East Lothian · Scotland
Sand Mastic in Dunbar
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Dunbar. Fully insured, ARBOMaster approved and guaranteed for a year.
- Patchy fillers round a sash window
- Draughts and rain around sash boxes
- Gaps where the frame meets the masonry
When to call us in Dunbar
Age is the main cause. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
If you can see any of these, it’s time to have the joints looked at:
- Crumbling sand mastic round a window
- Tired mastic found when preparing windows for paint
- A silicone bead on a sash window that spoils the look
- Gaps where the frame meets the masonry
For landlords with property near Dunbar station, any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- How long to leave it before use
- Whether you can choose the colour
- Whether all the old sealant comes out first
- What happens if they find a problem under the old sealant
Sand mastic in Dunbar, done properly
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. We work on timber door frames, period & listed homes and tenement windows, and people most often call us about mastic round period door frames that has failed and mastic dropping out of the joint.
In and around a place like Dunbar, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill, so the mastic there works hard.
All our work is covered by a one-year guarantee.
- Location
- Dunbar (EH42)
- Wider area
- East Lothian
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Also in Dunbar
How we quote for sand mastic
You will get a clear quote before work begins. It’s based on:
- The number of rooms or windows
- The number and length of the joints
- Any working-time requirements on site
- Which sealant suits the joint
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
What to tell us for a quote
To make quoting easier, let us know:
- Roughly how big the job is
- Where the job is, and your postcode
- The type of property
- Whether it has been sealed before
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, send an email to info@mrmastic.co.uk.
Why deal with it now?
Filling over old, loose mastic doesn’t last. We remove the loose material first so the new mastic stays put. 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.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
What you get with us
- Rated 4.9 stars on Google
- Arbo and Everbuild products
- Fully insured
- Approved under the ARBOMaster scheme
Read our cost guide and customer reviews.
How it works
You do not need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the job takes a few hours per window, depending on the condition of the joints for a typical job. Outside jobs in Dunbar need a dry day, because sealant won’t bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
- Mention any parking rules near the property
Ask for a quote
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before work begins.
Advice
Aftercare tips
A little care helps the new joints last. Our advice:
- Find out about consent before window work on a listed home
- Avoid heavy scraping on the mastic joint
- Keep sills and gutters clear so water drains away
- Keep modern sealant off the mastic
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
What the job involves on each surface
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Decisions on consent for listed homes
- Sashes that rattle, stick or won’t open
- Decayed frames that need repair
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Sash and case windows
- Brick reveals
- Timber door frames
- Stone surrounds
- Tenement windows
- Period & listed homes
Dunbar questions
Does living near the coast affect sand mastic in Dunbar?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Can you help a landlord with a rental near Dunbar station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Do you offer different sealant colours?
Generally, yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before any work starts.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Which is right for my windows, sand mastic or modern sealant?
Sand mastic generally suits period timber windows best. Modern frames normally suit a flexible sealant.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Windows and doors in Dunbar
Dunbar 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. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
For an older house near a landmark such as Abbey Church of Scotland, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Dunbar is about 26 miles east of Kirkcaldy, in East Lothian. Wherever you are in the EH42 postcode area, we can carry out sand mastic at your property. Across East Lothian, we cover 48 places, Dunbar among them. We also work in Edinburgh, about 27 miles from Dunbar.
Postcode districts we cover here for sand mastic: EH42. That includes homes and businesses on High Street, Bruntsfield Crescent and Leslie Way. You will find Dunbar on the A1087, which makes it straightforward to reach with everything needed for sand mastic. Close by, we work in Belhaven (1 mile west), Broxburn (1 mile south-east), West Barns (1 mile west), Bielside (1 mile west) and Spott (2 miles south). Larger places within reach include Haddington (11 miles west), North Berwick (9 miles north-west), Longniddry (15 miles west), Gullane (12 miles west), East Linton (5 miles west) and Aberlady (13 miles west). As one of the bigger places in East Lothian, Dunbar has homes, rented property and businesses of every kind.
Around Dunbar
We work in homes and buildings around The Volunteer Arms, among other places. There’s a railway station in Dunbar itself: Dunbar station. Other landmarks nearby include Dunbar Town House Museum and Gallery (under half a mile north-east) and Belhaven Hospital (0.7 miles west). The countryside around Dunbar includes Doon Hill.