
Mastic sealing for building owners and managing agents in Cuidhir, Na h-Eileanan Siar
Mastic sealing for building owners, managing agents and housing associations across Cuidhir, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- A mix of products and colours from past repairs
- Leaks at window and door perimeters
- Draught complaints from residents or tenants
Mastic sealing across Cuidhir
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle mastic sealing in Cuidhir
On a residential block, the work happens around people’s lives. Dates, areas and the order of work are agreed with you in advance so you can let residents know what is happening. Entrances and stairwells are kept in use throughout. Site teams most often ask us about repeated reactive repairs to the same buildings and a mix of products and colours from past repairs, on balcony and threshold joints, shopfronts below residential blocks and window and door perimeters on blocks. A specialist sealant contractor works differently from a general builder: on jobs in Cuidhir, preparation and product choice get the time they need.
Around Cuidhir, outside mastic waits for dry weather and the right temperature. Programmes allow for the weather.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

- Where
- Cuidhir (HS9)
- Region
- Na h-Eileanan Siar
- Guarantee
- A 12-month guarantee
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Your questions answered
Can you quote for mastic across several buildings in and around Cuidhir?
Yes, we quote for single buildings and for programmes across several blocks. Residents are given notice through you, and the work moves building by building.
Can you take on a job in Cuidhir, on the island?
Yes. Our area covers all of Scotland, cities, towns and islands alike, and that includes island locations such as Cuidhir. Ferry times and the weather set the plan, so we ask for photographs and a full list first.
Does weather matter for sealant work?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Do you work for managing agents and housing associations?
We do. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords, and we quote building by building or as a programme.
How do you handle work on occupied blocks?
We plan around people living or working in the building. Dates and areas are agreed with you so residents or tenants can be told, and entrances stay in use.
Will you just go over the old sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
What guarantee do you give on resealing?
Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.
Diagnose, treat, sign off
When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work typically takes one or more days per building, depending on the joint lengths and the access. Tell us who will meet us and how to get in at your building near Cuidhir. We’ll confirm the plan with the fixed quote.
- Each block or building is walked and the failed joints recorded with the likely cause.
- You get a fixed quote, priced per building where that helps your budgeting.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
What we need from you
- For older buildings, check the asbestos register before work
- Agree which areas must stay open
- Confirm the product named in the specification
Getting a fixed quote
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.
Advice
Do you need mastic sealing in Cuidhir?
Topping up old mastic is a common shortcut. New silicone has nothing to grip on old silicone and the repair soon fails.
These are often picked up first by site or facilities staff:
- Cracked, hardened mastic round windows on a block
- Damaged joints in communal entrances and corridors
- Draughts at frames across a block
- Patchy repairs in mismatched sealant
Around Cuidhir, a planned programme renews failed mastic across a building or estate in one go.
What your quote should include
- How the existing material will be dealt with
- Proof of insurance
- Which product they’ll use, and why it suits the joint
- Do they follow the manufacturer’s priming guidance?
Places near Cuidhir
Also in Cuidhir
What sealant work can’t fix
A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be any of the following:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Misted or failed double-glazed units
- Leaks from above rather than through a joint
If you are not sure, just call 01277 525 020 or email us and we’ll give you a straight answer before you book.
Where we work in Cuidhir
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Communal entrances and stairwells
- Balcony and threshold joints
- Communal kitchens and washrooms
- External wall and movement joints
Why it’s worth doing now in Cuidhir
Sealing over failed mastic looks tidy for a while. It won’t grip the old sealant and soon comes away. Cutting out and resealing properly does it once. Exposed buildings in Scotland take a lot of weather, and for a smaller place like Cuidhir, a repair visit takes planning, so it’s better to act early.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Why choose Mastic Doctor in Cuidhir
- Work carried out by CSCS-carded applicators
- One phone line for London, the South East and Scotland
- A range of standard colours, depending on the product
- Fixed quotes based on photographs, drawings or a visit
Take a look at what affects the cost and our accreditations.
Surface by surface
External movement joints
External movement joints take up expansion and contraction. Once that sealant goes, rain can reach the wall.
Communal areas
We keep entrances and stairs open throughout. Work is planned in sections.
Planned mastic for Cuidhir portfolios
Cuidhir sits close to the coast, within about 2 miles. 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. Island jobs, Cuidhir among them, are planned around the ferry and the forecast. Send photos and addresses so every building can be covered on as few trips as possible.
Older community buildings, Cuier Parish Church and Churchyard among them, often have frames of mixed ages whose mastic varies.
Cuidhir is in Na h-Eileanan Siar. Any commercial site in Cuidhir is covered, for single jobs and planned programmes alike. Our Na h-Eileanan Siar coverage takes in 87 places.
Anyone looking for mastic sealing in HS9 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Rathad na Ceardaich and Cuithir or nearby, we can quote for mastic joints. We also cover Brèibhig (3 miles south), Ceann Tangabhal (3 miles south), Eòlaigearraidh (3 miles north-east), Castlebay (3 miles south) and Bàgh a'Chaisteil (3 miles south) for mastic joints. Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so give the site location in your enquiry.
What’s near Cuidhir
Nearby you will also find St Brendan's Hospital (3.5 miles south) and Museum Bharraigh Agus Bhatarsaidh (3.2 miles south). For a walk, there’s Ben Cliad.
Owners, agents and contractors
Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.