Shetland Islands · Scotland
Window & door mastic in Baltasound, Shetland Islands
Window mastic for Baltasound and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Whistling draughts around closed windows
- Gaps between the frame and the inside reveal
- Sealant in the wrong colour for the frame
Do you need window mastic in Baltasound?
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
Common reasons people contact us are:
- Mastic that has split away from the wall
- Cold air getting in at the frame edge
- Untidy mastic left by window fitters
- Sealant in the wrong colour for the frame
For an older house near a landmark such as Kirkhoull, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- What happens if the job turns out different
- Whether all the old sealant comes out first
- When the joint can take water or movement
- How the joint is cleaned and prepared
How we handle window mastic in Baltasound
A window frame and the wall around it expand and shrink at different rates. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That is why the joint needs a flexible, low-modulus sealant rather than something rigid. Typical jobs include cold air getting in at the frame edge and untidy mastic left by window fitters, on uPVC windows, timber windows & doors and composite doors.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Baltasound (ZE2)
- Wider area
- Shetland Islands
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What the job involves on each surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We seal the frame and let you know about anything else.
What happens if it’s left?
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. In an older home around Baltasound, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll go through it with you.
Why choose Mr Mastic in Baltasound
- Any old sealant cut out fully, not covered over
- Rated 4.9 stars on Google
- Colour agreed with you before we start
- An ARBOMaster approved applicator
Read how sealant jobs are priced and customer reviews.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
How it works
Before we leave, we go over the finished joints with you. The work normally takes most of a day for a typical house, less for a few frames, depending on how much there is to do. For a place like Baltasound, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
How to prepare
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we’re working on
Getting a quote
Need a quote? Please drop us a line at info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Baltasound homes and the weather
Baltasound is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Work on the islands has to be planned around ferry crossings and the weather, so give us as much notice as you can.
For site and facilities teams at buildings such as Baltasound Junior High School, larger buildings have plenty of frames, and the mastic around each one ages.
Baltasound is in the Shetland Islands. Homes, rented property, offices and hotels in Baltasound is covered for window mastic, old or new, large or small. Every job comes with our one-year guarantee. Our the Shetland Islands coverage runs to 63 places, Baltasound among them.
Here we cover the ZE2 postcode area for window mastic. If you need window mastic at a property on Setters Hill Estate, Curlew Avenue and Cormorant Way or anywhere close by, our applicators can take on the job. We also cover the places around Baltasound: Haroldswick (3 miles north-east), Clivocast (6 miles south), Cullivoe (6 miles south-west), Houbie (11 miles south) and Camb (12 miles south-west). As one of the bigger places in the Shetland Islands, Baltasound has homes, rented property and businesses of every kind. For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
What’s near Baltasound
Nearby you will also find Unst Boat Haven (2.1 miles north-east). Open spaces near Baltasound include Loch of Beiton and Muckle Heog.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Make sure the drainage slots are not blocked
- Air rooms to keep condensation down around windows
- Do not use solvent cleaners on the joint
- Check the mastic once a year
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
Leaks generally show up in wet, windy weather, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
FAQs for Baltasound
Can you do window mastic in Baltasound?
Yes, Baltasound is within the area we cover. Our work covers the whole of Scotland. You can send an email to info@mrmastic.co.uk and tell us what needs doing.
Is Baltasound within the area you cover?
Yes, we do. We work across all of Scotland, islands included, and smaller places are part of that. Longer journeys are simply planned in advance.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages.
Do the sealants smell?
There can be a smell while the sealant cures. Ventilation helps.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can I paint over the new sealant?
Most silicone cannot be painted. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.