Mastic sealant contractors in Na Gearrannan
Mastic sealing for building owners, managing agents and housing associations in Na Gearrannan and across Na h-Eileanan Siar. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Old repairs sealed over failed mastic
- Occupiers reporting cold air round windows
- Complaints coming in block by block
Need mastic sealing in Na Gearrannan?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Mastic sealing in Na Gearrannan
Blocks are lived in, so access and disruption have to be thought through. 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 while we work. Site teams most often ask us about the same joint failures repeated across a portfolio and brittle perimeter mastic across a building, across balcony and threshold joints, window and door perimeters on blocks and shopfronts below residential blocks. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Na Gearrannan, preparation and product choice get the time they need.
For buildings around Na Gearrannan, we group the work to keep travel and visits down. A list of addresses and photos lets us quote for them together.
We stand by our work with a 12-month guarantee. That covers our preparation and application, and if something we did falls short, we return to it.
- Location
- Na Gearrannan (HS2)
- Region
- Na h-Eileanan Siar
- Cover
- 12 months on every job
- Quotes
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Different surfaces, different methods
Window and door perimeters on blocks
We normally work through a block’s windows in a planned order. Access is agreed with you before the quote is fixed.
External movement joints
Movement joints are cleaned out, backed with rod and resealed with a sealant of the right movement class.
Mastic sealing in Na Gearrannan: the local picture
Na Gearrannan 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. For an island location such as Na Gearrannan, work is planned around ferry crossings and the weather. Send photographs and addresses so every building can be covered on as few trips as possible.
Around Na Gearrannan, a planned programme renews failed mastic across a building or estate in one go.
Na Gearrannan (Gaelic: Garenin) is in Na h-Eileanan Siar. We cover commercial sites throughout Na Gearrannan. Our Na h-Eileanan Siar coverage takes in 87 places.
If you need mastic sealing in HS2, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Close to Na Gearrannan, our area also takes in Carloway (1 mile south-east), Shawbost (4 miles north-east), Breasclete (5 miles south), Bragar (6 miles north-east) and Barabhas (10 miles north-east). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.
Around Na Gearrannan
A little further out are Gearannon Blackhouse Village (less than half a mile north-west). Green spaces nearby include Loch Langavat.
On site: what to expect
Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. The work itself usually takes a day or two for a single block, longer for an estate programme, and we clear our waste as we work. Where we can, we combine work around Na Gearrannan with other jobs nearby, to make the most of each trip. Let us know if your dates have any give.
- We inspect the joints, building by building, and record what has failed and why.
- You get a fixed quote, priced per building where that helps your budgeting.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
Getting the site ready
- Send your site hours and access windows
- Send asbestos survey details if the building is pre-2000
- Send any specification or drawings in advance
Getting a fixed quote
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
Advice
Why act early in Na Gearrannan
Resealing ahead of leaks keeps it to a maintenance task. After water has got in, there may be damp, damaged plaster or decoration to put right too and occupiers notice. Renewing every failing joint on one visit is the sensible approach for a place like Na Gearrannan. Photos of each area help us quote the whole job.
There’s no price list, since every building and every scope is different. Call for a quote.
What you get with us
- Our applicators hold CSCS cards
- Work to your specification and the manufacturer’s guidance
- One phone line for London, the South East and Scotland
- Standard and matched colours in many product ranges
Read how commercial sealant jobs are priced and how we’re accredited.
What we can’t put right
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Masonry that has broken away beside the joint
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Roof leaks, gutters or failed flashings that aren’t sealant joints
If you’re not sure, just call 01277 525 020 or use the quote form and we will give you a straight answer.
Joints and surfaces we work on
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Balcony and threshold joints
Signs you need mastic sealing in Na Gearrannan
Frames, panels and masonry expand and contract through the year, and the sealant takes up that movement. If the joint or the product wasn’t suited to the movement, it splits long before it should.
Common reasons buildings call us in:
- Leaks at window and door perimeters
- Worn sealant at communal door frames
- The same joint failures repeated across a portfolio
- Draught complaints from residents or tenants
Wherever your building is in or near Na Gearrannan, we look at the whole elevation before quoting, so you know what needs doing now.
Questions to ask before you book
- Whether their applicators hold CSCS cards
- Health and safety accreditation such as CHAS
- Their approach to joint depth and backing
- Will failed sealant be removed rather than covered?
What else we do in Na Gearrannan
Site staff or a sealant specialist?
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
Questions we are asked in Na Gearrannan
Is Na Gearrannan inside the area you cover, given it’s on an island?
Yes. Islands are part of our area, Na Gearrannan included. We group island work where we can and plan around the crossings.
Can being near the sea in Na Gearrannan affect the sealant we need?
It can. Coastal exposure works external joints harder than inland weather. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.
Is mastic sealing guaranteed?
A 12-month guarantee covers our work. It applies to our workmanship rather than damage or problems with the frames.
Do you work with property factors and landlords?
Yes. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work, and we quote building by building or as a programme.
Will you come and look before quoting?
Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit before quoting.
Can you reseal a whole block or estate?
Block-wide and estate programmes are common. The quote can be split however suits your budgeting.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.