Scottish Borders · Scotland
Sand mastic for sash & case windows in Greycrook, Scottish Borders
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Greycrook and across the Scottish Borders. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked mastic round a front door frame
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
Sand mastic for homes and businesses in Greycrook
Sand mastic suits most period window surrounds. Newer frames normally get a flexible sealant instead, and we’ll talk through which suits your home. We work on stone surrounds, brick reveals and timber door frames, and common reasons people get in touch are patchy fillers round a sash window and tired mastic found when preparing windows for paint.
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.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Greycrook (TD6)
- Region
- Scottish Borders
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
The process
On the day, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. Most jobs take a few hours per window, depending on the condition of the joints. Outdoor work around Greycrook depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Work indoors is not affected.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
- On commercial sites, let us know about site rules
Getting a quote
For 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 give you a clear price before any work starts.
Read more
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Keep modern sealant off the mastic
- Make sure water runs off the sill
- Sort the mastic before the decorators arrive
- Don’t paint over the new mastic
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
Greycrook: your questions answered
Do you cover smaller places like Greycrook?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
What guarantee comes with sand mastic in Greycrook?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Can you do several jobs on one visit?
Yes. More than one area can be quoted together.
Which is right for my windows, sand mastic or modern sealant?
It depends on the window. On many period windows, sand mastic looks right and suits the building and newer frames normally get a flexible sealant.
Do you work for landlords and businesses?
Yes, we do. We work in homes, commercial premises and hotels.
How long does the job take?
That depends on the amount of work, but most jobs take a few hours for a single window, longer for several. We’ll give you a better idea when we quote.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Can I choose the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
Greycrook homes and the weather
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. 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.
In and around Greycrook, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Greycrook is about 7 miles south-east of Galashiels, in the Scottish Borders. Whether you’re in the middle of Greycrook or further out, sand mastic is available for homes and businesses alike. Our area takes in 89 places across the Scottish Borders, from the larger towns to small villages. Our Edinburgh page covers work nearby (34 miles or so).
Postcode districts we cover here for sand mastic: TD6. Local streets include Kirk Road, Weirgate Avenue and Polwarth Avenue. Greycrook sits on or near the A699. If you are just outside Greycrook, we cover St Boswells (1 mile north-west), Maxton (1 mile east), Newtown St Boswells (2 miles north-west), Bowden (3 miles west) and Newstead (3 miles north-west). Within a short drive, we also cover Galashiels (7 miles north-west), Hawick (11 miles south-west), Kelso (8 miles east), Selkirk (8 miles west), Jedburgh (7 miles south-east) and Wilton (11 miles south-west).
Local landmarks in Greycrook
Well-known places in the area include Castle Holydean (3.8 miles west) and Dingleton Hospital (4 miles north-west). Not far away are Bemersyde Moss and Eildon Hill North.
Landlord and commercial work in Greycrook
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Quotes for sand mastic in Greycrook
Every job gets its own quote. This is what makes a difference:
- The old material and how stubborn it is
- The type of sealant required
- Any working-time requirements on site
- How easy the joints are to reach
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before work begins, so you know where you stand.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- The address or postcode of the job
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
How the job changes by surface
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
Towns and villages near Greycrook
More services for Greycrook
Signs you need sand mastic in Greycrook
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
It’s worth asking for a quote if you see:
- Failed mastic on an exposed elevation
- Mastic round period door frames that has failed
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
Homes close to St Boswells Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before you book
- How the joint is cleaned and prepared
- When the joint can take water or movement
- Which colour the sealant will be
- Whether VAT is included