Shetland Islands · Scotland
Heogan Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Heogan, backed by a 12-month guarantee. Call for a quick quote.
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
About our sand mastic in Heogan
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on tenement windows, brick reveals and timber door frames, and the jobs we see most are mastic round period door frames that has failed and crumbling sand mastic round a window.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Heogan (ZE2)
- Wider area
- Shetland Islands
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Why deal with it now?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why Heogan clients choose us
- Quality sealants from Arbo and Everbuild
- Any old sealant cut out fully, not covered over
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
What affects the quote in Heogan
Every job gets its own quote. This is what makes a difference:
- How much there is to do
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
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 will explain what it covers.
What we need to know
What to tell us when you ask for a quote:
- Whether it has been sealed before
- Pictures of the joints, sent by email
- What’s wrong with the joints now
- How we’d reach the joints
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job.
Heogan: your questions answered
Is Heogan in your area for sand mastic?
Yes. We work across all of Scotland, and Heogan is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing, and we will send you a clear quote.
Does the coastal weather in Heogan affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we’ll advise.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Is it messy?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
When to call us in Heogan
Rain on the window surround works into any crack and loosens it further. Exposed elevations usually fail first.
The problems people normally mention when they call are:
- Mastic that needs renewing before redecorating
- Gaps round a timber door in stone or brick
- Wind and rain getting in round a sash window
- Mastic dropping out of the joint
For an older house near a landmark such as St Margaret's Roman Catholic Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Before booking anyone
- Who turns up on the day
- What preparation is included
- Whether they’re fully insured
- What happens if they find a problem under the old sealant
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Check the mastic when you check the paintwork
- Clear gutters so water does not pour onto the windows
- Take care around the mastic when scraping paint
- Plan mastic work ahead of painting
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
What else we do in Heogan
What sand mastic looks like in Heogan
Heogan 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. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Island jobs need planning around ferries and the weather, so give us as much notice as you can.
For site and facilities teams at buildings such as Anderson High School, the mastic around its windows and doors needs looking after like any other building’s.
Heogan is in the Shetland Islands. From the centre of Heogan to the outskirts, we cover sand mastic for every kind of property. Across the Shetland Islands, we cover 63 places, and Heogan is one of them.
All of ZE2 is covered for sand mastic, from the main roads to the quietest streets. Neighbouring places we cover for sand mastic include Gremista (1 mile west), Gunnista (1 mile east), Lerwick (1 mile south-west), Sound (2 miles south-west) and Grindiscol (2 miles south-east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Near you in Heogan
Locally, jobs take us to homes and businesses close to Gilbertson Park. Other landmarks nearby include Shetland Textile Museum (0.9 miles west) and Montfield Hospital (1.3 miles south). The countryside around Heogan includes Loch of White Ayre and Setter Hill.
How the visit works
The work is kept neat and contained to the area we are working on, so you can get on with your day. Expect the work to take anything from a few hours to a full day, depending on how many windows, and we tell you how long to leave it before we go. Outdoor work around Heogan 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.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Clear items away from the joints we’re working on
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
For sand mastic in Heogan, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Honest limits
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
- Putty and glazing repairs
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before booking.
Where we work in Heogan
- Stone surrounds
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows
- Tenement windows
Work for landlords, hotels and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.