The Mastic Doctor team standing beside their branded vans outside an office building
Highland · Scotland

Altnaharra commercial sealant contractors

Sealant work for offices, shops, hotels and other commercial buildings in Altnaharra and across Highland. CHAS accredited and fully insured, with a 12-month guarantee.

  • Sanitary sealant that has gone black and patchy
  • Movement joints packed with grit and debris
  • Frame mastic that has hardened and come away from the wall
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Commercial sealant contractors in Altnaharra

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

How we handle commercial sealant contractors in Altnaharra

Failed sealant isn’t always the whole story. Water at a window perimeter might be coming from the frame, the cill or the wall behind, and repeated splits in a movement joint can mean the joint is too narrow for the movement. We look before we quote and tell you plainly if sealant won’t solve it. We work on external facade joints, window and door perimeters and washrooms and tea points, and what we’re called in for most is damp patches where an external joint has failed and gaps behind commercial kitchen worktops and sinks. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Altnaharra, that means joint design, primers and backing rod as standard.

In an occupied building in Altnaharra, the job is planned so areas stay in use: we agree the order with you and hand back each area with its cure time.

Travel to smaller places such as Altnaharra is planned so the whole job is finished in one visit where possible: send photos and a complete list so the right products and colours come on the day. If neighbouring businesses have work too, the visits can be grouped.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Altnaharra (IV27)
Region
Highland
Cover
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026

Our process

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you. For work around Altnaharra, we aim for one trip, which is why we ask for photographs and a full list first. External joints need a dry spell as well.

  1. We start with the evidence: photos, drawings or a look on site.
  2. You get a fixed quote covering removal, preparation and the new sealant.
  3. We agree the order of work, access windows and site hours with you.
  4. Each joint is stripped, cleaned back to sound faces and primed where the maker specifies.
  5. Backing goes in, the new sealant is laid and tooled, and the area is left neat.
  6. Completed areas are signed off with you under our 12-month guarantee.

Preparing the site

  • Tell us which areas need to stay in use
  • Explain the parking and delivery arrangements
  • Share your working hours and any access restrictions

Quotes

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to call 01277 525 020 or send details through our quote form.

Ask for a quote

Read more

Surface by surface

Facade and cladding joints

On a facade, a failed joint is often only visible close up. Photos from a closer viewpoint help us price, and we’ll confirm the colours available for the specified product.

Shop fronts and retail fit-outs

Most shops can’t close for a reseal. Tell us your trading hours and access windows and we will plan around them, working in sections where that helps.

Leave it or put it right?

Fixing joints complaint by complaint is a costly way to manage sealant. A planned programme groups work by building or area, cuts repeat visits and gives you a budget figure. We can help you prioritise, starting with the joints most likely to let water in. Around smaller places like Altnaharra, halls, stores and seasonal buildings may not be checked often, so a failed joint has time to cause damage. Early resealing prevents it.

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.

Why choose Mastic Doctor in Altnaharra

  • Specification-led, product-correct work
  • Workmanship guaranteed for 12 months
  • Constructionline member for supplier checks
  • CSCS-carded applicators

Read how commercial sealant jobs are priced and how we’re accredited.

Common questions from Altnaharra clients

What paperwork can you provide for a job in Altnaharra?

Whatever your site asks for, from RAMS to CSCS details, is confirmed when we quote. Our applicators are CSCS-carded, and we carry £5m public liability insurance.

Can the sealant on our Altnaharra premises match the finishes?

Yes, we can usually get close to most finishes from the product’s colour range. Available colours for the product are confirmed with the quote.

Are you insured?

Yes. We are fully insured, including public liability cover.

Do you work for facilities managers and managing agents?

Yes. Use our quote form to send the site details, or phone or email us, and we’ll confirm any paperwork you need with the quote.

Do you check for asbestos before removing sealant?

Some older mastics did contain asbestos. That’s why we ask for the asbestos information first, and stop if a material is suspect until it’s tested. HSE guidance on asbestos is a useful reference.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

Does weather matter for sealant work?

It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.

General trades versus a specialist

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

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.

Owners, agents and contractors

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules.

Commercial premises in Altnaharra

Altnaharra is in the west of Scotland, the wetter side of the country. Frontage work is booked with a few days’ give for the weather. Weather-facing frames tend to need resealing before the sheltered ones

For a hotel such as Altnaharra Hotel (less than half a mile south-east of Altnaharra), the colour of a joint at the bar or the bath matters to the look of the room. A lasting commercial joint around Altnaharra begins with the old bead fully out and the faces clean and dry.

Altnaharra is about 39 miles south-west of Thurso, in Highland. We cover commercial sites throughout Altnaharra, whether it’s a single job or part of a planned programme. We work across 256 places in Highland, from busy centres to rural villages.

Anyone looking for commercial sealant contractors in IV27 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your building is just outside Altnaharra, we cover 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). Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so give the site location in your enquiry.

Near you in Altnaharra

For a walk, there’s Loch Eileanach and Meall an Fhuarain.

Map of Altnaharra © OpenStreetMap contributors

Keeping the joints sound

Problems stay small when the joints are checked regularly. In particular:

  • Keep washroom and kitchen extraction working
  • Check sealant as part of routine building inspections
  • Check joints after other trades have worked nearby
  • Deal with small splits before they become leaks

Good ventilation keeps wet-area sealant in better condition. Fans that are broken or switched off leave joints damp for longer, which is how mould gets back in. Your maintenance team can look at extract fans at the same time.

Sealant installed at the same time usually fails in sequence. A few splits this year normally mean more next year, so it makes sense to look at the wider elevation or block. We’ll tell you which sealant joints need doing first and which can wait.

Accreditations

Trusted. Accredited. Insured.