Construction and new-build mastic in North Lochs, Na h-Eileanan Siar
Mastic packages for new-build and refurbishment projects throughout North Lochs and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.
- Window and door perimeters that won’t pass inspection
- Sealant knocked or painted over by other trades
- Old sealant on a refurbishment that needs stripping before new work
Construction mastic across North Lochs
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Why act early in North Lochs
Clearing snags piecemeal is tempting when handover is close. But one planned snagging pass through each area typically clears more for less disruption. We can run snagging as its own phase before handover. In Scotland, wind-driven rain finds a failed joint quickly, and for a smaller place like North Lochs, a repair visit takes planning, so it’s better to act early.
Pricing mastic packages depends on how many there are, their condition and the access, plus any specification you’re working to. Call for a quote.
Why clients in North Lochs choose us
- CHAS accredited contractor
- Failed material removed, not covered up
- One phone line for London, the South East and Scotland
- RAL and finish matching where the product range allows
Take a look at what affects the cost or our accreditations and insurance.
Construction mastic in North Lochs
On a new build, the mastic package is one of the last trades through each area, so it lands at exactly the point the programme is tightest. Mastic Doctor takes on mastic packages for main contractors and developers on schemes in North Lochs. We work on brick and block movement joints, cladding and panel joints and window and door perimeters, and the failures we are asked to look at most are different trades sealing to different standards and existing joints on a refurb that need cutting out and resealing. Whoever orders the work in North Lochs, the brief is typically the same: a clear scope, tidy work and joints that don’t fail again.
Outside mastic in Scotland needs a dry, frost-clear joint, and in a place like North Lochs that means watching the forecast. A little flexibility in the programme lets external joints go in on suitable days.
We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Location
- North Lochs (HS2)
- Wider area
- Na h-Eileanan Siar
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
New build and refits around North Lochs
With the shore within about 1 mile, North Lochs counts as a coastal location. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. For an island location such as North Lochs, work is planned around ferry crossings and the weather. With drawings and the programme in hand, the whole mastic package comes with us.
On a healthcare site such as Western Isles Hospital, 6 miles to the north-east of North Lochs, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
North Lochs is about 6 miles south-west of Stornoway, in Na h-Eileanan Siar. Across the HS2 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 87 places in Na h-Eileanan Siar.
We cover the HS2 postcode districts. Sites close to North Lochs are covered too, including Crosbost (1 mile east), Liurbost (1 mile west), Lacasaidh (4 miles south-west), Marybank (5 miles north) and Stornoway (6 miles north-east). For island and remote sites, we plan travel and materials carefully, so the full address helps from the start.
Landmarks near North Lochs
A little further out are Western Isles Hospital (6 miles north-east). For a walk, there’s Nisreaval and Loch na Craoibhe.
Owners, agents and contractors
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.
We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in North Lochs can sit alongside others in a wider programme.
Do you need construction mastic in North Lochs?
Swapping the specified sealant for a cheaper general-purpose product is a common cause of failure. A sealant that isn’t right for the substrate or the movement will fail ahead of time. We use what’s specified, and any substitute goes to you for acceptance.
It’s worth sending us details if you spot any of the following:
- Frame gaps too wide for sealant alone
- Failed sealant in an existing building being refurbished
- Sealant knocked or painted over by other trades
- Inconsistent sealant finishes from plot to plot
For contractors building in or near North Lochs, we seal to the drawings, the specification and the programme.
Comparing quotes
- Their approach to joint depth and backing
- How they handle RAMS and site documents
- Is the sealant right for the movement and the substrate?
- What the guarantee covers, and for how long
From enquiry to sign-off
Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Travel to smaller Scottish places like North Lochs 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.
- We price from the drawings, specification and programme you send.
- You receive a fixed quote listing scope, products and phasing.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Areas are sealed plot by plot or floor by floor as the trades hand them over.
- Every joint is prepared, set to depth and sealed with the specified product.
- Snags are cleared before handover and completed areas carry our 12-month guarantee.
What we need from you
- Point out any areas we must not close
- Warn occupants and staff about the work
- Arrange parking or a loading space
Ask for a quote
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings you can plan around. For a chat about it beforehand, call 01277 525 020 or email the details over.
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What else we do in North Lochs
How the job changes by surface
Window and door perimeters
Internal perimeters are usually sealed with a paintable product where decorating follows. The specification decides which, and colour-matched products can be used where the frame is on show.
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.
FAQs: North Lochs
Would you work within a site like Western Isles Hospital?
Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Is North Lochs inside the area you cover, given it’s on an island?
Yes, North Lochs is within the area we cover. Every Scottish council area is within our area. Ferry times and the weather set the plan, so we ask for photographs and a full list first.
How do you work with the site programme?
Our work is sequenced around the programme. Areas are sealed as they’re released by the site team, and we’ll raise anything that holds the work up.
Can the building stay open while you work?
In most cases, yes. Phased work can be planned so areas stay in use.
What hours do you work?
The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
How do I request a quote?
There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
When to bring in a specialist
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.
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.