Dundee · Scotland
Mill of Mains Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Mill of Mains, backed by a one-year guarantee. Ask us for a quote.
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
- Tired mastic found when preparing windows for paint
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
About our sand mastic in Mill of Mains
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on tenement windows, stone surrounds and brick reveals, and common reasons people get in touch are mastic worn away on windows facing the weather and patchy fillers round a sash window.
Scotland’s cities are full of stone-built tenements and terraces, in sandstone or granite. Natural stone around older windows needs a sealant that won’t mark or attack it, which generally means a neutral-cure product or a traditional sand mastic rather than an acetoxy silicone.
All our work comes with a 12-month guarantee, wherever you are in Dundee.
- Location
- Mill of Mains (DD4, DD3)
- Wider area
- Dundee
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. For a tenement in Mill of Mains, work inside your flat is between us and you, while shared parts may need the factor or neighbours to agree. It helps to know which it is when you get in touch.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
- Mention if the joints have been sealed before
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Advice
Your questions about sand mastic in Mill of Mains
Do you work for landlords with property near Dundee station?
Yes, we work for landlords and letting agents. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before any work starts.
Does living near the coast affect sand mastic in Mill of Mains?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Where do you work from?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we’ll talk you through it.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do you come to Mill of Mains?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
When to call us in Mill of Mains
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
It’s worth asking for a quote if you see:
- Old cement repairs round a window that have failed
- Wind and rain getting in round a sash window
- Silicone on a period window that looks wrong
- Mastic worn away on windows facing the weather
For landlords with property near Dundee station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Questions to ask before booking
- How much experience the applicator has
- Is VAT in the price?
- How long to leave it before use
- What happens if they find a problem under the old sealant
What affects the cost of sand mastic
Every job gets its own quote. These are the things that affect it:
- How many areas need sealing
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- Which sealant suits the joint
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Helping us quote
Photos help, but a description is a good start. Please mention:
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- The problem you’ve noticed
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Windows and doors in Mill of Mains
Mill of Mains is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. With historic houses such as Camperdown House (about 3.4 miles west) nearby, there’s older building stock in the area around Mill of Mains as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Scottish School of Contemporary Dance are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Mains (St Ninian's) Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Mill of Mains is about 1 mile north of Stobswell, in Dundee. Whether you’re in the middle of Mill of Mains or further out, sand mastic is available for homes and businesses alike. We cover 50 towns and villages across Dundee.
Postcode districts we cover here for sand mastic: DD4 and DD3. You will find streets such as Forfar Road, Fintry Road and Honeygreen Road. Close by, we work in Claverhouse (1 mile north-west), Woodside (1 mile south-west), Pitkerro (1 mile south-east), Whitfield (1 mile east) and Stobswell (1 mile south). We also work in nearby towns such as Broughty Ferry (3 miles east), Monifieth (5 miles east), Blackness (3 miles south-west), Barnhill (4 miles east), Logie (3 miles south-west) and Dryburgh (3 miles west).
Around Mill of Mains
We work in homes and buildings around Baxter Park, St Roque's Library and Baldragon Academy. The nearest railway station is Dundee station, roughly 2.3 miles south of the centre. A little further out are Wellgate Centre (1.8 miles south) and McManus Gallery (1.9 miles south). The countryside around Mill of Mains includes Trottick Mill Ponds and Balgay Hill.
Why it’s worth doing now in Mill of Mains
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. Private landlords in Mill of Mains must meet the Repairing Standard, and damp or leaks can fall short of it, so it’s worth fixing failed sealant before a tenant reports it.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What you get with us
- Domestic, commercial and hotel work
- Any old sealant cut out fully, not covered over
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at what affects the cost or what customers say.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Look over the window mastic once a year
- Ask the planning authority about consent for listed or conservation-area homes
- Get any rot dealt with first
- Go gently near the mastic when preparing windows
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Honest limits
Before you book, it’s worth knowing the limits:
- Cracked or broken glass
- Damaged stone surrounds
- Decisions on consent for listed homes
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly before you book.
Where we work in Mill of Mains
- Sash and case windows
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds