Mastic sealing for building owners and managing agents in Gremista, Shetland Islands
Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Gremista and the surrounding area. Send photos or drawings for a fixed quote.
- Movement joints with sealant missing
- Cracked, hardened mastic round windows on a block
- Draught complaints from residents or tenants
Mastic sealing in Gremista
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
For managing agents and facilities managers
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Gremista. One quote can cover more than one site, which keeps the paperwork simple.
For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules.
How we handle mastic sealing in Gremista
Owners and agents normally inherit a building’s mastic rather than choose it and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow along with complaints. Most enquiries involve the same joint failures repeated across a portfolio and brittle perimeter mastic across a building, on window and door perimeters on blocks, communal kitchens and washrooms and external wall and movement joints. Looking for mastic applicators who cover Gremista? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Around smaller places such as Gremista, buildings managed by landlords and associations are often small groups of flats, sheltered housing and halls. Exposed walls take Scottish weather hard, and frame mastic shows it first.
Every job we finish is backed by a 12-month workmanship guarantee, in Gremista as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Gremista (ZE1)
- Region
- Shetland Islands
- Guarantee
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Signs you need mastic sealing in Gremista
In communal areas, joints take knocks from bins, bikes, buggies and deliveries, and low-level joints get damaged. Cleaning products add to the wear.
Most enquiries start with something like this:
- A mix of products and colours from past repairs
- No planned programme for sealant
- Draught complaints from residents or tenants
- Leaks at window and door perimeters
If you own or manage units on a site such as Lower Black Hill Industrial Estate, less than half a mile south-west of Gremista, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
What to look for in a quote
- Whether primer will be used where the manufacturer specifies it
- How they’ll work around occupants
- Will RAMS and insurance details be available?
- What level of public liability insurance do they hold?
Blocks and managed buildings in Gremista
With the shore within about 1 mile, Gremista counts as a coastal location. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints; plan inspections around that. For an island location such as Gremista, work is planned around ferry crossings and the weather. We group island buildings so each crossing covers as much as possible.
Older community buildings, St Margaret's Roman Catholic Church among them, often have frames of mixed ages whose mastic varies. Schools and community buildings such as Anderson High School need frame and external mastic kept sound like any building.
Gremista is about 1 mile north of Lerwick, in the Shetland Islands. Commercial clients in Gremista can call on us for mastic joints, as part of our coverage of the Shetland Islands. Our the Shetland Islands coverage takes in 63 places, large and small.
Postcode districts covered here: ZE1. Streets here include Gremista Road, Arlanda Yard and Holmsgarth Brae, and sites on any of them can send details for a fixed quote. If your building is just outside Gremista, we cover Heogan (1 mile east), Lerwick (1 mile south), Sound (2 miles south), Gunnista (2 miles east) and Veensgarth (2 miles west). Where a site is remote or on an island, travel and materials need planning ahead.
Near you in Gremista
Locally, jobs take us to sites close to Gilbertson Park and the streets around them. Other landmarks nearby include Montfield Hospital (1.2 miles south) and Shetland Textile Museum (less than half a mile south). Not far away are Loch of Kebister and Setter Hill.
Quoting for work in Gremista
To price the job, we consider:
- Working within restricted access windows
- How much there is to seal
- Whether old sealant has to be cut out first
- Access and working height
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Details that help us quote
For an accurate fixed quote, we need a clear picture of the site. Useful things to include:
- Asbestos survey details if the building is older
- Approximate linear metres or a joint schedule
- The type of building and who uses it
- Access details, including height
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.
Our process
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. For work around Gremista, we aim for one trip, which is why we ask for photos and a full list first. Outside work also needs a suitable weather window.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Getting the site ready
- Tell us which areas need to stay in use
- Confirm the product named in the specification
- Let us know about inductions and permits
Quotes
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or call 01277 525 020 or use the quote form to discuss it first.
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FAQs: Gremista
Does the sea air around Gremista change the choice of sealant?
It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.
Can you take on a job in Gremista, on the island?
Yes. Every Scottish council area is within our area, and that includes island locations such as Gremista. We plan island jobs around the ferry and the forecast, and bring everything the job needs on the first crossing.
Do you do block-wide mastic programmes?
We can. We survey and price each building, then work through them in order starting wherever is most urgent.
How do you handle work on occupied blocks?
We plan around people living or working in the building. We agree the programme so you can notify occupiers and communal access is kept open.
How do I request a quote?
There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.
What do you charge?
Every job gets its own fixed quote. For yours, call the office on 01277 525 020 or send details through our quote form with a description of the work.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
How the job changes by surface
Tenement and older buildings
Some old mastics in pre-2000 buildings contain asbestos and the register is checked before anything is disturbed. Suspect material is tested before work continues.
External movement joints
External movement joints take up expansion and contraction. Failed sealant in a movement joint lets water in.
Leave it or put it right?
Sealing over failed mastic looks tidy for a while. It doesn’t bond and normally fails within a short time. Cutting out and resealing properly does it once. Buildings that aren’t in daily use, such as halls and seasonal premises, may let water in unnoticed, so a failed joint has time to cause damage. Resealing early avoids that.
There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.
Why appoint us
- One phone line for London, the South East and Scotland
- A range of standard colours, depending on the product
- Constructionline member for supplier checks
- Workmanship guaranteed for 12 months
Read what affects the cost and our accreditations and insurance.