Scottish Borders · Scotland
Stow Window Mastic
Window and door frames in Stow need attention? We remove the old material, prepare the joints and seal them properly.
- Mastic that’s falling out in pieces
- Rushed sealant from a window installation
- Leaking joints at the ends of sills
Quotes for window mastic in Stow
Jobs vary more than people expect. What affects the quote:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- Whether the work is at height
- The type of sealant required
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
Photos help, but a description is a good start. Please mention:
- Roughly how big the job is
- Any previous sealing or DIY work
- The type of property
- The problem you’ve noticed
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, drop us a line at info@mrmastic.co.uk.
About our window mastic in Stow
The new joint does not have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. We work on window sills, composite doors and timber windows & doors, and people most often call us about whistling draughts around closed windows and draughty joints inside around the window.
Outdoor sealant needs a dry surface, so window work around Stow is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
All of our work is guaranteed for twelve months, in Stow and everywhere else we cover.
- Where
- Stow (TD1)
- Region
- Scottish Borders
- Cover
- One year on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Windows and doors in Stow
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.
In the older streets around St Mary's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you let a flat or house near Stow station, renewing tired window mastic between tenants heads off draught and damp complaints.
Stow is about 6 miles north of Galashiels, in the Scottish Borders. For window mastic in and around Stow, it’s easy to get a quote: please send an email to info@mrmastic.co.uk. We cover the Scottish Borders from our Crawley base. 89 places in the Scottish Borders are on our list, from the larger towns to small villages. For nearby work, see our Edinburgh page, about 22 miles away.
Postcode districts we cover here for window mastic: TD1. We cover properties on Station Road, Townfoot and Galashiels Road. We also cover the places around Stow: Killochyett (1 mile north-west), Fountainhall (3 miles north-west), Lauder (5 miles north-east), Clovenfords (5 miles south) and Nether Blainslie (5 miles east). Further out, we also cover Peebles (13 miles west), Selkirk (10 miles south), Innerleithen (9 miles south-west), Melrose (8 miles south-east), Earlston (8 miles south-east) and Langlee (6 miles south-east).
Landmarks near Stow
There’s a railway station in Stow itself: Stow station.
Towns and villages near Stow
Also in Stow
What the job involves on each surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the threshold joint takes a lot of water. Each is cleaned, backed where deep and resealed.
Composite doors
An exposed front door gets wind-driven rain. Those corners get the most care.
Leave it or put it right?
Getting a straight, even bead on an outside frame takes practice, especially upstairs. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
Why choose Mr Mastic in Stow
- Tidy, careful work
- Colour agreed with you before we start
- Quality sealants from Arbo and Everbuild
- A choice of colours where the product allows
Take a look at what affects the cost and our reviews.
Work for landlords, hotels and businesses
For anyone letting property in or around Stow, several properties can go on one quote. Send us the addresses and the work at each.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from an hour or two to a full day, depending on how many frames there are and we leave things clean and tidy. Around Stow, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
Before we arrive
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you are ready, send an email to info@mrmastic.co.uk.
Advice
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.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Questions from Stow
Do you cover Stow for window mastic?
Yes. Our work covers the whole of Scotland, and Stow is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job.
I let a flat near Stow station. Can you help?
Yes, rental work is part of what we do. Just email us at info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear price.
Can you seal the gap between the frame and the plaster indoors?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
What information do you need?
A short description and the location. If we need more, we will ask.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Will new mastic stop draughts?
It will if the frame joint is the problem. We check where the draught is before work begins.
When is the sealant fully cured?
It depends on the product. We tell you how long to leave it before we go.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Honest limits
To be straight with you, there are a few things sealant will not fix:
- Condensation trapped between the panes
- Rotten timber, which needs a joiner first
- Penetrating damp from a failed cavity tray or render
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Where we work in Stow
- Aluminium frames
- Timber windows & doors
- Window sills
- Patio & French doors
- Composite doors
- uPVC windows