Scottish Borders · Scotland
Window & door mastic in Innerleithen, Scottish Borders
Mastic around window and door frames, sills and patio doors for homes and businesses in Innerleithen and across the Scottish Borders. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Rain getting in at the frame or under the sill
- Cracked or shrunken mastic around the frame
- Draughty joints inside around the window
How we handle window mastic in Innerleithen
A window frame and the wall around it expand and shrink at different rates. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. So the sealant has to stretch and recover, which is why we use a low-modulus product. We work on uPVC windows, window sills and patio & French doors, and the jobs we see most are rushed sealant from a window installation and draughts coming in around windows and doors.
Mastic can only go onto a dry joint, so outside work in Innerleithen depends on the weather. Tell us about access to all the windows and doors, upstairs included.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Innerleithen (EH44)
- Region
- Scottish Borders
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Why deal with it now?
Failed mastic is not a reason to replace sound windows. Where the frames are sound, new mastic normally deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we will tell you. In an older home around Innerleithen, damp from a failed joint can get into timber and plaster.
Leaving a failed joint usually makes the job bigger, not smaller. If you are not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Why Innerleithen customers choose us
- Homes, businesses and hotels
- An ARBOMaster approved applicator
- We leave the area clean and tidy
- Quality sealants from Arbo and Everbuild
See our cost guide or customer reviews.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Keep paint and stain on wooden frames in good order
- Wash the frames with mild soapy water
- Paint up to the joint, not over it
- Ventilate rooms so frames do not stay wet inside
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
Leaks generally show up in wet, windy weather, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
Frames and glazing around Innerleithen
Under the Repairing Standard, private landlords in Scotland have to keep homes 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 the older streets around Innerleithen Parish Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Innerleithen is about 10 miles west of Galashiels, in the Scottish Borders. We provide window mastic to homes and businesses in Innerleithen and the surrounding area. We cover 89 towns and villages across the Scottish Borders, from the larger towns to small villages. There’s also a page for Edinburgh, roughly 23 miles from Innerleithen.
Here we cover the EH44 postcode area for window mastic. You will find streets such as High Street, Pirn Road and Horsbrugh Terrace, all of which we cover. With the A72 and B709 close by, Innerleithen is easy for our applicators to reach for window mastic. Nearby, we also carry out window mastic in Walkerburn (2 miles east), Cardrona Village (2 miles north-west), Cardrona (2 miles north-west), Peebles (6 miles north-west) and Ashiestiel (6 miles east). Within a short drive, we also cover Galashiels (10 miles east), Selkirk (10 miles south-east), Melrose (13 miles east), West Linton (15 miles north-west), Earlston (15 miles east) and Lauder (14 miles north-east). Innerleithen is one of the larger places we cover in the Scottish Borders.
Near you in Innerleithen
Well-known places in the area include Horsburgh Castle (3.3 miles north-west) and Robert Smail's Printing Works (under half a mile west). Not far away are Lee Pen.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Landlord and commercial work in Innerleithen
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Different surfaces, different methods
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that, where a rigid one would crack.
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the new bead is laid against the frame and the wall and tooled smooth.
Towns and villages near Innerleithen
What else we do in Innerleithen
What we are called out for in Innerleithen
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
Common reasons people contact us include:
- Sealant in the wrong colour for the frame
- Water coming in at the bottom corners of a door
- Old mastic that has gone black or come away
- Cold air getting in at the frame edge
Around Innerleithen, as everywhere, window mastic is only as good as the preparation behind it.
What to look for in a quote
- How the colour is chosen
- Are they insured?
- How the surfaces are prepared before sealing
- Is VAT in the price?
Questions from Innerleithen
Can you do window mastic in Innerleithen?
Yes, Innerleithen is within the area we cover. Our work covers the whole of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Do you cover smaller places like Innerleithen?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do you work for landlords and businesses?
Yes. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Is the new sealant paintable?
Most silicone can’t be painted. Let us know beforehand, and we will use a paintable product where it suits.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Can you do the inside joint as well?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes most of a day for a typical house, less for a few frames. In smaller Scottish places, parking is generally less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Clear items away from the joints we’re working on
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
Ask for a quote
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.