Shetland Islands · Scotland
Glazing & conservatory sealant in Gremista, Shetland Islands
Glazing silicone for conservatories, rooflights, glass panels and shower screens for householders, landlords and businesses in Gremista. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Stained, discoloured glazing silicone
- Conservatory leaks at frame and glazing joints
- Cracked silicone between glass panels
What sealant work cannot fix
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Condensation trapped between two panes
- A roof that has moved or dropped
- A broken pane or roof panel
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer before you book.
What we seal
- Glass-to-glass joints
- Rooflights
- Glass-to-frame joints
- Shower screens
- Glass balustrade bases
- Conservatory frames
Glazing silicone in Gremista, done properly
Cracked, stained or lifting silicone on glass spoils the look and lets water in. It comes off cleanly, without marking the glass before the new bead goes in. If you’re dealing with black or yellowed silicone on glass joints and silicone pulling away from the glass, we can help, on glass-to-frame joints, shower screens and glass balustrade bases alike.
Outdoor sealant needs a dry surface, so window work around Gremista is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
All our work is covered by our 12-month guarantee, wherever you are in the Shetland Islands.
- Where
- Gremista (ZE1)
- Region
- Shetland Islands
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why act early in Gremista
A new conservatory roof is a big job. Where the water is getting in through sealant renewing the joint is the simpler fix. If it’s the roof itself, we’ll tell you. In a place like Gremista, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why choose Mr Mastic in Gremista
- A 12-month guarantee on all work
- Full insurance on every job
- ARBOMaster approved applicator
- White, clear, grey or coloured to suit, where the product allows
See our cost guide or customer reviews.
Frames and glazing around Gremista
Gremista is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on glazing joints and frame seals, which can dry out and crack sooner where a building faces the weather. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
In the older streets around St Margaret's Roman Catholic Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Anderson High School, its window and door frames need their mastic kept sound, just like a home’s.
Gremista is about 1 mile north of Lerwick, in the Shetland Islands. From the centre of Gremista to the outskirts, we cover glazing silicone for every kind of property, from flats and houses to offices and hotels. We cover 63 towns and villages across the Shetland Islands.
All of ZE1 is covered for glazing silicone. We cover properties on Gremista Road, Arlanda Yard and Holmsgarth Brae. Neighbouring places we cover for glazing silicone include Heogan (1 mile east), Lerwick (1 mile south), Sound (2 miles south), Gunnista (2 miles east) and Veensgarth (2 miles west). Island and remote addresses take a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
What’s near Gremista
We work in homes and buildings around Gilbertson Park. Nearby you will also find Montfield Hospital (1.2 miles south) and Shetland Textile Museum (under half a mile south). The countryside around Gremista includes Loch of Kebister and Setter Hill.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
More services for Gremista
For landlords and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
For anyone letting property in or around Gremista, several properties can go on one quote. Just tell us the addresses and what each one needs.
What affects the cost of glazing silicone
There’s no set price list, because no two jobs are the same. The quote depends on:
- How much there is to do
- Mould in or behind the old joints
- Which sealant suits the joint
- The number of rooms or windows
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Asking for a quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- How many joints, rooms or windows are involved
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you are ready, send an email to info@mrmastic.co.uk.
What we do, step by step
You do not need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes anything from an hour or two to most of a day, depending on the size of the job for a typical job. Somewhere like Gremista may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First, we check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- We clean the glass and frame so the new silicone bonds.
- We lay the new bead and tool it smooth.
- Each joint is checked and, where possible, water-tested.
Before we arrive
- Let us know about parking restrictions
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
How to get a quote
If you’re in Gremista and need glazing silicone, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
How the job changes by surface
Glass-to-frame joints
The sealant must stick to glass and frame alike. We use a glazing silicone suited to each.
Glass balustrade bases
The base of a glass balustrade is generally sealed. Failed sealant there lets water collect.
Gremista questions
Is glazing silicone in a coastal place like Gremista any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you do glazing silicone in Gremista?
Yes. Our work covers the whole of Scotland, and Gremista is part of that. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear price.
What does glazing silicone cost?
It depends on the job, so we quote each one individually. For a quick quote, drop us a line at info@mrmastic.co.uk with a short description of the job.
Can you reseal the base of a glass balustrade?
Yes, where the base is finished with sealant. Send us pictures and we’ll take a look.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Can you fix a leaking conservatory?
That depends where the water is getting in. Sealant joints we can renew but roof and panel problems need another trade.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Is there any odour?
Possibly a little. It fades as the sealant cures, and ventilation helps.