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

Stornoway facade sealing

Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Stornoway. Send details for a fixed quote.

  • Weathered facade joints that have lost their grip
  • Gaps between rainscreen or cladding panels
  • Previous reseals run over old sealant
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m PL insurance

Facade sealing for businesses in Stornoway

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

Maintenance after handover

After handover, these steps help:

  • Don’t wait for a second leak before calling
  • Keep the sealant details on the building file
  • Confirm the survey covers external sealants in older buildings
  • Never let anyone seal over old sealant

If new signage, brackets or services are fixed through a sealed joint, the seal needs making good. Ask the installer to reseal it properly with a compatible product.

Use each reseal to correct the joint: correct depth, proper backing and a sealant that can take the movement. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Facade sealing in Stornoway

Facade joints are the line of defence between the weather and the building fabric. When a perimeter bead splits or peels, water finds its way behind frames and into the structure. We cut out failed facade joints and reseal them with a facade-grade sealant suited to the movement. If you are dealing with staining on stone next to old sealant and hard, chalky sealant that no longer flexes, we can help, on cladding panel joints, shopfront frames and window and door perimeters alike. Facilities teams, main contractors and managing agents in Stornoway tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

Construction around smaller Scottish places like Stornoway is often one-off schemes: a school, a health centre, a hotel extension or a few houses. The mastic still needs to suit exposed elevations and Scottish weather.

We stand behind the joints we seal with a 12-month guarantee. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.

Place
Stornoway (HS1, HS2)
Wider area
Na h-Eileanan Siar
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

What we can’t put right

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:

  • Joints whose design needs changing by the specifier
  • Specialist high-level access methods
  • Cracked or spalling substrates that need repair before sealing

Not sure which it is? You can give us a call on 01277 525 020 or send photos by email and we’ll tell you honestly.

Joints and surfaces we work on

  • Perimeter joints where frames meet the structure
  • Window and door perimeters
  • Stone and brick facade joints
  • Cladding panel joints
  • Shopfront frames
  • Coping and flashing joints

Doing it in-house

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.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

What the job involves on each surface

Brick and stone facades

Stone can absorb plasticisers from the wrong sealant. The specified stone-compatible sealant is what we use.

Render and coated surfaces

Rendered and painted facades need a sound edge for the sealant to bond to. We remove flaking material so the bead bonds to a firm surface.

How a job runs

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Tell us who will meet us and how to get in at your building near Stornoway. That goes into the plan alongside the quote.

  1. First we review photos, drawings or what we saw on a visit, and agree how each joint will be reached.
  2. The old bead is cut away completely, not overlaid.
  3. Both faces are cleaned and, where the product needs it, primed.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

Before we start on site

  • Send asbestos survey details if the building is pre-2000
  • Tell us what induction or permit system the site runs
  • Have the specification and drawings to hand

Getting a fixed quote

For a fixed quote, ring 01277 525 020 or send details through our quote form, telling us the site location and the nature of the job. Our quote form is another easy route.

Ask for a quote

Advice

Questions we are asked in Stornoway

Will you travel to Stornoway on the island?

Yes, Stornoway is within the area we cover. Our area covers all of Scotland, cities, towns and islands alike. Ferry times and the weather set the plan, so we ask for photographs and a full list first.

Does your area include sites such as Gleann Seileach Business Park, near Stornoway?

Yes, sites like Gleann Seileach Business Park are within our area, along with the rest of Stornoway. Send details of the unit and the work through our quote form for a quick quote.

Can you send site paperwork?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.

Is any job too small?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

Do you run new sealant over the existing bead?

No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely. Nothing else gives a bond that lasts.

Do we need an asbestos check before resealing?

For older buildings, yes, check before work starts. The duty to manage asbestos sits with the dutyholder. Suspect material is left alone until it has been tested.

Do you seal on top of existing sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Mastic packages on Stornoway sites

Stornoway is within about 1 mile of the coast. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, so joint design, primers and product choice deserve extra care. Work on Stornoway has to fit the ferry timetable and the forecast. Everything for the package travels with us, so drawings and quantities matter.

When units on a site such as Gleann Seileach Business Park (0.8 miles north-west of Stornoway) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. Hotels like Royal Hotel (to the south-west of Stornoway) rarely close for long, so refurbishment mastic is phased floor by floor. On a healthcare site such as Western Isles Hospital, which lies north of Stornoway, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

Stornoway (Gaelic: Steòrnabhagh) is in Na h-Eileanan Siar. If you’re looking for facade sealing in Stornoway, we can help. We work across 87 places in Na h-Eileanan Siar.

Business premises anywhere in HS1 and HS2 are within our area. Among the streets we cover are Barony Square, Bain Square and Grant Square, and sites on any of them can send details for a fixed quote. Main routes into Stornoway include the A857 and A859, which helps when planning parking and deliveries for the job. We also cover Plasterfield (1 mile east), Laxdale (1 mile north), Sandwick (1 mile south-east), Steinis (1 mile east) and Newmarket (1 mile north) for facade joints. Stornoway ranks among the main centres of Na h-Eileanan Siar, with offices, shops, schools and other public and commercial buildings, and we cover them all. Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so mention the location when you phone 01277 525 020 or email us.

Around Stornoway

We work on buildings around Neptune's Bar and the streets around them. Well-known places in the area include Western Isles Hospital (0.5 miles north) and Lewis Loom Centre (less than half a mile south-west). Open spaces near Stornoway include Loch Àirigh na Lic.

Map of Stornoway © OpenStreetMap contributors

How the quote is worked out

The price varies from site to site. Expect it to depend on:

  • Which sealant the job calls for
  • Removal of failed or old sealant
  • The size and state of each joint
  • Whether the work must be split into stages

What a job costs comes down to how many linear metres there are, how much old material needs removing and the access. Call for a quote when you are ready.

Before you send an enquiry

We can often quote from photos and a few details. Please tell us:

  • Specification clauses that apply
  • Drawings or a marked-up plan, if available
  • Where the site is, with the postcode
  • Any dates the work must fit around

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call 01277 525 020 or email drawings and photos.

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