Construction and new-build mastic in Lochboisdale, Na h-Eileanan Siar
Construction mastic for Lochboisdale, from a contractor working since 2005. Fully insured and CHAS accredited.
- Caulk cracking where joints are moving more than expected
- Early adhesion failures on new external joints
- Missed perimeter joints on a new elevation
Construction mastic in Lochboisdale
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Questions we’re asked in Lochboisdale
Can you work to our programme on a site in or near Lochboisdale?
Yes, we work to the programme and the sequence the site sets. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Can you take on a job in Lochboisdale, on the island?
Yes. Islands are part of our area, Lochboisdale included. Island work is planned around ferry crossings and the weather, so photos and a full list before we travel are essential.
Is it fine to apply new sealant on top of old?
No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Are you insured?
Yes. Our insurance certificate can be sent alongside the quote.
Do you take on multi-site work?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
Can you fit around our programme?
We seal plot by plot or floor by floor as areas are released. The sequence is settled with your site team and updated as the programme moves.
Is the mastic package guaranteed?
Our workmanship carries a 12-month guarantee from sign-off. Damage by others after we’ve finished isn’t covered.
Construction mastic in Lochboisdale, done properly
Most of the packages we price run well beyond frames: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. Splitting those between trades often leaves gaps in responsibility and gives you a consistent finish across the job. If you’re dealing with sanitary sealant damaged by following trades and oversized or tapered gaps around new frames, we can help, whatever the surface. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Lochboisdale is the same: the right product in a properly prepared joint.
Outside mastic in Scotland needs a dry, frost-clear joint, and in a place like Lochboisdale that means watching the forecast. We build some give into the plan and agree it with the site manager.
Our workmanship is guaranteed for 12 months, in Lochboisdale as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Lochboisdale (HS8)
- Region
- Na h-Eileanan Siar
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
From enquiry to sign-off
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you. Tell us who will meet us and how to get in at your building near Lochboisdale. That goes into the plan alongside the quote.
- First we look at the scope on site or from drawings.
- A fixed quote sets out scope, products and phasing.
- Paperwork is agreed and applicators are inducted on site.
- Sealing follows the programme as areas are released.
- Any frame gaps or issues outside our scope are flagged to the site team.
- Final snagging is completed and the 12-month guarantee applies.
Getting the site ready
- Point out any areas we must not close
- Send any specification or drawings in advance
- Flag any permit to work we will need
Request a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, ring 01277 525 020 or email drawings and photos.
Related advice
Maintenance after handover
Cleaning and maintenance staff play a part too. Share these points with them:
- Ask installers to correct oversized gaps first
- Release areas for mastic once other trades have finished in them
- Brief the final clean team to avoid blades near sealant
- Record the products used in the O&M file
Tell the builders’ clean team which areas have new sealant. Blades and abrasive pads are the commonest cause of damage at the final clean, so stick to soft cloths and gentle cleaners near sealant.
Sanitary joints that fail early become defects soon after occupation. Water gets behind trays, vanity tops and panels, and the repair falls into the defects period. Getting the product and preparation right first time avoids that.
When something else is needed
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Specifying the product where the designer hasn’t
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Rework caused by others damaging completed areas
If in doubt, give us a call on 01277 525 020 or email us and we’ll say what we think.
Surfaces we seal
- Internal decorators’ caulk
- Window and door perimeters
- Floor and skirting junctions
- Brick and block movement joints
- Sanitary and kitchen joints
- Cladding and panel joints
Why act early in Lochboisdale
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, with the same standard on every plot. In Scotland, wind-driven rain finds a failed joint quickly, and for a smaller place like Lochboisdale, a repair visit takes planning, so it’s better to act early.
The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
Why choose Mastic Doctor in Lochboisdale
- Workmanship guaranteed for 12 months
- Colours chosen to suit frames, cladding or finishes where possible
- A fixed quote before work starts
- One number for every site we cover
Take a look at our cost guide and our accreditations.
Facades, frames and programmes in Lochboisdale
Lochboisdale lies within about 1 mile of the sea. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, and the sealant, primer and backing need choosing with that in mind. Being on an island, Lochboisdale means planning around ferry times as well as the weather. Drawings and the programme let us bring every sealant, primer and backing rod the package needs.
Hotel extensions and refits, at places such as Lochboisdale Hotel, under half a mile to the north-east of Lochboisdale, typically run between busy periods, so the sealing is squeezed into short windows.
Lochboisdale is in Na h-Eileanan Siar. We cover Lochboisdale and the rest of Na h-Eileanan Siar, with the same fixed quotes and 12-month guarantee as everywhere else. Our Na h-Eileanan Siar coverage takes in 87 places.
Commercial sites across HS8 are covered. For a building on Braehead, Calabhaigh and Kenneth Terrace or nearby, we can quote for mastic packages. Close to Lochboisdale, our area also takes in Loch Baghasdail (1 mile north), Dalabrog (2 miles north-west), Rubha Ban (5 miles south), Eòlaigearraidh (9 miles south-west) and Cuidhir (12 miles south-west). Where a site is remote or on an island, travel and materials need planning ahead, so the full address helps from the start.
Near you in Lochboisdale
Well-known places in the area include Calvay Castle (1.8 miles east). The countryside around Lochboisdale includes Beinn Ruigh Choinnich and Loch Stulaval.
What the job involves on each surface
Window and door perimeters
A frame gap that’s too wide can’t just be filled with sealant. Gaps outside the product’s range are raised with the site team.
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. We set the depth with backing rod to avoid three-sided adhesion.
Signs you need construction mastic in Lochboisdale
A joint without backing rod or bond-breaker often fails early. Fixed to three faces, the sealant rips the first time the joint opens, so depth is controlled with backing rod or bond-breaker tape.
Things that typically lead to an enquiry:
- Different trades sealing to different standards
- Early adhesion failures on new external joints
- Existing joints on a refurb that need cutting out and resealing
- Oversized or tapered gaps around new frames
For contractors building in or near Lochboisdale, we seal to the drawings, the specification and the programme.
Before you book anyone
- Their public liability cover
- Whether primer will be used where the manufacturer specifies it
- Will CSCS-carded applicators be on site?
- The terms of the workmanship guarantee