Construction Mastic in Gremista
Mastic packages for new-build and refurbishment projects in Gremista. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Failed sealant in an existing building being refurbished
- Missed perimeter joints on a new elevation
- Snag items on joints that need redoing before handover
Need construction mastic in Gremista?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle construction mastic in Gremista
On a new build, the mastic package is one of the last trades through each area. Mastic Doctor takes on mastic packages for main contractors and developers, sealing plot by plot or floor by floor as areas are released. Most enquiries involve new external sealant already peeling away and sealant knocked or painted over by other trades, on brick and block movement joints, window and door perimeters and floor and skirting junctions. Whoever orders the work in Gremista, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In smaller places such as Gremista, building work tends to be single schemes rather than big developments. Exposed elevations in Scotland put facade and perimeter joints to work from day one, so the sealant choice matters.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Where
- Gremista (ZE1)
- Wider area
- Shetland Islands
- Guarantee
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
After the work
Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:
- Plan external elevations with the weather in mind
- Note which sealant went where at handover
- Brief following trades on areas that have been sealed
- Ask for joint and product checks before the package is urgent
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later. We can confirm the handover information you need when we quote.
Leaving the mastic snag list to the end squeezes everyone. Clearing snags area by area spreads the work out, and avoids a rush.
Doing it in-house
Redoing a failed joint typically costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
Questions we’re asked in Gremista
Can you take on a job in Gremista, on the island?
Yes. Islands are part of our area, Gremista included. Ferry times and the weather set the plan, so we ask for photographs and a full list first.
Is hospital work, at somewhere like Montfield Hospital, something you do?
Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Can you work to our specification?
Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.
Is the mastic package guaranteed?
Our workmanship carries a 12-month guarantee from sign-off. Damage by others after we’ve finished isn’t covered.
Do you do internal caulk as well as external mastic?
External and internal frame perimeters, caulking where it’s specified, sanitary silicone, kitchen joints and snagging before handover. The scope follows your specification.
What happens if old sealant might contain asbestos?
Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. Work pauses if suspect material is found, until it has been tested.
Can you work while the building is occupied?
Usually, yes. We phase the work so most of the building stays in use, with each area protected and signed.
What else we do in Gremista
How the job changes by surface
Kitchens and utility areas
On commercial kitchen fit-outs, hygienic sealants are often specified. We follow the specification and seal to a smooth, cleanable finish.
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. Depth is controlled with backing rod so the bead bonds to two sides only.
Building and refurbishing in Gremista
Gremista sits close to the coast, within about 1 mile. Coastal exposure means perimeter and cladding joints work harder than on an inland job, and the sealant, primer and backing need choosing with that in mind. For an island location such as Gremista, work is planned around ferry crossings and the weather. With drawings and the programme in hand, the whole mastic package comes with us.
For contractors at a school such as Anderson High School, sealing has to be finished before term starts. New units and refits on sites such as Lower Black Hill Industrial Estate (under half a mile south-west of Gremista) need their panel and perimeter joints sealed to the specification. Work at a hotel such as The Shetland Hotel (to the south of Gremista) tends to be programmed around bookings, mastic included.
Gremista is about 1 mile north of Lerwick, in the Shetland Islands. Across the ZE1 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. 63 places across the Shetland Islands fall within our area, including Gremista.
Commercial sites across ZE1 are covered for mastic packages. Among the streets we cover are Gremista Road, Arlanda Yard and Holmsgarth Brae, and sites on any of them can send details for a fixed quote. Close to Gremista, our area also takes in Heogan (1 mile east), Lerwick (1 mile south), Sound (2 miles south), Gunnista (2 miles east) and Veensgarth (2 miles west). 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.
Landmarks near Gremista
We work on buildings around Gilbertson Park and the streets around them. Well-known places in the area include Montfield Hospital (1.2 miles south) and Shetland Textile Museum (under half a mile south). For a walk, there’s Loch of Kebister and Setter Hill.
On site: what to expect
We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. Travel to smaller Scottish places like Gremista is planned so the job is finished in one visit where possible, which is why we ask for photos and a full list first. External joints need a dry spell as well.
- Drawings, specification and programme come to us.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Plots or floors are sealed as they’re handed over.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Preparing the site
- Share your working hours and any access restrictions
- Tell us which areas need to stay in use
- Make sure the joints can be reached
Quotes
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, phone 01277 525 020 or use the quote form.
Advice
What happens if it’s left?
Leaving mastic to whichever trade is fitting the element can look cheaper on paper. In practice it often means different standards, gaps in responsibility and snags nobody owns. One mastic subcontractor for the lot keeps it simple. Renewing every failing joint on one visit is the sensible approach for a place like Gremista. Send photos and we’ll quote for everything together.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
What you get with us
- CSCS-carded applicators
- Colours chosen to suit frames, cladding or finishes where possible
- Products installed to the manufacturer’s instructions
- Public liability insurance in place
Read how commercial sealant jobs are priced and how we’re accredited.
Work for main contractors and building owners
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Sites in Gremista can sit alongside others in a wider programme across the Shetland Islands.
For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.