Edinburgh · Scotland
Sand mastic for sash & case windows in Corstorphine, Edinburgh
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Corstorphine. Fully insured, ARBOMaster approved and guaranteed for a year.
- Open joints round the window box
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
How it works
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from a few hours to a full day, depending on how many windows. For a tenement in Corstorphine, work inside your flat is between us and you, while shared parts may need the factor or neighbours to agree. Tell us which applies when you book.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, drop us a line at info@mrmastic.co.uk.
Related advice
How we handle sand mastic in Corstorphine
Sand mastic doesn’t last for ever and gaps open up round the frame. We rake it out and renew it and tidies the surround. We work on timber door frames, tenement windows and brick reveals, and people most often call us about mastic worn away on windows facing the weather and patchy fillers round a sash window.
Corstorphine is in one of Scotland’s four big cities, where many older buildings are sandstone or granite. Stone needs a sealant that suits it, so acetoxy silicones, which can attack some stone, are best avoided.
Your job is guaranteed for a year, as with all our work.
- Location
- Corstorphine (EH12, EH4)
- Wider area
- Edinburgh
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Nearby places to Corstorphine
Also in Corstorphine
Landlords, agents and businesses in Corstorphine
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
When something else is needed
In fairness, some problems need a different trade:
- Planning or listed building consent (your local planning authority decides)
- Broken panes
- Sashes that rattle, stick or won’t open
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer before booking.
Where we work in Corstorphine
- Tenement windows
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Brick reveals
- Timber door frames
Questions from Corstorphine
How is work on the outside of a tenement in Corstorphine usually arranged?
It usually goes through the owners together, or through the factor if the building has one. The Tenements (Scotland) Act 2004 covers the common parts where the deeds don’t.
Do you work for landlords with property near South Gyle station?
Yes, we work for letting agents and landlords. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Do you come to Corstorphine?
Yes. We cover Corstorphine. To book, drop us a line at info@mrmastic.co.uk.
Are you fully insured?
Yes. We are fully insured.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
How long will you be here?
A typical job takes a few hours per window, depending on the condition of the joints, including preparation and clearing up. Your quote will say how long we expect yours to take.
What the job involves on each surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
What we’re called out for in Corstorphine
Shallow joints are a common cause. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
Keep an eye out for any of the following:
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
For an older house near a landmark such as Corstorphine Collegiate Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- Is the old sealant removed completely?
- What preparation is included
- Whether VAT is included
- Whether the sealant suits the joint
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
How to look after the new joints
After the cure time, these simple habits help:
- Don’t paint over the new mastic
- Renew mastic before redecorating the windows
- Avoid patching sand mastic with silicone
- Find out about consent before window work on a listed home
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry so early renewal protects both.
What sand mastic looks like in Corstorphine
Corstorphine is within about 3 miles 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. Under the Tenements (Scotland) Act 2004, shared parts of a tenement, such as the roof and outside walls, are looked after by the owners together, and many buildings use a factor to arrange it. Who owns the windows depends on the title deeds.
For landlords with property near South Gyle station, any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Craigmount High School, larger buildings have plenty of frames, and the mastic around each one ages.
Corstorphine is about 3 miles west of West End, in Edinburgh. Anywhere in EH12, we cover sand mastic for homes and businesses. 175 places in Edinburgh are on our list, large and small.
Jobs for sand mastic in EH12 and EH4 is quoted and booked the same way as anywhere else. We cover properties on Manse Road, Gordon Road and Station Road. Neighbouring places we cover for sand mastic include Wester Broom (1 mile south-west), Carrick Knowe (1 mile south-east), South Gyle (1 mile south-west), Drumbrae (1 mile north) and Clermiston (1 mile north). We also work in nearby towns such as Edinburgh (3 miles east), Leith (5 miles north-east), Bonnington (5 miles north-east), Greenside (4 miles east), Broughton (4 miles east) and Bellevue (4 miles east).
Landmarks near Corstorphine
Typical jobs here are in homes near The Torfin pub and Saughton Park, among other places. Corstorphine’s nearest station is South Gyle station, about 0.7 miles south-west. A little further out are Craigcrook Castle (1.1 miles north-east) and The Gyle Shopping Centre (1.1 miles west). Open spaces near Corstorphine include The New Leaf Co-op and Corstorphine Hill.