Shetland Islands · Scotland
Window & door mastic in Mid Yell, Shetland Islands
Mastic around window and door frames, sills and patio doors for Mid Yell, backed by a 12-month guarantee. Ask us for a quote.
- Black, perished sealant on frames
- Cracked or shrunken mastic around the frame
- A bead that does not match the frame
Window mastic in Mid Yell
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through. If the draught is through the window seals instead, we’ll tell you. We work on uPVC windows, window sills and timber windows & doors, and the jobs we see most are hard, cracked sealant around windows and gaps between the frame and the inside reveal.
Mastic can only go onto a dry joint, so outside work in Mid Yell depends on the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
All of our work is guaranteed for twelve months, in Mid Yell and everywhere else we cover.
- Place
- Mid Yell (ZE2)
- Region
- Shetland Islands
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What happens if it’s left?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. In a place like Mid Yell, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
Commercial jobs are quoted on the same basis as homes: 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 will explain what it covers.
Why book with us
- Any old sealant cut out fully, not covered over
- Quality sealants from Arbo and Everbuild
- A choice of colours where the product allows
- You choose the colour before work begins
Take a look at what affects the cost and our reviews.
Aftercare tips
After the cure time, these simple habits help:
- Keep paint and stain on wooden frames in good order
- Keep paint off silicone joints
- Avoid harsh chemicals near the mastic
- Wash the frames with mild soapy water
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 sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Signs you need window mastic in Mid Yell
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. A sealant that can’t keep up eventually tears.
Signs it’s time to call us include:
- Damp patches on the reveal after heavy rain
- Hard, cracked sealant around windows
- Gaps where the sill meets the wall
- White mastic on grey or black frames
If you look after a building such as Mid Yell Junior High School, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- The length of the guarantee
- Whether they seal over old material or remove it
- How the colour is chosen
Other services in Mid Yell
Different surfaces, different methods
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We will tell you which suits your home.
Landlords, agents and businesses in Mid Yell
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What happens on the day
We bring everything the job needs with us. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes anything from an hour or two to a full day, depending on how many frames there are. In smaller Scottish places, parking is normally 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 start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Mention any tricky access
- Mention any parking rules near the property
- Keep children and pets away from the work area
How to get a quote
Need a quote? Please email us 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.
Advice
Questions from Mid Yell
Is Mid Yell in your area for window mastic?
Yes, Mid Yell is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Is window mastic in a coastal place like Mid Yell any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can you seal over the old sealant?
No. The old sealant always comes out first, so the new sealant bonds properly.
I rent my home. Can I book you?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Do you work for letting agents?
Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.
Window mastic in Mid Yell: local notes
Mid Yell is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around window and door frames, especially on the side facing the sea. Island jobs need planning around ferries and the weather, so the more notice, the better.
If you live in an older home near St John's Church And Churchyard, the joint between an old wall and a newer frame is usually the first place rain gets in.
Mid Yell is in the Shetland Islands. Jobs in Mid Yell get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 63 towns and villages across the Shetland Islands, from the larger towns to small villages.
All of ZE2 is covered for window mastic, from the main roads to the quietest streets. Window mastic is available to properties on Links House, Sunny Side and Burrapark and the roads around them. We also cover the places around Mid Yell: Camb (1 mile north), Aywick (3 miles south), Houbie (7 miles east), Burravoe (7 miles south) and Clivocast (8 miles north-east). Island and remote addresses take a little more planning, so please mention your location when you drop us a line at info@mrmastic.co.uk.
Landmarks near Mid Yell
Open spaces near Mid Yell include White Hill of Vatsetter and Loch of Vatsetter.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.