Edinburgh · Scotland
Sand Mastic in St Leonard's
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in St Leonard's, with a one-year guarantee on every job. Call for a quick quote.
- Open joints round the window box
- Cracked mastic round a front door frame
- Old sand mastic that has cracked, crumbled or fallen out
What sand mastic looks like in St Leonard's
St Leonard's is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
For site and facilities teams at buildings such as St Trinnean's School, the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Edinburgh Waverley station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
St Leonard's is about 1 mile east of Edinburgh, in Edinburgh. St Leonard's gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. We cover 175 towns and villages across Edinburgh.
Here we cover the EH8, EH9 and EH16 postcode area for sand mastic. That includes homes and businesses on Dalkeith Road, Salisbury Road and Newington Road and the roads around them. Neighbouring places we cover for sand mastic include Newington (1 mile south-west), Buccleuch (1 mile north-west), Sciennes (1 mile west), Mayfield (1 mile south) and Burgh Muir (1 mile south-west). Within a short drive, we also cover Leith (3 miles north), Queensferry (9 miles west), Timber Bush (3 miles north), Southhouse (3 miles south), Newhaven (3 miles north) and Gilmerton (3 miles south-east).
Near you in St Leonard's
Locally, jobs take us to homes and businesses close to Duddingston Kirk, The Meadows and National Museums Scotland Library. Other local landmarks include Sciennes Primary School (0.5 miles west), 1 pub (under half a mile south-west) and Royal Blind School (0.7 miles south). The closest station to St Leonard's is Edinburgh Waverley station, about 1 mile north-west. Well-known places in the area include Cameron Toll Shopping Centre (1 mile south-east) and Deaconess Hospital (0.5 miles north-west). For a walk, there’s The New Leaf Co-op and Dunsapie Loch.
How we handle sand mastic in St Leonard's
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. We work on sash and case windows, brick reveals and timber door frames, and people most often call us about window mastic to renew ahead of painting and old cement repairs round a window that have failed.
Tenement flats in Scotland’s cities often have windows high above the street, where failing mastic is easy to miss. For a flat in St Leonard's, access is the first thing to plan.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- St Leonard's (EH8, EH9, EH16)
- Wider area
- Edinburgh
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Why deal with it now?
New sash windows are a major, costly change and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. Scottish rain finds any gap around a frame or wall joint, and in a tall building in St Leonard's, damp can travel a long way before it shows.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why us?
- We never seal over old sealant
- Trusted Arbo and Everbuild sealants
- Homes, businesses and hotels
- 4.9 on Google from 180+ five-star reviews
Different surfaces, different methods
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Decisions on consent for listed homes
- Sash cords, weights and draught-proofing of the sashes
If you are not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer.
Where we work in St Leonard's
- Sash and case windows
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
- Period & listed homes
How we quote for sand mastic
The price is agreed before any work begins. It’s based on:
- Any mould that needs treating
- Access and height
- How many rooms, windows or areas are involved
- The type of sealant required
Combining jobs into one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear quote for the lot.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Where the property is
- The type of property
- A few photos by email, if you can
- Any previous sealing or DIY work
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, drop us a line at info@mrmastic.co.uk.
When to call us in St Leonard's
Sand mastic slowly weathers. It hardens, cracks and starts to come away on the stone or timber.
If you can see any of these, it’s time to have the joints looked at:
- Gaps where the frame meets the masonry
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
- Old sand mastic that has cracked, crumbled or fallen out
Whitefoord House, about 0.9 miles north, is one of the historic houses in the wider area around St Leonard's.
Comparing quotes
- Who turns up on the day
- Whether the sealant suits the joint
- How long to leave it before use
- Which colour the sealant will be
The process
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes a few hours for a single window, longer for several for a typical job. In a city area like St Leonard's, parking may be by permit or pay-and-display, so tell us what’s nearby. If you are in a flat, let us know how we get in at the street door.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Clear items away from the joints we are working on
- Tell us about any water getting in
- Mention if the joints have been sealed before
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Towns and villages near St Leonard's
What else we do in St Leonard's
Landlord and commercial work in St Leonard's
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
St Leonard's questions
Can you help a landlord with a rental near Edinburgh Waverley station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can be quoted together. Just drop us a line at info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear price.
Does the coastal weather in St Leonard's affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we’ll explain why.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Do you cover St Leonard's?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.