Scottish Borders · Scotland
Sand mastic for sash & case windows in Wilton Dean, Scottish Borders
Problem with your window and door surrounds in Wilton Dean? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
- Tired mastic found when preparing windows for paint
Sand mastic in Wilton Dean
We work across Wilton Dean renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you are dealing with patchy fillers round a sash window and mastic round period door frames that has failed, we can put it right, whatever the surface.
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.
All our work comes with a one-year guarantee, wherever you are in the Scottish Borders.
- Where
- Wilton Dean (TD9)
- Wider area
- Scottish Borders
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Quotes for sand mastic in Wilton Dean
There’s no set price list. The quote depends on:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- How easy the joints are to reach
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
To help us quote quickly, let us know:
- Pictures of the joints, sent by email
- If someone has resealed it before
- The problem you’ve noticed
- The rough size of the job
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Also in Wilton Dean
Wilton Dean: your questions answered
Will you come out to Wilton Dean?
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.
Is Wilton Dean in your area for sand mastic?
Yes, Wilton Dean is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear quote.
I’m a tenant. Can you help?
We are happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Do you guarantee sand mastic work?
Our one-year guarantee covers every job, sand mastic included.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
Is sand mastic better than silicone for my windows?
It depends on the window. Period windows in stone or brick normally suit sand mastic and newer frames generally get a flexible sealant.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Wilton Dean.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Surface by surface
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is generally favoured.
Landlord and commercial work in Wilton Dean
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.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured.
How it works
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. Somewhere like Wilton Dean may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
- Clear the area around the work
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, email us at info@mrmastic.co.uk.
Advice
Why act early in Wilton Dean
Not every filler suits an old window surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why Wilton Dean clients choose us
- Trusted Arbo and Everbuild sealants
- Sanitary silicone with an anti-fungal additive in wet areas
- Domestic, commercial and hotel work
- We are fully insured
See how sealant jobs are priced and our reviews.
Sand mastic in Wilton Dean: local notes
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
Schools such as Hawick High School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Wilton Dean is about 1 mile west of Hawick, in the Scottish Borders. Jobs in Wilton Dean get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Wilton Dean is one of 89 places in the Scottish Borders we cover. There’s also a page for Edinburgh, about 39 miles away.
Postcode districts we cover here for sand mastic: TD9. That includes homes and businesses on Dean Road, Overhall Road and Buccleuch Road and the roads around them. If you’re just outside Wilton Dean, we cover Wilton (1 mile east), Hawick (1 mile east), Stirches (1 mile north-east), Burnfoot (2 miles north-east) and Newmill (4 miles south-west). Larger places within reach include Galashiels (13 miles north), Selkirk (9 miles north), Jedburgh (11 miles east), Melrose (12 miles north), Langlee (13 miles north) and St Boswells (12 miles north-east).
Landmarks near Wilton Dean
We work in homes and buildings around The Bourtree pub and the streets around them. Other landmarks nearby include Borders Textile Towerhouse (0.7 miles east) and Branxholme Castle (2.5 miles south-west). The countryside around Wilton Dean includes Williestruther Loch and Ashkirk Hill.
Signs you need sand mastic in Wilton Dean
Water gets into small cracks in the mastic and loosens it further. Exposed elevations normally fail first.
People normally contact us after spotting one of these:
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
- Cracked mastic round a front door frame
- Draughty sash windows at the surround
Homes close to Old Parish Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- What happens if the job turns out different
- Which colour the sealant will be
- Whether all the old sealant comes out first
- Are they insured?
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.