Mastic contractors in Thurso
Planning work on a mastic package in Thurso? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Internal caulk splitting as the building dries out
- Existing joints on a refurb that need cutting out and resealing
- External joints sealed in damp or cold conditions that are now failing
Construction mastic for businesses in Thurso
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Mastic packages on Thurso sites
Thurso lies within about 1 mile of the sea. Coastal exposure means perimeter and cladding joints work harder than on an inland job, and the sealant, primer and backing need choosing with that in mind. Projects in Thurso follow Scotland’s building regulations, with the local authority acting as verifier. We seal to the specification that sits behind the warrant.
For a contractor at a hotel such as Station Hotel, less than half a mile to the south-east of Thurso, the mastic often has to be finished before a reopening date. For a contractor working at a hospital such as Dunbar Hospital, which lies south-west of Thurso, perimeter and facade sealing is planned around patients and deliveries.
Thurso is in Highland. Any commercial site in Thurso is covered, whether it’s a single job or part of a planned programme. Our Highland coverage takes in 256 places, from busy centres to rural villages.
We cover the KW14 postcode districts. Buildings on Sir John's Square, Gerry Square and High Street are within our area. Main routes into Thurso include the A9 and A836. Sites close to Thurso are covered too, including Scrabster (2 miles north-west), Glengolly (2 miles south-west), Janetstown (3 miles south-west), Murkle (3 miles east) and Forss (4 miles west). Thurso is one of the busier places in Highland, and its commercial and public buildings are all within our area. Remote and island addresses take more planning, from travel and ferries to the weather, so mention the location when you call 01277 525 020 or send photos by email.
Around Thurso
Thurso has its own railway station: Thurso station. Nearby you’ll also find Scrabster Castle (0.7 miles north-west) and Thurso Heritage Museum (0.6 miles north-west).
About our construction mastic in Thurso
Mastic follows everyone else, which means it absorbs every delay upstream. The sequence is set with the site team and updated as plots or floors are handed over and we don’t seal before other trades have finished in an area. Sealing too early only means coming back once others have damaged it. Most enquiries involve oversized or tapered gaps around new frames and a mastic package split between trades with no clear owner, on floor and skirting junctions, window and door perimeters and cladding and panel joints. Most enquiries from Thurso start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Scottish towns such as Thurso see new housing, schools and health centres alongside work on older stone and harled buildings. The mastic package changes with the building: harl and render on some, cladding and brick on others.
Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- Thurso (KW14)
- Region
- Highland
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
More services for Thurso
How the job changes by surface
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. Depth is controlled with backing rod so the bead bonds to two sides only.
Bathrooms, en suites and washrooms
In bathrooms and washrooms, an anti-mould sanitary silicone goes around every fitting. Each joint is prepared, sealed and finished with a neat tooled line and baths are loaded where appropriate before sealing.
Diagnose, treat, sign off
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. In a Scottish town such as Thurso, outside work is planned around the weather and inside work around the occupants. Send photographs or drawings and we will quote and plan to suit.
- First we take quantities off the drawings and read through the specification.
- 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.
- We seal each plot or floor as it’s released to us.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- We close out snagging and hand over with a 12-month guarantee.
Preparing the site
- For older buildings, check the asbestos register before work
- Clear stock, furniture or equipment away from the joints
- Send your site hours and access windows
Request a quote
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or speak to us on 01277 525 020 or email a schedule or drawings to discuss it first.
Advice
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 typically costs more in the end than doing them right.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
When to call us in Thurso
On construction sites, joints normally fail early because of when they were sealed, not what was used. Sealing before decorators, flooring or other trades have finished leaves joints exposed to damage, so they end up back on the snag list.
If one of these sounds familiar, it’s time for a closer look:
- Frame perimeters left unsealed or poorly sealed
- Early adhesion failures on new external joints
- Perimeter gaps outside the sealant’s range
- Snag items on joints that need redoing before handover
For contractors at a school such as Thurso High School, sealing has to be finished before term starts.
What your quote should include
- How joint depth will be controlled
- Who will actually carry out the work
- Do they follow the manufacturer’s priming guidance?
- What the guarantee covers, and for how long
Questions we are asked in Thurso
Does the sea air around Thurso change the choice of sealant?
It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.
Do you take on work at healthcare sites like Dunbar Hospital?
Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.
What will the job cost?
It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote.
What joints do you seal on a new build?
Window and door perimeters, internal decorators’ caulk where specified, sanitary joints, kitchens, movement joints and snagging. The scope follows your specification.
What happens if the weather stops external sealing?
Outside, the joint has to be dry and the temperature within the product’s limits. Damp, frost or condensation on frames can stop work.
Can the building stay open while you work?
Typically, yes. We phase the work so most of the building stays in use, with each area protected and signed.
How do you work with the site programme?
We follow the trades through the building. Areas are sealed as they’re released by the site team and we tell you if something stops an area being sealed.
Owners, agents and contractors
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.
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.
Maintenance after handover
Problems stay small when the joints are checked regularly. Specifically:
- Check frame gaps are within the sealant’s range before sealing
- Allow flexibility for external sealing in damp or cold weather
- Protect sealed areas from following trades
- Get the mastic subcontractor involved early in the programme
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.
One unsealed frame can let water into finished internal areas. On a new building that means remedial work after decorating, and a delay to handover. A check of every frame before decorators start is worth the time.