Shetland Islands · Scotland
Sullom Sand Mastic
Professional sand mastic in and around Sullom, with every bit of old sealant taken out first and a one-year guarantee.
- Draughty sash windows at the surround
- Mastic dropping out of the joint
- Modern sealant on a period surround
Sand mastic for homes and businesses in Sullom
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you’re dealing with cracked mastic round a front door frame and window mastic to renew ahead of painting, we can put it right, on brick reveals, period & listed homes and tenement windows alike.
Outdoor sealant needs a dry surface, so window work around Sullom is planned around the weather. Tell us about access to all the windows and doors, upstairs included.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Sullom (ZE2)
- Region
- Shetland Islands
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
More services for Sullom
What happens if it’s left?
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. In an older home around Sullom, damp from a failed joint can get into timber and plaster.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Sullom
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
- Approved under the ARBOMaster scheme
- We leave the area clean and tidy
Take a look at our cost guide and customer reviews.
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours per window, depending on the condition of the joints. Somewhere like Sullom may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Clear the area around the work
- Try not to wet indoor joints just before the visit
Get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we will take it from there.
Read more
Sullom questions
Is Sullom in your area for sand mastic?
Yes. We work across all of Scotland, and Sullom is part of that. Just email us at info@mrmastic.co.uk with a few details of the job.
Does the coastal weather in Sullom affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We’ll tell you what to expect for your job.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like but the decision is theirs.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
How we quote for sand mastic
We don’t publish a price list, because jobs vary so much. What we look at:
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- Whether the work is at height
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
- Roughly how big the job is
Want a quote for sand mastic? Please drop us a line at info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.
When something else is needed
In fairness, some problems need a different trade:
- Timber that has rotted
- Sashes that need overhauling
- Crumbling stone or brickwork round the window
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before booking.
Joints and surfaces we work on
- Stone surrounds
- Tenement windows
- Brick reveals
- Period & listed homes
- Timber door frames
- Sash and case windows
What sand mastic looks like in Sullom
Sullom 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 is hard on the mastic around older windows and doors, especially on the side facing the sea. Island jobs need planning around ferries and the weather, so give us as much notice as you can.
Whether the job is in Sullom itself or nearby, the right material for each joint matters as much as a neat finish. In and around Sullom, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Sullom is in the Shetland Islands. Wherever you are in the ZE2 postcode area, we can carry out sand mastic at your property. Our area takes in 63 places across the Shetland Islands.
Work in ZE2 is quoted and booked the same way as anywhere else. Nearby, we also carry out sand mastic in Scatsta (2 miles east), Brae (3 miles south), Hogaland (4 miles north), Urafirth (5 miles north-west) and Hillswick (5 miles north-west). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Landmarks near Sullom
Not far away are Loch of Stack-houlls.
How to look after the new joints
So the new joints stay in good condition:
- Avoid heavy scraping on the mastic joint
- Look over the window mastic once a year
- Get any rot dealt with first
- Plan mastic work ahead of painting
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Surface by surface
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.