Shetland Islands · Scotland
Remedial sealant & repairs in Sandwick, Shetland Islands
Professional remedial sealant in and around Sandwick, with old sealant always removed completely and a 12-month guarantee.
- Leaks that keep coming back after resealing
- Sealant applied over old sealant that has lifted
- Dark patches showing through the sealant
About our remedial sealant in Sandwick
The wrong product in the wrong joint fails however neatly it’s applied. Out it comes, and in goes a sealant suited to the job. If you’re dealing with sealant that came away because the surface wasn’t prepared and kitchen joints letting water behind the worktop, we can put it right.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses. Older buildings can move a little, and that shows first in cracked grout and split sealant.
You’re covered for a year from the day we finish. If anything is not right with it, send an email to info@mrmastic.co.uk.
- Location
- Sandwick (ZE2)
- Region
- Shetland Islands
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Sandwick questions
Is remedial sealant in Sandwick guaranteed?
All our work, in Sandwick and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Can you do remedial sealant in Sandwick?
Yes, Sandwick is within the area we cover. We work across all of Scotland. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll send you a clear quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Someone sealed over the old bead. Can you fix it?
Yes. Both layers come out; new silicone does not bond to old silicone, which is why over-sealing fails.
Do you remove the old sealant?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
How long does the work take?
A little longer than a standard reseal. Most jobs take a few hours, and we confirm the time with your quote.
How long before the joint can be used?
Different products cure at different speeds, so please follow the time we give you when we finish.
What else we do in Sandwick
Sandwick homes and their sealant
Sandwick is close to the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, which wears sealant and grout out faster than in a quiet home. Work on the islands has to be planned around ferry crossings and the weather, so the more notice, the better.
Whether the job is in Sandwick itself or nearby, the right material for each joint matters as much as a neat finish.
Sandwick is about 14 miles north of Lerwick, in the Shetland Islands. Homes, rented property, offices and hotels in Sandwick can book us for remedial sealant. Every job comes with our one-year guarantee. Sandwick is one of 63 places in the Shetland Islands we cover.
Postcode districts we cover here for remedial sealant: ZE2. That includes homes and businesses on Rocky Road, Saeter and Harlsdale and the roads around them. If you’re just outside Sandwick, we cover Clate (1 mile south), Symbister (1 mile north-east), Hamister (1 mile north), Huxter (1 mile east) and Tripwell (2 miles north-east). We also work in nearby towns such as Lerwick (14 miles south), Sound (14 miles south) and Brae (12 miles west). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Landmarks near Sandwick
Open spaces near Sandwick include Ward of Clett and Loch of Sandwick.
How the job changes by surface
Windows & doors
Smeared or badly matched mastic can be cut out and redone neatly, matched to the frame colour.
Worktops & kitchens
Shrunken worktop sealant leaves a gap that lets water into the back edge. We strip it, degrease the joint and reseal in a colour to suit.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What affects the cost of remedial sealant
There’s no set price list. What we look at:
- Any mould that needs treating
- The number of rooms or windows
- Whether the work is at height
- Working hours on commercial sites
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- What’s wrong with the joints now
- Any access issues, like height or stairs
- The address or postcode of the job
- The rough size of the job
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Signs you need remedial sealant in Sandwick
One of the commonest remedial jobs is sealant on top of sealant. New silicone can’t stick to the old bead, so the top layer lifts and water and mould collect between the two.
Look out for any of the following:
- Sealant that came away because the surface wasn’t prepared
- Products that weren’t meant for the joint
- Wide, uneven beads that look worse than the old ones
- Gaps opening along the back of the worktop
Around Sandwick, as everywhere, remedial sealant is only as good as the preparation behind it.
Questions to ask before you book
- Which sealant they’ll use, and why
- How long the guarantee is
- Whether they’re fully insured
- Whether you can choose the colour
Landlord and commercial work in Sandwick
Letting agents often deal with us directly. Tell us the address, the job and how access works.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
What we do, step by step
At the end, we look at the finished work together. The work normally takes a few hours for a typical bath or shower, longer where several layers have been applied, depending on the size of the job. Outdoor work around Sandwick depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- We clean and degrease the joint and look for signs of movement or water.
- Once dry, a suitable sealant is applied and tooled.
- We give you the cure time and explain what caused the failure.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- Mention any sign-in or site rules at work premises
Getting a quote
We quote each job on its own, so start by telling us what you need. Simply drop us a line at info@mrmastic.co.uk and describe the job.
Related advice
Looking after it afterwards
After the cure time, these simple habits help:
- Don’t point over movement joints
- Do not add new sealant on top of old
- Check ceilings under showers for marks
- Get the cause of a repeat leak found before resealing
Ventilation keeps mould away from the new bead: use the extractor or open a window after showering.
Mould trapped under over-sealed joints spreads unseen. When it finally shows, the whole bead needs to come out.