East Lothian · Scotland
Sand mastic for sash & case windows in Belhaven, East Lothian
Our applicators work in Belhaven on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Weathered mastic on the most exposed windows
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps between timber frames and stone or brick
What we’re called out for in Belhaven
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows.
Common reasons people contact us include:
- Mastic dropping out of the joint
- Tired mastic found when preparing windows for paint
- Open joints round the window box
- Gaps round a timber door in stone or brick
If you live in an older home near Belhaven Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- Whether VAT is included
- When the joint can take water or movement
- Which colour the sealant will be
- How the surfaces are prepared before sealing
How we handle sand mastic in Belhaven
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. We work on brick reveals, period & listed homes and stone surrounds, and people most often call us about gaps round a timber door in stone or brick and patchy fillers round a sash window.
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.
The work is covered for a year after we finish. If there’s a problem with it, please drop us a line at info@mrmastic.co.uk.
- Place
- Belhaven (EH42)
- Region
- East Lothian
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Keeping the joints in good condition
Looking after new joints is easy:
- Avoid heavy scraping on the mastic joint
- Ask a joiner to look at soft timber first
- Don’t paint over the new mastic
- Keep modern sealant off the mastic
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Quotes for sand mastic in Belhaven
Call for a quick quote. The main things that affect it are:
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
- The type of sealant required
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What to tell us for a quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- Any access issues, like height or stairs
- Where the job is, and your postcode
- Pictures of the joints, sent by email
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, send an email to info@mrmastic.co.uk.
Belhaven questions
Does the coastal weather in Belhaven affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Will you come out to Belhaven?
Yes. Belhaven is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
How long does sand mastic take?
Most jobs take anything from a few hours to a full day, depending on how many windows, including the preparation. Your quote will say how long we expect yours to take.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
Are you insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for a single window, longer for several. In smaller Scottish places, parking is generally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Move anything stored near the joints
How to get a quote
We quote each job on its own. Just drop us a line at info@mrmastic.co.uk with the details and send photos if you have them.
Advice
Leave it or put it right?
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
Why choose Mr Mastic in Belhaven
- One-year guarantee on every job
- Fully insured
- Homes, businesses and hotels
- ARBOMaster approved applicator
See our cost guide and what customers say.
Sand mastic in Belhaven: local notes
Belhaven is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Letting a property close to Dunbar station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Belhaven is about 1 mile west of Dunbar, in East Lothian. Our applicators cover sand mastic for homes and businesses in Belhaven and the surrounding area. Our area takes in 48 places across East Lothian. Our Edinburgh page covers work nearby (26 miles or so).
Postcode districts we cover here for sand mastic: EH42. Whether your property is on Back Road, Shore Road and High Street or anywhere close by, we can help. Main roads around Belhaven include the A1087, so getting to you is simple. We also cover the places around Belhaven: West Barns (1 mile south-west), Bielside (1 mile south-west), Dunbar (1 mile east), Broxburn (2 miles south-east) and Spott (2 miles south). Further out, we also cover Haddington (10 miles west), North Berwick (8 miles north-west), Longniddry (14 miles west), Gullane (11 miles west), East Linton (5 miles west) and Aberlady (12 miles west).
Local landmarks in Belhaven
The nearest railway station is Dunbar station, roughly 1.1 miles east of the centre. Nearby you’ll also find Dunbar Castle (1.1 miles north-east) and Dunbar Town House Museum and Gallery (1 mile east). Open spaces near Belhaven include Doon Hill.
Also in Belhaven
Landlord and commercial work in Belhaven
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
For anyone letting property in or around Belhaven, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
What the job involves on each surface
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.