Shetland Islands · Scotland
New-build mastic & snagging in Lerwick, Shetland Islands
New-build sealant joints in Lerwick need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Sealant that never bonded to the surface
- Joints pulling apart as timber shrinks
- Second-fix sealing on new plots
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
How we handle new build mastic in Lerwick
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. Typical jobs include new-build shower sealant that has already split and second-fix sealing on new plots, on skirting & floors, kitchens and bathrooms & en suites.
Around smaller Scottish places like Lerwick, new homes tend to be single plots or small developments. They need their sealant and floor joints finished just as carefully as on a big site.
Each job carries a 12-month guarantee, large or small.
- Location
- Lerwick (ZE1)
- Wider area
- Shetland Islands
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Also near Lerwick
Other services in Lerwick
What happens if it’s left?
A quick bead over the top of the old sealant can look fine at first, but it won’t bond to the old layer. Taking it all out and starting again is the only way to get a lasting seal. In a place like Lerwick, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and agree the price before starting.
What you get with us
- Anti-fungal silicone where joints get wet
- A choice of colours where the product allows
- A 12-month guarantee on all work
- Neat joints and a tidy finish
Take a look at what affects the cost and customer reviews.
Aftercare tips
So the new joints stay in good condition:
- Put sealant faults on your snagging list early
- Watch for new gaps as the house dries out
- Record problems with dated photos
- Keep water off fresh sealant until it has cured
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small.
FAQs for Lerwick
What guarantee comes with new build mastic in Lerwick?
All our work, in Lerwick and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Will you come out to Lerwick?
Yes, Lerwick is covered. We work across all of Scotland, islands included, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. Then drop us a line at info@mrmastic.co.uk.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all.
Can new sealant go on top of the old bead?
No. Over-sealing traps mould and water and soon fails. We remove every bit of the old bead before resealing.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Is it normal for sealant to crack in a new home?
Cracking in the first couple of years is common. Poor preparation at handover adds to it.
Do you work for letting agents?
Yes, often. Several properties can be quoted together.
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
How it works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to several days, depending on the number of plots. In smaller Scottish places, parking is usually less of an issue than access and distance. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Getting ready for the visit
- Clear items away from the joints we are working on
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
How to get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Related advice
Do you need new build mastic in Lerwick?
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart, and sealant that can’t keep up splits.
It’s worth asking for a quote if you see:
- Frame joints opening as the plaster dries
- Plot mastic for developers ahead of handover
- Sealant that never bonded to the surface
- Kitchen sealant that has pulled off the wall
Around Lerwick, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- Who does the work, and how experienced they are
- What preparation is included
- Which sealant they’ll use, and why
- What the cure time is
New build mastic in Lerwick: local notes
Lerwick is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so any gaps are best picked up early. Island jobs need planning around ferries and the weather, so the more notice, the better.
For jobs in and around Lerwick, choosing the right material for each joint is as important as a tidy finish.
Lerwick is in the Shetland Islands. Jobs in Lerwick get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across the Shetland Islands, we cover 63 places, Lerwick among them.
Jobs for new build mastic in ZE1 works the same way as everywhere else we cover. That includes homes and businesses on High Street, Market Street and Church Road. Main roads around Lerwick include the A969 and A970, so getting to you is simple. Neighbouring places we cover for new build mastic include Sound (1 mile south-west), Gremista (1 mile north), Heogan (1 mile north-east), Grindiscol (2 miles south-east) and Gunnista (2 miles north-east). As one of the bigger places in the Shetland Islands, Lerwick has every kind of property, from flats to offices. For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Around Lerwick
We work in homes and buildings around Gilbertson Park and Grand Hotel, among other places. Other landmarks nearby include Gilbert Bain Hospital (under half a mile south) and Shetland Museum (under half a mile north-east). The countryside around Lerwick includes Setter Hill and Clickimin Loch.
Surface by surface
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. The joint is stripped back before the new bead goes in and baths are filled before sealing.
Skirting and floors
Gaps under skirting are one of the most common new-build snags. A flexible sealant closes it without cracking like caulk.