East Lothian · Scotland
Sand mastic for sash & case windows in Prestonpans, East Lothian
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Prestonpans. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- A silicone bead on a sash window that spoils the look
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
About our sand mastic in Prestonpans
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. We work on brick reveals, stone surrounds and timber door frames, and people most often call us about draughty sash windows at the surround and mastic dropping out of the joint.
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.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Prestonpans (EH32)
- Region
- East Lothian
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Honest limits
We will not take on work that won’t last, so these are the limits:
- Crumbling stone or brickwork round the window
- Sashes that rattle, stick or won’t open
- Timber that has rotted
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer before booking.
Where we work in Prestonpans
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
- Stone surrounds
- Sash and case windows
Windows and doors in Prestonpans
Prestonpans 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. Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Managing a site like Preston Lodge High School? Then the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Prestonpans station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Prestonpans is about 8 miles north-east of Bonnyrigg, in East Lothian. From the centre of Prestonpans to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. 48 places in East Lothian are on our list, from the larger towns to small villages. There’s also a page for Edinburgh, about 9 miles away.
Postcode districts we cover here for sand mastic: EH32. Local streets include High Street, Station Road and Gardiner Square, and we cover them all. Main roads around Prestonpans include the B1348 and B1349, which makes travel easy. Other places close to Prestonpans include Prestongrange (1 mile south-west), Cockenzie and Port Seton (1 mile north-east), Seton (1 mile east), Tranent (2 miles south-east) and Elphinstone (2 miles south). We also work in nearby towns such as Musselburgh (3 miles west), Haddington (8 miles east), North Berwick (12 miles north-east), Longniddry (4 miles east), Gullane (8 miles north-east) and East Linton (13 miles east). Being one of East Lothian’s larger places, Prestonpans has homes, rented property and businesses of every kind.
Around Prestonpans
We work in homes and buildings around Gothenburg Tavern, among other places. Prestonpans has its own railway station: Prestonpans station. Nearby you will also find Seton Castle (1.9 miles east) and Battle of Prestonpans Jacobite Museum (under half a mile north-west).
How we quote for sand mastic
The quote reflects the job in front of us. We take into account:
- Which sealant suits the joint
- The number of rooms or windows
- The size of the job
- Access and height
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’ll go through it with you.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- What’s wrong with the joints now
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, email us at info@mrmastic.co.uk.
Common problems we fix in Prestonpans
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Common reasons people contact us are:
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
- Crumbling sand mastic round a window
- Gaps where the frame meets the masonry
In the older streets around Prestongrange Parish Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
What to look for in a quote
- How much experience the applicator has
- Are they insured?
- Which sealant they’ll use, and why
- Is VAT in the price?
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Find out about consent before window work on a listed home
- Have rotten timber repaired before new mastic goes in
- Clear gutters so water doesn’t pour onto the windows
- Leave the new mastic unpainted
Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Leave it or put it right?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. In an older home around Prestonpans, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- Neat joints and a tidy finish
- 180+ five-star Google reviews
- An ARBOMaster approved applicator
- Anti-fungal silicone where joints get wet
See our cost guide and customer reviews.
What we do, step by step
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we have agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a single window, longer for several. Somewhere like Prestonpans may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
- Let us know about parking restrictions
Getting a quote
Every job is quoted individually, so start by telling us what you need. Simply email us at info@mrmastic.co.uk and describe the job, and photos are welcome.
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Questions from Prestonpans
Can you help a landlord with a rental near Prestonpans station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Is sand mastic in a coastal place like Prestonpans any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Can I choose the sealant colour?
Normally, yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before we start.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We’ll explain what to expect before we leave.