Dumfries and Galloway · Scotland
Sand Mastic in Canonbie
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Canonbie, with a one-year guarantee on every job. Ask us for a quote.
- Failed mastic on an exposed elevation
- Gaps between timber frames and stone or brick
- Patchy fillers round a sash window
How we handle sand mastic in Canonbie
We work across Canonbie renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We work on tenement windows, period & listed homes and stone surrounds, and people most often call us about modern sealant on a period surround and weathered mastic on the most exposed windows.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
Your job is guaranteed for a year, as with all our work.
- Where
- Canonbie (DG14)
- Region
- Dumfries and Galloway
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Signs you need sand mastic in Canonbie
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Common reasons people contact us are:
- Crumbling sand mastic round a window
- Gaps where the frame meets the masonry
- Modern sealant on a period surround
- Tired mastic found when preparing windows for paint
Homes close to Canonbie Parish Church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
What to look for in a quote
- What guarantee comes with the work
- What product goes in the joint
- What happens if they find a problem under the old sealant
- Whether they’re fully insured
Common questions in Canonbie
Will you come out to Canonbie?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is there a guarantee on sand mastic in Canonbie?
All our work, in Canonbie and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Can you replace silicone on a period window with sand mastic?
Generally, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that usually means someone at home.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Also near Canonbie
What else we do in Canonbie
What happens on the day
At the end, we look at the finished work together and explain the cure time. The visit itself normally takes a few hours for a single window, longer for several, depending on the size of the job. Outdoor work around Canonbie depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Work indoors isn’t affected.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
- Mention if the joints have been sealed before
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you are ready, send an email to info@mrmastic.co.uk.
Read more
Looking after it afterwards
After the cure time, these simple habits help:
- Keep sills and gutters clear so water drains away
- Plan mastic work ahead of painting
- Check with your local planning authority if your home is listed
- Go gently near the mastic when preparing windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
What affects the cost of sand mastic
The quote reflects the job in front of us. We take into account:
- The number of rooms or windows
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- The type of property
- How many joints, rooms or windows are involved
- A few photos by email, if you can
- Whether it has been sealed before
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
What the job involves on each surface
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Crumbling stone or brickwork round the window
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think.
Joints and surfaces we work on
- Timber door frames
- Tenement windows
- Brick reveals
- Period & listed homes
- Sash and case windows
- Stone surrounds
Canonbie homes and the weather
Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Around Canonbie, as everywhere, sand mastic is only as good as the preparation behind it.
Canonbie is in Dumfries and Galloway. Canonbie gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our Dumfries and Galloway coverage runs to 138 places, Canonbie among them. Edinburgh is on our list too, around 61 miles away.
Our applicators cover all of the DG14 postcode area for sand mastic. We cover properties on Prior Avenue, Aldery Terrace and Forgeholm and the roads around them. We also cover the places around Canonbie: Langholm (5 miles north), Springfield (7 miles south-west) and Gretna Green (7 miles south-west). Larger places within reach include Annan (13 miles south-west), Gretna (7 miles south-west), Eastriggs (11 miles south-west) and Ecclefechan (12 miles west).
What’s near Canonbie
Well-known places in the area include Auchenrivock Tower (2.8 miles north-west) and Thomas Hope Hospital (5.3 miles north). Not far away are Bloch Hill.