Na h-Eileanan Siar · Scotland
New-build mastic & snagging in Stornoway, Na h-Eileanan Siar
Plot mastic for developers and snagging failed sealant in new homes for householders, landlords and businesses in Stornoway. Fully insured, ARBOMaster approved and guaranteed for a year.
- Skirting joints opening in the first winter
- Messy sealant that spoils new finishes
- Joints pulling apart as timber shrinks
Why deal with it now?
Small cosmetic gaps can wait for the house to settle, but water getting through cannot. Not sure whether yours can wait? You can drop us a line at info@mrmastic.co.uk with a few pictures and we will give you a straight answer. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why choose Mr Mastic in Stornoway
- Tidy, careful work
- Every job guaranteed for a year
- Trusted Arbo and Everbuild sealants
- Homes, businesses and hotels
Take a look at what affects the cost and customer reviews.
How we handle new build mastic in Stornoway
Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the sealant actually sticks rather than sitting on a layer of grit. We’re often asked to deal with cracked caulk along new skirting and smeared, uneven beads picked up at snagging, across show homes, bathrooms & en suites and windows & doors.
Many newer homes in Scotland are timber-framed and settle as they dry out, which shows as gaps at skirtings and floor joints. Older stone-built homes, meanwhile, often have timber floors that move with the seasons.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Stornoway (HS1, HS2)
- Wider area
- Na h-Eileanan Siar
- Cover
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Aftercare tips
After the cure time, these simple habits help:
- Follow the cure time we give you
- Watch for new gaps as the house dries out
- Act quickly if a seal starts to leak
- Resist patching a failed seal with a tube from the DIY shop
Avoid standing on the rim of the bath or the edge of the tray while the sealant cures. Report any movement in a bath or tray.
Report failed sealant to the builder while you’re in the snagging period. Once it ends, the repair may be down to you, so raise it early.
What we do, step by step
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours in a single home. For a place like Stornoway, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each joint is checked for movement before we start.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
How to prepare
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Mention if the joints have been sealed before
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.
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What we are called out for in Stornoway
Sealant applied onto damp surfaces does not bond well. On a busy site, joints are not always given time to dry.
Any of these means the joints need attention:
- Second-fix sealing on new plots
- Cracked caulk along new skirting
- Joints pulling apart as timber shrinks
- Messy sealant that spoils new finishes
For jobs in and around Stornoway, choosing the right material for each joint is as important as a tidy finish.
Comparing quotes
- Who turns up on the day
- What happens if the job turns out different
- How the surfaces are prepared before sealing
- When the joint can take water or movement
What affects the quote in Stornoway
We do not publish a price list, because jobs vary so much. The quote depends on:
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
- Working hours on commercial sites
- The number of rooms or windows
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
To help us quote quickly, let us know:
- Where the property is
- Access, such as stairs, a lift or height
- The type of property
- Pictures of the joints, sent by email
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.
Places near Stornoway
What else we do in Stornoway
Stornoway: your questions answered
Do you cover smaller places like Stornoway?
Yes, Stornoway is covered. Our work covers the whole of Scotland, islands included, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do new build mastic in Stornoway?
Yes. Our work covers the whole of Scotland, and Stornoway is part of that. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will you just run a new bead over the existing one?
No. Fresh silicone doesn’t stick to the old layer, so it soon lifts and traps water. We cut the old bead out completely.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Stornoway and across Na h-Eileanan Siar. Several sites can be quoted together, and we are fully insured for the work.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
New homes and floors in Stornoway
Stornoway is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so any gaps are best picked up early. Stornoway is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for plot mastic and the sealant in new homes to keep out.
Around Stornoway, as everywhere, new build mastic is only as good as the preparation behind it.
Stornoway (Gaelic: Steòrnabhagh) is in Na h-Eileanan Siar. For new build mastic in and around Stornoway, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We cover Na h-Eileanan Siar from our Crawley base, Stornoway included. Our area takes in 87 places across Na h-Eileanan Siar, from the larger towns to small villages.
Postcode districts we cover here for new build mastic: HS1 and HS2. Local streets include Barony Square, Bain Square and Grant Square. Main roads around Stornoway include the A857 and A859, which makes travel easy. We also cover the places around Stornoway: Plasterfield (1 mile east), Laxdale (1 mile north), Sandwick (1 mile south-east), Steinis (1 mile east) and Newmarket (1 mile north). Stornoway is one of the larger places we cover in Na h-Eileanan Siar. For island and remote addresses, a little more planning is needed, so let us know when you get in touch.
Landmarks near Stornoway
In Stornoway, that means homes and buildings near Neptune's Bar. Well-known places in the area include Western Isles Hospital (0.5 miles north) and Lewis Loom Centre (within half a mile south-west). Not far away are Loch Àirigh na Lic.
Surface by surface
Show homes
Tired or marked sealant in a show home can be renewed. The old bead comes out and a clean new one goes in.
Kitchens
Beside the sink, the joint takes water every day. We use a sealant suited to kitchens suited to the job.