Shetland Islands · Scotland
Remedial sealant & repairs in Gunnista, Shetland Islands
Specialist remedial sealant for Gunnista: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Kitchen joints letting water behind the worktop
- Sealant that came away because the surface wasn’t prepared
- A second bead peeling off the first
Remedial sealant in Gunnista
A joint that keeps letting you down needs more than another bead. Send photos when you send an email to info@mrmastic.co.uk. We work on failed movement joints, leaking tray & enclosure joints and shrunken worktop sealant, and common reasons people get in touch are thick, messy sealant smeared over tiles and a second bead peeling off the first.
For a place like Gunnista, the job is the same as anywhere: everything old is cut out, the joints are cleaned and dried, and new sealant or grout goes in. We just plan the journey and access beforehand.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Gunnista (ZE2)
- Wider area
- Shetland Islands
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
How it works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for a typical bath or shower, longer where several layers have been applied from start to finish. For a place like Gunnista, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First we work out whether the problem is the sealant, movement or a leak.
- Each layer is cut out and the residue cleaned off.
- We treat any mould and dry the joint thoroughly.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you are told about anything else we found.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
How to get a quote
To get a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before we start.
Advice
What we can’t put right
New sealant cannot fix everything, and we will tell you before work begins. It won’t solve:
- Plumbing leaks behind walls or under trays
- Sealant in an older building that needs testing for asbestos first
- A tray or bath that’s cracked
If you are not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer before you book.
Surfaces we seal
- Failed movement joints
- Leaking tray & enclosure joints
- Expansion joints
- Mouldy bath & shower sealant
- Shrunken worktop sealant
- Botched or over-sealed joints
What affects the quote in Gunnista
Call for a quick quote. What matters most is:
- How much there is to do
- The old material and how stubborn it is
- Any mould that needs treating
- How easy the joints are to reach
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
Photos help, but a description is a good start. Please mention:
- Where the job is, and your postcode
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Other services in Gunnista
Different surfaces, different methods
Windows & doors
Failed frame mastic is often hard, cracked and in several layers. All of it is cut out and the frame and wall cleaned.
Over-sealed & botched joints
Thick, smeared sealant looks messy and hides problems. We strip it back so we can see the joint, then reseal neatly.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Your questions about remedial sealant in Gunnista
Is remedial sealant in Gunnista guaranteed?
All our work, in Gunnista and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Can you do remedial sealant in Gunnista?
Yes. We work across all of Scotland, and Gunnista is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing, and we will give you a clear quote.
What if resealing will not fix my leak?
That’s why we look for the cause first. If the fault is elsewhere, you’ll know before any work is done.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
What happens if it’s left?
Leaks that are left keep doing damage out of sight: wet floors, stained ceilings and swollen worktops. Dealing with the joint now is a small job by comparison. Around Gunnista, water from a failed joint in an older stone home can soak into timber and plaster.
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Why us?
- A choice of colours where the product allows
- Approved under the ARBOMaster scheme
- Over 20 years’ experience
- You choose the colour before work begins
Take a look at what affects the cost and what customers say.
Bathrooms and kitchens in Gunnista
Gunnista is close to the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, and sealant and grout that work that hard wear out sooner. Scotland’s water is generally soft, so sealant and grout see less limescale than in much of England. Mould is another matter: a bathroom that stays damp still turns sealant and grout black.
In the older streets around St Ola's Church and burial-ground, older homes can move a little, which is hard on rigid grout and tired sealant. Schools such as Anderson High School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
Gunnista is in the Shetland Islands. We carry out remedial sealant for homes and businesses in Gunnista and nearby. Gunnista is one of 63 places in the Shetland Islands we cover.
Our applicators cover all of the ZE2 postcode area for remedial sealant and the streets around it. Other places close to Gunnista include Heogan (1 mile west), Gremista (2 miles west), Grindiscol (2 miles south), Lerwick (2 miles south-west) and Sound (3 miles south-west). For island and remote addresses, the job takes a little more planning.
Around Gunnista
A little further out are Shetland Museum (2 miles south-west) and Montfield Hospital (2.2 miles south-west). Green spaces nearby include Loch of Aith.
Aftercare tips
A little care helps the new joints last. Our advice:
- Don’t wait for a small gap to become a leak
- Never seal over old silicone
- Air the bathroom so the sealant can dry
- Look for stains below bathrooms now and then
Go easy on the new sealant: no scraping, scouring pads or harsh chemicals.
A split movement joint lets rain into walls and floors, and the longer it’s left, the more the joint edges break down. A joint with sound edges is far easier to reseal.