Shetland Islands · Scotland
Window & door mastic in Scalloway, Shetland Islands
Window mastic in Scalloway from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old mastic that has gone black or come away
- Mastic that has split away from the wall
- Rushed sealant from a window installation
How we handle window mastic in Scalloway
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on patio & French doors, composite doors and uPVC windows, and people most often call us about hard, cracked sealant around windows and gaps where the sill meets the wall.
Outdoor sealant needs a dry surface, so window work around Scalloway is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
You are covered for a year from the day we finish. If anything isn’t right with it, send an email to info@mrmastic.co.uk.
- Where
- Scalloway (ZE1)
- Wider area
- Shetland Islands
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What affects the quote in Scalloway
We do not publish a price list, because jobs vary so much. What we look at:
- When we can work, for business premises
- Access and height
- The type of sealant required
- The size of the job
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
You don’t need to know the technical terms. It helps if you can tell us:
- How we’d reach the joints
- A few photos by email, if you can
- Any previous sealing or DIY work
- What’s wrong with the joints now
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, email us at info@mrmastic.co.uk.
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Do not use solvent cleaners on the joint
- Check the mastic once a year
- Make sure the drainage slots are not blocked
- Ventilate rooms so frames do not stay wet inside
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
Also near Scalloway
More services for Scalloway
What window mastic looks like in Scalloway
Scalloway 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 the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Island weather, with its wind and salt spray, is tough on the mastic around window and door frames.
For an older house near a landmark such as Methodist Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Scalloway is in the Shetland Islands. Every kind of property in Scalloway is covered for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our the Shetland Islands coverage runs to 63 places, Scalloway among them.
Every address in ZE1 is covered for window mastic, from the main roads to the quietest streets. You will find streets such as Main Street, Craigpark Road and Meadowfield Road. Being close to the B9074, Scalloway is simple for us to get to for window mastic. We also cover the places around Scalloway: Gulberwick (2 miles east), Hamnavoe (3 miles south-west), Veensgarth (3 miles north-east), Sound (4 miles east) and Toogs (4 miles south-west). Scalloway is among the bigger towns we cover in the Shetland Islands. For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Local landmarks in Scalloway
Typical jobs here are in homes near Fisherman's Arms and the streets around them. Well-known places in the area include Castle Holm (4.9 miles north) and Gilbert Bain Hospital (4.3 miles east). Green spaces nearby include Hill of Berry and Loch of Burwick.
Different surfaces, different methods
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall.
Composite doors
A composite door normally sits in a plastic outer frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
Questions from Scalloway
Does the coastal weather in Scalloway affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is Scalloway within the area you cover?
Yes. Scalloway is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
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.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Are you insured?
Yes. We’re fully insured.
When to call us in Scalloway
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, leaving a hairline gap down one side.
Keep an eye out for any of the following:
- Gaps left after new windows were fitted
- Black, perished sealant on frames
- Draughts coming in around windows and doors
- Hard, cracked sealant around windows
Around Scalloway, as everywhere, window mastic is only as good as the preparation behind it.
Questions to ask before booking
- Whether they seal over old material or remove it
- What guarantee comes with the work
- Whether you can choose the colour
- Whether VAT is included
Leave it or put it right?
Redecorating is a good moment to renew the mastic. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. In a place like Scalloway, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Scalloway
- Sanitary silicone with an anti-fungal additive in wet areas
- 4.9 on Google from 180+ five-star reviews
- Sealant colour chosen to suit
- Any old sealant cut out fully, not covered over
Read our cost guide or our reviews.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
How the visit works
The work is kept neat and contained to the area we are working on. Expect the work to take anything from an hour or two to a full day, depending on how many frames there are. For a place like Scalloway, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Try not to wet indoor joints just before the visit
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
How to get a quote
For window mastic in Scalloway, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.