Gunnista construction mastic
Mastic packages for new-build and refurbishment projects across Gunnista, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Old sealant on a refurbishment that needs stripping before new work
- New external sealant already peeling away
- Oversized or tapered gaps around new frames
Need construction mastic in Gunnista?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Construction mastic for commercial buildings in Gunnista
External mastic depends on the weather in a way most internal trades don’t. Each sealant has a temperature range, and damp, frost or condensation on frames stops work, so we plan elevations with the forecast and the programme in mind. Internal areas can normally carry on while the outside waits. We work on brick and block movement joints, cladding and panel joints and internal decorators’ caulk, and what we are called in for most is inconsistent sealant finishes from plot to plot and frame perimeters left unsealed or poorly sealed. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Gunnista, preparation and product choice get the time they need.
Construction around smaller Scottish places like Gunnista is often one-off schemes: a school, a health centre, a hotel extension or a few houses. Exposed elevations in Scotland put facade and perimeter joints to work from day one, so the sealant choice matters.
We stand by our work: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.
- Where
- Gunnista (ZE2)
- Region
- Shetland Islands
- Guarantee
- 12 months on every job
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Why deal with it now?
A quick bead over a damaged joint can get an area past inspection. Sealant can’t grip a contaminated or existing bead. Damaged joints are removed and resealed from clean faces. 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.
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.
Why choose Mastic Doctor in Gunnista
- Standard and matched colours in many product ranges
- RAL and finish matching where the product range allows
- Fully insured, including public liability cover
- A Constructionline member, so easy to vet
Read how commercial sealant jobs are priced or our accreditations.
Other services in Gunnista
For managing agents and facilities managers
Building owners and managing agents use us on everything from one building to a spread of sites around Gunnista. One quote can cover more than one site, which keeps the paperwork simple.
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
After the work
A few simple habits keep the new joints working:
- Bring the mastic contractor in after the last trades are through
- Keep scrapers and abrasive pads off new beads
- Plan external elevations with the weather in mind
- Ask installers to correct oversized gaps first
If a joint is damaged after sealing, flag it early. We can return to clear snags before handover, priced as part of the package or separately.
Sealing outside when the joint is damp or too cold leads to poor adhesion. Holding off until conditions suit avoids callbacks, so we plan external work with that in mind.
Construction mastic around Gunnista: points for this area
With the shore within about 1 mile, Gunnista counts as a coastal location. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, so we check the specified product suits the exposure before the first bead. Island jobs, Gunnista among them, are planned around the ferry and the forecast. Everything for the package travels with us, so drawings and quantities matter.
For contractors refurbishing units at places like North Ness Business Park, which lies south-west of Gunnista, the mastic covers cladding panels, roller-door and window perimeters. Hospital estates such as Montfield Hospital (2.2 miles 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. Hotel extensions and refits, at places such as Maryfield House Hotel, 1.3 miles to the south-west of Gunnista, usually run between busy periods, so the sealing is squeezed into short windows.
Gunnista is in the Shetland Islands. Anywhere in ZE2, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Gunnista is one of 63 places we cover in the Shetland Islands for mastic packages.
We cover the ZE2 postcode districts. Just outside Gunnista, we also work in Heogan (1 mile west), Gremista (2 miles west), Grindiscol (2 miles south), Lerwick (2 miles south-west) and Sound (3 miles south-west). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.
Landmarks near Gunnista
A little further out are Shetland Museum (2 miles south-west) and Montfield Hospital (2.2 miles south-west). Not far away are Loch of Aith.
When it isn’t the sealant
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Deciding which fire-stopping product a penetration needs
- Frame gaps too wide for sealant, which the installer needs to correct
- Faulty frames rather than failed sealant
If in doubt, phone 01277 525 020 or email a schedule or drawings and we will say what we think.
Where we work in Gunnista
- Floor and skirting junctions
- Cladding and panel joints
- Brick and block movement joints
- Window and door perimeters
- Internal decorators’ caulk
- Sanitary and kitchen joints
When to bring in a specialist
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Gunnista: questions and answers
Is hospital work, at somewhere like Montfield Hospital, something you do?
Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.
Will you travel to Gunnista on the island?
Yes, Gunnista is within the area we cover. We cover the whole of Scotland. Island work is planned around ferry crossings and the weather, so photos and a full list before we travel are essential.
Do your applicators hold CSCS cards?
Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. Tell us what site paperwork you need and we’ll confirm with the quote.
How do you work with the site programme?
The programme sets the job. Share the release dates and we’ll match our work to them.
Do you work to architects’ specifications?
Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.
Can the sealant be colour-matched?
It depends on the product. Some ranges offer many colours, others very few, so we will confirm the colours available for the specified product with the quote.
Do you do fire-rated sealing on new builds?
Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. The design and sign-off belong to the designer, fire engineer or building control.
From enquiry to sign-off
Tell us your site hours and access windows and we’ll plan around them. While we are working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. For work around Gunnista, we aim for one trip, so photos, sizes and a full list matter. External joints need a dry spell as well.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Paperwork is agreed and applicators are inducted on site.
- Sealing follows the programme as areas are released.
- Problems we find, such as oversized gaps, are raised right away.
- Final snagging is completed and the 12-month guarantee applies.
Preparing the site
- Arrange parking or a loading space
- Tell us which areas need to stay in use
- Share your working hours and any access restrictions
Ask for a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.