- Internal caulk splitting as the building dries out
- Different trades sealing to different standards
Construction mastic across Garrabost
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our construction mastic in Garrabost
Mastic is often where a new building first shows its quality to the client. A smeared bead round a window or a gap behind a worktop ends up on the snag list, and every return visit costs time. Our aim is joints that pass at the first inspection, area by area through the programme. Most enquiries involve a mastic package split between trades with no clear owner and failed sealant in an existing building being refurbished, on internal decorators’ caulk, brick and block movement joints and sanitary and kitchen joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Garrabost is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
External sealing around Garrabost depends on dry faces and the right temperature. A little flexibility in the programme lets external joints go in on suitable days.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

- Location
- Garrabost (HS2)
- Region
- Na h-Eileanan Siar
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Building and refurbishing in Garrabost
Garrabost is within about 1 mile of the coast. Coastal exposure means perimeter and cladding joints work harder than on an inland job, so joint design, primers and product choice deserve extra care. Island jobs, Garrabost among them, are planned around the ferry and the forecast. We need drawings and a programme early so materials come on the right crossing.
On a healthcare site such as Western Isles Hospital, 5.7 miles to the west of Garrabost, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. Sites around Garrabost get mastic sealed to the drawings and the programme, nothing improvised.
Garrabost is in Na h-Eileanan Siar. Looking for construction mastic in Garrabost? We can help, as we do across Na h-Eileanan Siar. 87 places across Na h-Eileanan Siar fall within our area, Garrabost among them.
Commercial sites across HS2 are covered for mastic packages. For a building on Graham Avenue and Claypark Road or nearby, send details and we will quote for mastic packages. We also 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) for mastic packages. For island and remote sites, travel and materials need planning ahead, so the full address helps from the start.
Near you in Garrabost
A little further out are Western Isles Hospital (5.7 miles west). For a walk, there’s Loch an Tiumpan.
How the job changes by surface
Fire-rated sealant where specified
Not every penetration suits a sealant. Other products are used for some services and gaps, and we’ll tell you if the detail calls for something else. Record requirements are agreed with the quote.
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move.
Doing it in-house
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Places near Garrabost
What else we do in Garrabost
Looking after the joints
Once the work is signed off, a little attention goes a long way:
- Share drawings and the specification as soon as possible
- Protect sealed areas from following trades
- Ask cleaners to use soft cloths around fresh sealant
- Check frame gaps are within the sealant’s range before sealing
Expect some settlement in the first months. The right product in each joint copes with that. We can advise if a joint needs a different product.
In wet areas, a weak sanitary joint shows up quickly once the building is occupied. Leaks behind showers and basins damage finishes and floors, and the repair falls into the defects period. Proper preparation, with the right silicone first time, keeps it off the defects list.
How a job runs
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. 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.
- First we take quantities off the drawings and read through the specification.
- You receive a fixed quote listing scope, products and phasing.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- We seal each plot or floor as it’s released to us.
- Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
- Snags are cleared before handover and completed areas carry our 12-month guarantee.
Preparing the site
- Tell us which areas need to stay in use
- Move anything stored against the joints
- Share your working hours and any access restrictions
Getting a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or email us with what you know.
Advice
Honest limits
Some faults sit outside our scope, and we point that out rather than sealing over them:
- Faulty frames rather than failed sealant
- Specifying the product where the designer hasn’t
- Oversized gaps that need packing or adjustment by others
Not sure which it is? You can ring 01277 525 020 or email us and we will tell you honestly.
Where we work in Garrabost
- Brick and block movement joints
- Window and door perimeters
- Sanitary and kitchen joints
- Floor and skirting junctions
- Cladding and panel joints
- Internal decorators’ caulk
Questions about Garrabost
Do you work on the island where Garrabost is?
Yes. Every Scottish council area is within our area, and that includes island locations such as Garrabost. Island work is planned around ferry crossings and the weather, so photographs and a full list before we travel are essential.
Do you take on work at healthcare sites like Western Isles Hospital?
Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.
How do you deal with asbestos in old sealant?
The duty to manage asbestos sits with the building’s dutyholder, so we will ask for the register before work on an older building. If anything suspect turns up, we stop until it’s tested.
Do you work to architects’ specifications?
Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.
Do you offer coloured sealant?
That depends on the product specified. Some ranges are wide, others limited, so we’ll confirm the colours available for the specified product with the quote.
Can you work plot by plot or floor by floor?
We follow the trades through the building. Areas are sealed as they’re released by the site team, and we’ll raise anything that holds the work up.
How do I request a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photos and a postcode.
Leave it or put it right?
Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple. Buildings that aren’t in daily use, such as halls and seasonal premises, may let water in unnoticed, so a failed joint has time to cause damage. Resealing early avoids that.
What a job costs comes down to how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote once you have the details.
Why choose Mastic Doctor in Garrabost
- One number for every site we cover
- CSCS-carded applicators
- Constructionline member
- Work to your specification and the manufacturer’s guidance
Take a look at our cost guide and how we’re accredited.