Dumfries and Galloway · Scotland
Dunscore Sand Mastic
Problem with your window and door surrounds in Dunscore? We remove the old material, prepare the joints and seal them properly.
- Draughts and rain around sash boxes
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
About our sand mastic in Dunscore
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. Typical jobs include silicone on a period window that looks wrong and gaps where the frame meets the masonry, on stone surrounds, brick reveals and timber door frames.
Mastic can only go onto a dry joint, so outside work in Dunscore depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
You get a one-year guarantee, the same in Dunscore as everywhere else we work.
- Location
- Dunscore (DG2)
- Region
- Dumfries and Galloway
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Signs you need sand mastic in Dunscore
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Most people get in touch after spotting one of these:
- Draughty sash windows at the surround
- Patchy fillers round a sash window
- Mastic that needs renewing before redecorating
- Silicone on a period window that looks wrong
Around Dunscore, as everywhere, sand mastic is only as good as the preparation behind it.
What your quote should include
- What the cure time is
- How the surfaces are prepared before sealing
- Are they insured?
- How hidden problems are handled
What we do, step by step
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes a few hours per window, depending on the condition of the joints. Outside jobs in Dunscore need a dry day, because sealant won’t bond to a wet joint, so an outdoor job can move if the forecast changes. Work indoors isn’t affected.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- 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.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
Getting a quote
We quote each job on its own, so start by telling us what you need. Just send an email to info@mrmastic.co.uk with the details.
Read more
Dunscore homes and the weather
Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
Homes close to Dunscore Parish Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Dunscore is about 9 miles north-west of Dumfries, in Dumfries and Galloway. Wherever you are in the DG2 postcode area, we can carry out sand mastic at your property. Dunscore is one of 138 places in Dumfries and Galloway where we work for sand mastic. There’s also a page for Glasgow, roughly 53 miles from Dunscore.
Postcode districts we cover here for sand mastic: DG2. If you need sand mastic at a property on Crawston Place, Dalgonar Road and Church Crescent or anywhere close by, we can help. Other places close to Dunscore include Wallaceton (2 miles north-west), Auldgirth (3 miles north-east), Dalswinton (4 miles east), Closeburn (5 miles north) and Keir Mill (5 miles north). We also work in nearby towns such as Dumfries (9 miles south-east), Dalbeattie (15 miles south), Castle Douglas (15 miles south-west), Heathhall (9 miles east), Newbridge Drive (7 miles south-east) and Lochmaben (13 miles east).
What’s near Dunscore
Well-known places in the area include Barjarg Tower (3.5 miles north). Green spaces nearby include Carse Loch and Bishop Forest Hill.
Common questions in Dunscore
Is Dunscore within the area you cover?
Yes, we do. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Dunscore for sand mastic?
Yes. We work across all of Scotland, and Dunscore is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we will send you a clear quote.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Is sand mastic better than silicone for my windows?
That depends on your windows. Period windows in stone or brick normally suit sand mastic, while modern frames normally get a flexible sealant.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will advise.
Can I choose the sealant colour?
Yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before work begins.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, 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 the joint depth matters as much as the finish.
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- Whether the work is at height
- Working hours on commercial sites
- How much there is to do
- Whether there’s mould to deal with
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. We give a clear quote before we start, so you know where you stand.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Roughly how big the job is
- If someone has resealed it before
- A few photos by email, if you can
- The problem you’ve noticed
For sand mastic in Dunscore, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before we start.
Landlord and commercial work in Dunscore
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Leave the new mastic unpainted
- Ask a joiner to look at soft timber first
- Clear gutters so water doesn’t pour onto the windows
- Look over the window mastic once a year
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
When it isn’t the sealant
In fairness, there are a few things sealant won’t fix:
- Damaged stone surrounds
- Rotten sashes, sills or window boxes (a joiner’s job)
- Whether work needs listed building consent
If in doubt, email us at info@mrmastic.co.uk and we will say what we think.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Stone surrounds
- Timber door frames
- Sash and case windows
- Period & listed homes