Dundee · Scotland
Sand Mastic in Strathmartine
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Strathmartine, backed by a one-year guarantee. Ask us for a quote.
- Old cement repairs round a window that have failed
- Mastic that needs renewing before redecorating
- Gaps where the frame meets the masonry
Sand mastic for homes and businesses in Strathmartine
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We are often asked to deal with gaps round a timber door in stone or brick and old sand mastic that has cracked, crumbled or fallen out, across stone surrounds, period & listed homes and tenement windows.
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.
There’s a 12-month guarantee on every job, large or small.
- Place
- Strathmartine (DD3)
- Region
- Dundee
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How it works
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a single window, longer for several in most cases. Outside jobs in Strathmartine need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
Get a quote
For sand mastic in Strathmartine, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Read more
Also near Strathmartine
Also in Strathmartine
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Don’t run silicone over sand mastic
- Have rotten timber repaired before new mastic goes in
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Strathmartine: your questions answered
I let a flat near Dundee station. Can you help?
Yes, rental work is part of what we do. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we’ll send you a clear quote.
Do you cover Strathmartine for sand mastic?
Yes. Our work covers the whole of Scotland, and Strathmartine is part of that. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Can you seal over the old sealant?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Are you fully insured?
Yes, we are fully insured for every job we do.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
What guarantee comes with the work?
Our 12-month guarantee applies to all our work.
Which is right for my windows, sand mastic or modern sealant?
We will talk it through with you. Period homes often look best with sand mastic, and modern sealants suit newer frames.
Landlords, agents and businesses in Strathmartine
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
When it is not the sealant
New sealant can’t fix everything, and we will tell you before any work starts. Sealant will not put right:
- Broken panes
- Crumbling stone or brickwork round the window
- Decisions on consent for listed homes
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Tenement windows
- Period & listed homes
- Timber door frames
Why act early in Strathmartine
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Combining jobs into one visit is generally more efficient than separate visits. You will get one clear quote for the whole job.
Why Strathmartine customers choose us
- Anti-fungal sanitary silicone in wet areas
- More than 20 years in sealant work
- Fully insured
- We never seal over old sealant
Read what affects the cost and customer reviews.
Strathmartine homes and the weather
With historic houses such as Camperdown House (about 2.1 miles south-west) nearby, there’s older building stock in the area around Strathmartine as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Historic houses such as Camperdown House, about 2.1 miles south-west, show how far back building around Strathmartine goes. Schools such as Baldragon Academy are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Strathmartine is about 2 miles north of Dundee, in Dundee. Every kind of property in Strathmartine can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 50 places across Dundee.
Postcode districts we cover here for sand mastic: DD3. Streets in the area include Newry Green, Tom Hunter Gardens and Craigmill Road, all of which we cover. We also cover Balgowan (1 mile south), Bridgefoot (1 mile west), St Marys (1 mile south-west), Downfield (1 mile south) and Ardler (1 mile south-west). Larger places within reach include Broughty Ferry (5 miles east), Stobswell (3 miles south-east), Monifieth (7 miles east), Blackness (3 miles south), Barnhill (6 miles east) and Logie (3 miles south).
What’s near Strathmartine
The closest station to Strathmartine is Dundee station, roughly 3.5 miles south of the centre. Other landmarks nearby include Tayside Medical History Museum (3 miles south) and King's Cross Hospital (2 miles south). For a walk, there’s Trottick Mill Ponds and Balgay Hill.
Surface by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. We rake it out and renew it.
What we’re called out for in Strathmartine
Water gets into small cracks in the mastic and loosens it further. Exposed elevations normally fail first.
Keep an eye out for these signs:
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
For landlords with property near Dundee station, any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- Which sealant they’ll use, and why
- Whether they’re fully insured
- What the cure time is
- What happens if the job turns out different