
Expansion Joint Sealing in Altnaharra
Expansion and movement joint sealing in walls, decks and floors in Altnaharra and across Highland. CHAS accredited and fully insured, with a 12-month guarantee.
- Weathered movement joint sealant that no longer flexes
- Arrises breaking up along floor joints
- Car park joints leaking onto vehicles below
Need expansion joint sealing in Altnaharra?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Should maintenance staff do it?
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Expansion joint sealing in Altnaharra
Width, depth and product all have to work together. Joint width must suit the movement and the movement class of the sealant. For wider joints, many sealant makers recommend a width-to-depth ratio, often around 2:1, and the bead is tooled so it grips the two faces alone. If you have joints packed with grit and debris and chipped joint edges on forklift routes, we can help, whatever the surface. Searching for sealant specialists in Altnaharra? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Around smaller Scottish places like Altnaharra, slabs needing attention are often in agricultural buildings, workshops, schools and hotels. Slabs and yards take vehicles, rain and frost.
Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.
- Location
- Altnaharra (IV27)
- Region
- Highland
- Guarantee
- 12 months on every job
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026

Also near Altnaharra
Other services in Altnaharra
On site: what to expect
Occupied buildings need a little choreography. We sign and contain the area we’re in, with routes through the building left open and work section by section so the rest of the building stays in use. Where we can, we combine work around Altnaharra with other jobs nearby, to make the most of each trip. Let us know if your dates have any give.
- We look at the joints, their width and how they’ve failed.
- Next, we fix a price and confirm the sealant we propose for the movement.
- We strip out the old seal and prepare the faces.
- Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
- Primer goes on where the manufacturer specifies it, followed by the sealant, which is then tooled off.
- Finished joints are checked and backed by our 12-month guarantee.
Getting the site ready
- Warn occupants and staff about the work
- Arrange parking or a loading space
- Clear stock, furniture or equipment away from the joints
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.
Related advice
Leave it or put it right?
Re-sealing with the same product that failed is often a false economy. A higher movement class, or a design change by the engineer, may be needed and we will tell you honestly. Renewing every failing joint on one visit is the sensible approach for a place like Altnaharra. Send photos and we’ll quote for everything together.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.
What you get with us
- Colours chosen to suit frames, cladding or finishes where possible
- Joints cleaned back to sound surfaces
- Constructionline member for supplier checks
- A fixed quote before work starts
Traffic, movement and joints around Altnaharra
Altnaharra is on Scotland’s wetter western side. External slab joints left open take plenty of rain. Outside joints are sealed in dry spells, so dates have some give.
Around Altnaharra, open joints collect water and debris, and the arrises are the next to go; we’ll tell you if the edges need repairing first. In and around Altnaharra, the right filler or sealant for each joint depends on the traffic and the movement it takes.
Altnaharra is about 39 miles south-west of Thurso, in Highland. We cover Altnaharra and the rest of Highland, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Altnaharra is one of 256 places in Highland on our list for movement joints.
Business premises anywhere in IV27 are within our area. Close to Altnaharra, our area also takes in Tongue (13 miles north), Melness (17 miles north), An Luirg (18 miles south), Am Blàran Odhar (19 miles north-east) and Innis nan Lìon (21 miles south). Where a site is remote or on an island, we plan travel and materials carefully, so the full address helps from the start.
Around Altnaharra
The countryside around Altnaharra includes Loch Eileanach and Meall an Fhuarain.
When it isn’t the sealant
Some faults sit outside our scope, and we point that out rather than sealing over them:
- Cracking or settlement that calls for an engineer’s assessment
- Broken or spalled joint edges, which need repairing before any sealant goes in
- Waterproofing layers buried beneath the sealant
If you are not sure, just call 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.
Surfaces we seal
- Blockwork control joints
- Precast concrete panel joints
- Car park decks and ramps
- Podiums and floor movement joints
- Cladding panel joints
- Brickwork movement joints
What sets the cost
These are the things that shape the price:
- Location, for remote and island sites
- Whether old sealant has to be cut out first
- Whether the work must be split into stages
- Site requirements such as inductions and permits
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
What to include in your enquiry
To price the job accurately, we need to understand the site. Send us:
- A wide shot and a close-up of the area
- Your programme or deadline
- How the joints are reached, and at what height
- Asbestos survey details if the building is older
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we’ll arrange a site visit if anything is unclear.
Building owners, agents and FMs in Altnaharra
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.
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
FAQs: Altnaharra
Which documents can you supply for work in Altnaharra?
RAMS, insurance certificate, CSCS details: list what the site needs and we’ll confirm it with the quote. We hold £5m public liability insurance, are CHAS accredited and a Constructionline member, and our applicators are CSCS-carded.
Is a smaller place like Altnaharra outside your area?
Not at all. Altnaharra is within our area. We cover the whole of Scotland. Good photos up front let us bring everything on the first visit.
What exactly is a movement joint?
Put simply, it’s a planned break in a wall, slab or deck so the materials can move. Expansion joint is a name often used for the same thing.
How do we ask for a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photographs and a postcode.
Do you take on small jobs?
Small jobs are welcome alongside larger packages. Send details for a fixed quote.
Does the weather affect the work?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
How do you deal with asbestos in old sealant?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.