The Mastic Doctor team standing beside their branded vans outside an office building
Na h-Eileanan Siar · Scotland

Sealant specialists in Upper Coll

Commercial sealant contractors in Upper Coll, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Earlier reseals applied straight onto the failed bead
  • Damp patches where an external joint has failed
  • Mouldy silicone around WCs, urinals and vanity tops
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Commercial sealant contractors near Upper Coll

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

What Upper Coll’s businesses ask us to seal

Upper Coll is within about 1 mile of the coast. Exposed frontages near the sea are hard on sealant, so the product has to suit the weather as well as the look. Where a frontage needs a particular colour, the product still has to suit that exposure. Island jobs, Upper Coll among them, are planned around the ferry and the forecast. Colour references and photographs up front let us bring the right sealants first time.

Whatever the building in Upper Coll, commercial sealant work starts with cutting out the failed bead and cleaning the joint back to sound material. For premises around Upper Coll where the joint is seen, colour options for the product are confirmed with the quote.

Upper Coll (Gaelic: Col Uarach) is in Na h-Eileanan Siar. If you’re looking for commercial sealant contractors in Upper Coll, we can help. Upper Coll is one of 87 places we cover in Na h-Eileanan Siar for sealant joints.

Postcode districts covered here: HS2. We also cover Aird Tong (1 mile south), Tong (1 mile south-west), Bac (2 miles north-east), Newmarket (3 miles south-west) and Steinis (3 miles south). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.

Landmarks near Upper Coll

A little further out are Lewis Loom Centre (3.6 miles south-west) and Western Isles Hospital (3 miles south-west). For a walk, there’s Loch Àirigh na Lic.

Map of Upper Coll © OpenStreetMap contributors

Sealant specialists in Upper Coll

Most commercial buildings carry hundreds of metres of sealant that nobody thinks about until it fails, and in an occupied building failure usually announces itself as a stained ceiling or an unhappy tenant. We are commercial sealant applicators for FMs, managing agents, landlords and contractors looking after property in Upper Coll. We find out why the sealant joints failed, take them out and seal again using a sealant that suits the joint. If you have weathered facade sealant that no longer flexes and wall and floor joints that have lost their seal, we can help, on kitchen worktops and splashbacks, movement joints in walls and floors and washrooms and tea points alike. Searching for sealant specialists in Upper Coll? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

The most common commercial job in Upper Coll is resealing joints that have simply reached the end of their life: split, chalky or peeling, with leaks or mould starting behind it.

Around smaller places such as Upper Coll, the commercial buildings tend to be hospitality, local shops, schools, health centres and converted rural buildings. Each has kitchens, washrooms and frames that depend on sound joints.

Our workmanship is guaranteed for 12 months, in Upper Coll as everywhere else we work. If our installation lets you down in that time, we return and fix it.

Place
Upper Coll (HS2)
Wider area
Na h-Eileanan Siar
Cover
12 months on our workmanship
Price
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

When to bring in a specialist

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

Why act early in Upper Coll

It can be tempting to hold sealant work back until the next refurbishment. That’s reasonable for internal joints that are just tired-looking, but external and wet-area joints that already leak shouldn’t wait. We can seal the urgent joints now and leave the rest for the programme. Renewing every failing joint on one visit is the sensible approach for a place like Upper Coll. Send photographs and we’ll quote for everything together.

The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Why appoint us

  • CHAS accredited
  • Failed material removed, not covered up
  • Fixed quotes based on photos, drawings or a visit
  • RAL and finish matching where the product range allows

See our cost guide or our accreditations and insurance.

From enquiry to sign-off

The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. Where we can, we combine work around Upper Coll with other jobs nearby, to make the most of each trip. Tell us how flexible your dates are.

  1. First, details come to us: photographs, drawings or a schedule of the areas.
  2. The failure is diagnosed and a fixed quote issued for the work agreed.
  3. Before anything is cut out, we agree access, timings and sequence.
  4. The failed bead is removed and the joint faces cleaned until they’re sound and dry.
  5. We fit backing to the right depth, prime where specified and lay the new bead.
  6. We walk the completed areas with you and sign them off under the 12-month guarantee.

Before we start on site

  • Arrange parking or a loading space
  • Tell us what induction or permit system the site runs
  • Tell staff and tenants when we’ll be in

Quotes

Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, speak to us on 01277 525 020 or send details through our quote form.

Get a quick quote

Related advice

Building owners, agents and FMs in Upper Coll

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 Upper Coll can sit alongside others in a wider programme.

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.

Your questions answered

Can the sealant on our Upper Coll premises match the finishes?

Yes, we can normally get close to most finishes from the product’s colour range. Send colour references or photographs and we’ll confirm what’s available for the product.

Does a coastal location like Upper Coll affect which sealant is used?

It can. Coastal exposure works external joints harder than inland weather. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.

What about asbestos in old mastic?

In buildings from before 2000 in particular, some old mastics and sealants may contain asbestos. We ask to see the asbestos register or survey before disturbing old sealant, and anything suspect is left until it has been tested.

Does the weather affect the work?

It can, for external work. 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.

Do you work for facilities managers and managing agents?

Yes, and through main contractors too. We quote, schedule and report back in the way that suits your process, with a 12-month guarantee on the workmanship.

How long before the joints can be used?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

What sealant work can’t fix

Our job is the joint, not everything around it. Sealant alone won’t deal with:

  • Walls or slabs moving more than any sealant can take
  • Faulty windows rather than failed perimeter sealant
  • Old mastic that tests positive for asbestos

Not sure which it is? You can phone 01277 525 020 or send details through our quote form and we’ll tell you honestly before you book.

What we seal

  • Washrooms and tea points
  • Window and door perimeters
  • Kitchen worktops and splashbacks
  • Movement joints in walls and floors
  • Floor and threshold joints
  • External facade joints

Maintenance after handover

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Note dates and locations of sealant work for future planning
  • Make sure contractors see the asbestos survey before cutting out old mastic
  • Make sure ventilation in wet areas is switched on and working
  • Brief cleaning contractors to avoid scourers and blades on sealant

Later works are the usual way new joints get damaged. Shop refits, new services and replaced fittings often break the seal around them and the joint gets left open. If that happens, call 01277 525 020 or send photos by email and we’ll price putting it right.

An open joint in a food area or toilet collects dirt and moisture that cleaning can’t reach. Environmental health officers look at how cleanable surfaces are.

Accreditations

Trusted. Accredited. Insured.