Facade and window perimeter sealing in Gunnista, Shetland Islands
Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Gunnista. Send photos or drawings for a fixed quote.
- Weathered joints at frame-to-structure perimeters
- Sealant pulling away from frames or panels
- Previous reseals run over old sealant
Facade sealing for businesses in Gunnista
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Facade sealing for commercial buildings in Gunnista
We are often asked to look at water coming in around frames. Very often the perimeter bead has cracked or lost its grip. If the evidence points away from the sealant, we say so before quoting. If you have unsightly perimeter sealant on a visible elevation and old perimeter mastic that has dried out, we can help, whatever the surface. One point of contact handles commercial sealant work in Gunnista from the first photos to the final walk-round, for single jobs and planned programmes alike.
Outside mastic in Scotland needs a dry, frost-clear joint, and in a place like Gunnista that means watching the forecast. A little flexibility in the programme lets external joints go in on suitable days.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Where
- Gunnista (ZE2)
- Region
- Shetland Islands
- Cover
- 12 months on every job
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Gunnista: questions and answers
Do you take on work at healthcare sites like Montfield Hospital?
Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Will you travel to Gunnista on the island?
Yes, Gunnista is within the area we cover. We work across every Scottish council area. We plan island jobs around the ferry and the forecast, and bring everything the job needs on the first crossing.
Do you replace failed glazing units?
No. That work needs a glazing specialist. We reseal window perimeters, panel joints and frame-to-structure perimeters across the facade.
How do I request 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 photos and a postcode.
Will your applicators have CSCS cards?
Yes. Should the site need card details in advance, tell us and we’ll confirm them with the quote.
Is it okay to overlay old mastic?
No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely and the joint cleaned back to sound material. That is what makes the new joint last.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Our process
Working in a building that stays open takes some planning. The work area is signed and kept contained, 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 Gunnista with other jobs nearby. Tell us how flexible your dates are.
- We plan access and the order of elevations with the client.
- Weather and temperature are checked against the product’s limits.
- We remove the old bead and check the edges are sound.
- Joints are cleaned, primed if required and fitted with backing rod.
- Facade-grade sealant goes in and is tooled to a tidy concave profile.
- We hand over with our 12-month workmanship guarantee.
What we need from you
- Tell us what induction or permit system the site runs
- Clear stock, furniture or equipment away from the joints
- Agree which areas must stay open
Quotes
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or use the quote form with what you know.
Related advice
More services for Gunnista
Owners, agents and contractors
Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
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.
Sites and facades in and around Gunnista
Gunnista lies within about 1 mile of the sea. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. Being in the east of Scotland, Gunnista gets less rain than the west coast. Cold, damp starts still stop external sealing on some days. External dates keep a little give.
New units and refits on sites such as North Ness Business Park, 1.9 miles to the south-west of Gunnista, need their panel and perimeter joints sealed to the specification. Hospital estates such as Montfield Hospital, 2.2 miles to the south-west of Gunnista, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Gunnista is in the Shetland Islands. Across the ZE2 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Gunnista is one of 63 places we cover in the Shetland Islands for facade joints.
Commercial sites across ZE2 are covered. Sites close to Gunnista are covered too, including Heogan (1 mile west), Gremista (2 miles west), Grindiscol (2 miles south), Lerwick (2 miles south-west) and Sound (3 miles south-west). Where a site is remote or on an island, we plan travel and materials carefully, so the full address helps from the start.
Local landmarks in Gunnista
Nearby you’ll also find Shetland Museum (2 miles south-west) and Montfield Hospital (2.2 miles south-west). Not far away are Loch of Aith.
When to call us in Gunnista
A frequent fault is a bead stuck to the joint’s rear face as well as its sides. Without rod or bond-breaker tape, the bead is held back and tears as the joint moves.
Clients normally get in touch after noticing something like this:
- Air leaks through failed facade joints
- Hard, chalky sealant that no longer flexes
- Failed seals around shopfront and entrance frames
- Failed sealant on precast panel joints
Work at a hotel such as Maryfield House Hotel (to the south-west of Gunnista) tends to be programmed around bookings, mastic included.
What your quote should include
- How the existing material will be dealt with
- Their pre-qualification and accreditations
- How they handle RAMS and site documents
- Do they follow the manufacturer’s priming guidance?
Why act early in Gunnista
Each spell of rain drives water past a failed facade joint. Behind the frame, that can mean damp plaster, stained ceilings, corroded fixings and damaged insulation. Resealing early costs far less than repairing what the water reaches. Exposed buildings in Scotland take a lot of weather, and for a smaller place like Gunnista, a repair visit takes planning, so it’s better to act early.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Why us?
- Fixed quotes based on photos, drawings or a visit
- Work to your specification and the manufacturer’s guidance
- Coloured sealants to suit the setting, where available
- Workmanship guaranteed for 12 months
Take a look at how commercial sealant jobs are priced and how we’re accredited.
What the job involves on each surface
Brick and stone facades
Stone can absorb plasticisers from the wrong sealant. We use a product suitable for the stone where the specification names one.
Perimeter joints at frames and structure
These frame-to-structure joints take a lot of movement and weather. They are cut out, cleaned, backed and resealed using a sealant classified for that use.
Should maintenance staff do it?
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, which is what makes a joint last.
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. For that reason, many FMs and contractors use a sealant specialist from the outset.