Scottish Borders · Scotland
Peebles Window Mastic
Professional window mastic in and around Peebles, with old sealant always removed completely.
- Cold air getting in at the frame edge
- Black, perished sealant on frames
- Mastic that has split away from the wall
Window mastic in Peebles, done properly
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. We work on composite doors, aluminium frames and window sills, and people most often call us about white mastic on grey or black frames and gaps between the frame and the inside reveal.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Peebles (EH45)
- Wider area
- Scottish Borders
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Do you need window mastic in Peebles?
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That is what backing rod is for.
Any of these means the joints need attention:
- Whistling draughts around closed windows
- Cracked or shrunken mastic around the frame
- Cracked internal joints between frame and plaster
- Sealant in the wrong colour for the frame
If you live in an older home near Peebles Old Parish Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- The length of the guarantee
- Who does the work, and how experienced they are
- What the quote includes, VAT included or not
- Which colour the sealant will be
Aftercare tips
To keep the joints looking good and working properly:
- Paint up to the joint, not over it
- Walk round the house once a year and look at the joints
- Keep jet washers away from the mastic
- Repaint timber before it’s bare
A yearly look round the frames is enough. Small splits are simple to catch before they leak.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
More services for Peebles
Work for landlords, hotels and businesses
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
If you manage several properties in or around Peebles, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
The process
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from an hour or two to a full day, depending on how many frames there are. Outside jobs in Peebles need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Clear the area around the work
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Simply email us at info@mrmastic.co.uk and describe the job, and photos are welcome.
Related advice
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Damp coming through the wall itself rather than the frame joint
- Soft or decayed wood in the frame
- Misting between the panes of a double-glazed unit (that needs a new unit)
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before booking.
Surfaces we seal
- Composite doors
- Patio & French doors
- Aluminium frames
- Window sills
- Timber windows & doors
- uPVC windows
Surface by surface
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the sealant goes in between frame and wall.
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
Common questions in Peebles
Will you come out to Peebles?
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.
What guarantee comes with window mastic in Peebles?
All our work, in Peebles and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Do you work for landlords and businesses?
Yes. Domestic, commercial and hotel work are all part of what we do.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can you get sealant to suit coloured frames?
Normally, yes. Mention the frame colour when you ask for a quote and we will use the nearest match.
Can you seal the gap between the frame and the plaster indoors?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We do one or both.
Will new mastic stop draughts?
It will if the frame joint is the problem. We check where the draught is before work begins.
Are you fully insured?
Yes, we’re fully insured.
What affects the cost of window mastic
Jobs vary more than people expect. The main factors:
- How much there is to do
- Any mould that needs treating
- Which sealant suits the joint
- Whether the work is at height
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- A few photos by email, if you can
- Any previous sealing or DIY work
- Where the job is, and your postcode
- What’s wrong with the joints now
To get a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Peebles 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. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
For site and facilities teams at buildings such as Peebles High School, larger buildings have plenty of frames, and the mastic around each one ages.
Peebles is about 20 miles south of Edinburgh, in the Scottish Borders. Whether you are in the middle of Peebles or further out, we cover window mastic for every kind of property. Peebles is one of 89 places in the Scottish Borders we cover for window mastic. We also work in Edinburgh, about 20 miles from Peebles.
Postcode districts we cover here for window mastic: EH45. If you need window mastic at a property on High Street, Kingsland Square and St Michael's Wynd or a nearby road, our applicators can take on the job. Main roads around Peebles include the A72 and A703, so getting to you is simple. Close by, we work in Cardrona (3 miles east), Cardrona Village (3 miles east), Eddleston (4 miles north), Innerleithen (6 miles south-east) and Walkerburn (7 miles east). Larger places within reach include Galashiels (15 miles east), Selkirk (15 miles south-east), West Linton (9 miles north-west) and Clovenfords (13 miles east). As one of the bigger places in the Scottish Borders, Peebles has homes, rented property and businesses of every kind.
Near you in Peebles
In Peebles, that means homes and buildings near County Hotel, among other places. A little further out are Peebles Castle (within half a mile west) and Hay Lodge Hospital (less than half a mile west). Open spaces near Peebles include Ven Law.