Dumfries and Galloway · Scotland
Sand mastic for sash & case windows in Shawhead, Dumfries and Galloway
We cover Shawhead for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Cracked mastic round a front door frame
- Mastic dropping out of the joint
- Gaps between timber frames and stone or brick
Common questions in Shawhead
What guarantee comes with sand mastic in Shawhead?
Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Do you cover smaller places like Shawhead?
Yes, Shawhead is covered. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Where are you based?
Mr Mastic is based in Crawley. We cover Shawhead and the rest of Dumfries and Galloway, along with the rest of our area.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Can landlords and businesses book you?
Yes. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Sand mastic in Shawhead, done properly
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. We are often asked to deal with old sand mastic that has cracked, crumbled or fallen out and draughts and rain around sash boxes, across timber door frames, brick reveals and tenement windows.
Mastic can only go onto a dry joint, so outside work in Shawhead depends on the weather. Let us know about access to every frame, including any upstairs.
Your job is guaranteed for a year, as with all our work.
- Place
- Shawhead (DG2)
- Wider area
- Dumfries and Galloway
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Common problems we fix in Shawhead
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber, and they normally need raking out.
It’s worth asking for a quote if you see:
- Cracked mastic round a front door frame
- Silicone on a period window that looks wrong
- Mastic dropping out of the joint
- Mastic that needs renewing before redecorating
Whether the job is in Shawhead itself or nearby, the right material for each joint matters as much as a neat finish.
Questions to ask before you book
- How much experience the applicator has
- What the cure time is
- What happens if they find a problem under the old sealant
- The length of the guarantee
Leave it or put it right?
Draughts round a sash window aren’t always the sashes. Gaps between the frame and the wall can be just as bad, and renewing the mastic closes them. Around Shawhead, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What you get with us
- Over 20 years’ experience
- A 12-month guarantee on all work
- Homes, businesses and hotels
- We leave the area clean and tidy
Read what affects the cost and what customers say.
What else we do in Shawhead
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cracked or broken glass
- Timber that has rotted
- Damaged stone surrounds
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think before booking.
Surfaces we seal
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Brick reveals
- Timber door frames
- Tenement windows
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Windows and doors in Shawhead
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. 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.
Around Shawhead, as everywhere, sand mastic is only as good as the preparation behind it.
Shawhead is about 6 miles west of Dumfries, in Dumfries and Galloway. Homes, rented property, offices and hotels in Shawhead can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our Dumfries and Galloway coverage runs to 138 places, Shawhead among them. You can also see our page for Glasgow, about 58 miles away.
Our applicators cover all of the DG2 postcode area for sand mastic. Neighbouring places we cover for sand mastic include Lochfoot (2 miles south-east), Crocketford (3 miles south-west), Milton (4 miles south), Terregles (4 miles east) and Beeswing (4 miles south-east). Larger places within reach include Dumfries (6 miles east), Dalbeattie (9 miles south), Castle Douglas (11 miles south-west), Heathhall (8 miles east), Newbridge Drive (6 miles east) and Lochmaben (14 miles east).
What’s near Shawhead
The countryside around Shawhead includes Lochrutton Loch and Bishop Forest Hill.
Different surfaces, different methods
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
What we do, step by step
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Outdoor work around Shawhead depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
How to prepare
- On commercial sites, let us know about site rules
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk with a few details. We’ll explain what we’d do and send you a clear quote before work begins.
Related advice
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
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.