Scottish Borders · Scotland
Sand Mastic in Grantshouse
We cover Grantshouse 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 and a 12-month guarantee.
- Mastic dropping out of the joint
- Silicone on a period window that looks wrong
- Patchy fillers round a sash window
How we handle sand mastic in Grantshouse
Sand mastic doesn’t last for ever, leaving gaps round the window. Renewing it closes the gap so the surround looks right again. We work on timber door frames, tenement windows and stone surrounds, and the jobs we see most are mastic dropping out of the joint and draughts and rain around sash boxes.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Exposed frames and sills take the full force of wind-driven rain.
Every job is covered by our one-year guarantee.
- Where
- Grantshouse (TD11)
- Wider area
- Scottish Borders
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What happens if it’s left?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why us?
- Full insurance on every job
- Arbo and Everbuild products
- Homes, businesses and hotels
- 12-month guarantee on every job
Read what affects the cost or what customers say.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Ask the planning authority about consent for listed or conservation-area homes
- Keep sills and gutters clear so water drains away
- Go gently near the mastic when preparing windows
- Have rotten timber repaired before new mastic goes in
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Grantshouse: your questions answered
Do you work for landlords with property near Reston station?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. Just send an email to info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear quote.
Is Grantshouse within the area you cover?
Yes, Grantshouse is covered. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
What does sand mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
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.
What we cannot put right
It helps to know what we cannot do too:
- Crumbling stone or brickwork round the window
- Decayed frames that need repair
- Whether work needs listed building consent
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Sash and case windows
- Tenement windows
- Timber door frames
- Stone surrounds
- Brick reveals
- Period & listed homes
What the job involves on each surface
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Places near Grantshouse
Also in Grantshouse
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and tidy away. Most jobs take a few hours for a single window, longer for several. In smaller Scottish places, parking is usually less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- 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.
Getting ready for the visit
- Clear items away from the joints we are working on
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any leaks or damp you’ve noticed
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Just drop us a line at info@mrmastic.co.uk with the details and send photos if you have them.
Related advice
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Grantshouse 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. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
For an older house near a landmark such as Grantshouse Church (Church Of Scotland), the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Reston station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Grantshouse is in the Scottish Borders. Our applicators cover sand mastic for homes and businesses in Grantshouse. We cover 89 towns and villages across the Scottish Borders, large and small. Edinburgh is on our list too, around 36 miles away.
Every address in TD11 is covered for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Howpark Road and Mansefield or anywhere close by, we can help. We also cover Cove (4 miles north-west), Cockburnspath (4 miles north-west), Reston (4 miles south-east), Scottish Borders (5 miles east) and Coldingham (5 miles east). We also work in nearby towns such as Eyemouth (8 miles east), Duns (8 miles south) and Chirnside (7 miles south-east).
Landmarks near Grantshouse
The closest station to Grantshouse is Reston station, roughly 4.6 miles south-east. A little further out are Press Castle (3.3 miles east). Green spaces nearby include Shannabank Hill and Pease Dean.