Scottish Borders · Scotland
Copshaw Holm Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Copshaw Holm, with a one-year guarantee on every job. Ask us for a quote.
- Crumbling sand mastic round a window
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
Sand mastic in Copshaw Holm, done properly
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it, so ask us before you decorate. We work on sash and case windows, tenement windows and period & listed homes, and people most often call us about patchy fillers round a sash window and gaps where the frame meets the masonry.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Wind-driven rain finds any gap around a frame or sill, so the mastic there works hard.
The work is covered for a year after we finish. If anything isn’t right with it, drop us a line at info@mrmastic.co.uk.
- Location
- Copshaw Holm (TD9)
- Region
- Scottish Borders
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What we’re called out for in Copshaw Holm
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
The problems people normally mention when they call include:
- Draughts and rain around sash boxes
- Modern sealant on a period surround
- Crumbling sand mastic round a window
- Mastic round period door frames that has failed
In and around Copshaw Holm, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- Whether the sealant suits the joint
- Is VAT in the price?
- How much experience the applicator has
- What the cure time is
Nearby places to Copshaw Holm
What else we do in Copshaw Holm
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Go gently near the mastic when preparing windows
- Make sure water runs off the sill
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
What affects the quote in Copshaw Holm
Jobs vary more than people expect. The main factors:
- Working hours on commercial sites
- The size of the job
- Which sealant suits the joint
- How many areas need sealing
The cost depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before we start.
What to tell us for a quote
To help us quote quickly, let us know:
- A few photos by email, if you can
- Where the job is, and your postcode
- Roughly how big the job is
- The type of property
Want a quote for sand mastic? Please email us at info@mrmastic.co.uk and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.
How it works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. Somewhere like Copshaw Holm may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
- Mention any tricky access
How to get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
Related advice
FAQs for Copshaw Holm
Is Copshaw Holm within the area you cover?
Yes. Copshaw Holm is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
What guarantee comes with sand mastic in Copshaw Holm?
All our work, in Copshaw Holm and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic beds in well.
How long does sand mastic take to go off?
Not right away. It skins first and hardens fully later, and we’ll tell you what to expect.
How long will you be here?
Typically it takes anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What information do you need?
Let us know what needs doing and where. If we need more, we will ask.
Why deal with it now?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. In an older home around Copshaw Holm, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please send an email to info@mrmastic.co.uk and we’ll talk you through it.
Why book with us
- We leave the area clean and tidy
- Quality sealants from Arbo and Everbuild
- Approved under the ARBOMaster scheme
- 4.9 on Google from 180+ five-star reviews
Take a look at what affects the cost or what customers say.
Copshaw Holm 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.
For jobs in and around Copshaw Holm, choosing the right material for each joint is as important as a tidy finish.
Copshaw Holm (Gaelic: Newcastleton) is about 17 miles south of Hawick, in the Scottish Borders. For sand mastic in and around Copshaw Holm, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We cover the Scottish Borders from our Crawley base, Copshaw Holm included. Copshaw Holm is one of 89 towns and villages in the Scottish Borders where we work for sand mastic. For nearby work, see our Edinburgh page, about 55 miles away.
Work in TD9 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Whitchester Street, Doncaster Street and Whitchester Lane. Nearby, we also carry out sand mastic in Langholm (8 miles west), Canonbie (9 miles south-west), Springfield (16 miles south-west) and Gretna Green (16 miles south-west).
Near you in Copshaw Holm
The countryside around Copshaw Holm includes Scotch Knowe.
Landlord and commercial work in Copshaw Holm
Housing providers, facilities teams and property managers book us too in Copshaw Holm and across the Scottish Borders. Several sites can go on one quote, and we are fully insured for the work.
For anyone letting property in or around Copshaw Holm, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
When something else is needed
We will not take on work that will not last, so these are the limits:
- Decisions on consent for listed homes
- Sash cords, weights and draught-proofing of the sashes
- Masonry that needs repairing
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think.
What we seal
- Period & listed homes
- Stone surrounds
- Tenement windows
- Timber door frames
- Sash and case windows
- Brick reveals