Scottish Borders · Scotland
Sand mastic for sash & case windows in Bonchester Bridge, Scottish Borders
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Bonchester Bridge. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- Mastic worn away on windows facing the weather
Sand mastic in Bonchester Bridge
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. If you are dealing with gaps round a timber door in stone or brick and gaps between timber frames and stone or brick, we can put it right, on timber door frames, brick reveals and tenement windows alike.
Many older Scottish homes still have timber windows set into stone walls. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
We stand behind the work with a one-year guarantee, so you are covered after we have gone.
- Place
- Bonchester Bridge (TD9)
- Region
- Scottish Borders
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Your questions about sand mastic in Bonchester Bridge
Is there a guarantee on sand mastic in Bonchester Bridge?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Do you cover smaller places like Bonchester Bridge?
Yes. Bonchester Bridge is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
How do I get a quote for sand mastic in Bonchester Bridge?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Which is right for my windows, sand mastic or modern sealant?
Sand mastic normally suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Can you do several jobs on one visit?
Yes. More than one area can be quoted together.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
What else we do in Bonchester Bridge
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Make sure water runs off the sill
- Avoid heavy scraping on the mastic joint
- Get any rot dealt with first
- Find out about consent before window work on a listed home
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
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.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
What we can’t put right
Before booking, it’s worth knowing the limits:
- Cracked or broken glass
- Damaged stone surrounds
- Rotten sashes, sills or window boxes (a joiner’s job)
If you’re not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer before you book.
What we seal
- Timber door frames
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
What the job involves on each surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
We also work for property managers and facilities teams. Several sites can go on one quote.
What sand mastic looks like in Bonchester Bridge
Many older homes in Scotland have sash and case windows, 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 failed outside joints work against that.
In the older streets around Hobkirk, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Bonchester Bridge is about 6 miles east of Hawick, in the Scottish Borders. For sand mastic in and around Bonchester Bridge, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover the Scottish Borders from our Crawley base, Bonchester Bridge included. Our the Scottish Borders coverage runs to 89 places, and Bonchester Bridge is one of them. Our Edinburgh page covers work nearby.
Postcode districts we cover here for sand mastic: TD9. Local streets include Forest Road and Wauchope Road. If you’re just outside Bonchester Bridge, we cover Denholm (4 miles north), Burnfoot (5 miles north-west), Hawick (6 miles west), Wilton (6 miles west) and Stirches (6 miles north-west). Further out, we also cover Selkirk (13 miles north-west), Jedburgh (7 miles north-east), Melrose (14 miles north), St Boswells (12 miles north), Tweedbank (15 miles north) and Newtown St Boswells (13 miles north).
Near you in Bonchester Bridge
Other landmarks nearby include Hawick Community Hospital (5.8 miles west) and Fulton Tower (2.8 miles north-east). For a walk, there’s Bonchester Hill.
When to call us in Bonchester Bridge
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber and we normally remove them.
If you can see any of these, it’s time to have the joints looked at:
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
In and around Bonchester Bridge, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- Which colour the sealant will be
- Is the old sealant removed completely?
- Whether the sealant suits the joint
- Are they insured?
How the visit works
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and clear up. Most jobs take a few hours for a single window, longer for several. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- 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.
Getting ready for the visit
- Tell us if parking is tricky
- Clear the area around the work
- Let us know about stairs, lifts or work at height
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, send an email to info@mrmastic.co.uk.