Dundee · Scotland
St Marys Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in St Marys. Fully insured, ARBOMaster approved and guaranteed for a year.
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
- Old sand mastic that has cracked, crumbled or fallen out
Why it’s worth doing now in St Marys
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. For landlords in St Marys, damp and leaks can be a Repairing Standard issue, so failed sealant is best replaced before it becomes a complaint.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start.
Why choose Mr Mastic in St Marys
- 4.9 on Google from 180+ five-star reviews
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- More than 20 years in sealant work
Take a look at how sealant jobs are priced and customer reviews.
Sand mastic in St Marys, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. We’re often asked to deal with weathered mastic on the most exposed windows and draughts and rain around sash boxes, across sash and case windows, timber door frames and stone surrounds.
Tenement flats in Scotland’s cities often have windows high above the street, so the mastic outside can go unchecked for years. For a flat in St Marys, access is the first thing to plan, and in a tenement the outside of the building may be a shared repair.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- St Marys (DD3, DD2)
- Wider area
- Dundee
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Surface by surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. Sand mastic is shaped by hand to suit.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
If you manage several properties in or around St Marys, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
Your questions about sand mastic in St Marys
I let a flat near Invergowrie station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Is sand mastic in a coastal place like St Marys 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.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
What guarantee comes with the work?
Every job comes with our 12-month guarantee, and we are fully insured.
Should I check with the council before work on a listed or conservation-area home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
How much does sand mastic cost in St Marys?
Every job is different, so each one gets its own quote. To get one, email us at info@mrmastic.co.uk with a short description of the job.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Places near St Marys
Also in St Marys
What sand mastic looks like in St Marys
St Marys 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. 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.
Rented homes near Invergowrie station change hands often, and any sash windows need sound mastic to keep draughts and rain out. Camperdown House, about 1.2 miles south-west, is one of the historic houses in the wider area around St Marys, and older homes nearby need a sealant that suits their walls. Schools such as Lawside Academy are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
St Marys is about 2 miles north-west of Dundee, in Dundee. Whether you’re in the middle of St Marys or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. St Marys is one of 50 towns and villages in Dundee where we work.
Jobs for sand mastic in DD3 and DD2 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on Troon Road, Troon Avenue and Gullane Road or a nearby road, we can help. If you’re just outside St Marys, we cover Ardler (1 mile south), Dryburgh (1 mile south), Camperdown (1 mile south-west), Lochee (1 mile south) and Birkhill (2 miles west). Further out, we also cover Broughty Ferry (6 miles east), Stobswell (3 miles south-east), Monifieth (7 miles east), Barnhill (6 miles east), Pitkerro (3 miles east) and Whitfield (3 miles east). Being one of Dundee’s larger places, St Marys has homes, rented property and businesses of every kind.
Local landmarks in St Marys
In St Marys, that means homes and buildings near Cox Branch Library and Balgay Hill. The closest station to St Marys is Invergowrie station, roughly 3 miles south-west. Well-known places in the area include Wellgate Centre (2.6 miles south-east) and Strathmartine Castle (1.5 miles north). For a walk, there’s Balgay Hill and Trottick Mill Ponds.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a single window, longer for several and we leave things clean and tidy. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. For a job in St Marys, tell us the floor, how the door entry system works and where we can park nearby.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Clear items away from the joints we are working on
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few pictures by email make the job easier to understand.
Related advice
What affects the quote in St Marys
There’s no set price list. What we look at:
- How many rooms, windows or areas are involved
- The size of the job
- When we can work, for business premises
- The product the joint needs
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Asking for a quote
When you call or email, these details help:
- Pictures of the joints, sent by email
- The rough size of the job
- Where the property is
- If someone has resealed it before
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Honest limits
It helps to know what we cannot do too:
- Timber that has rotted
- Whether work needs listed building consent
- Broken panes
If you’re not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Timber door frames
- Tenement windows
- Stone surrounds
- Sash and case windows
- Brick reveals
- Period & listed homes