Scottish Borders · Scotland
Peel Window Mastic
Specialist window mastic for Peel: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Whistling draughts around closed windows
- A bead that doesn’t match the frame
- Rain getting in at the frame or under the sill
About our window mastic in Peel
Most frames have an outside joint and an inside one. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. If you have white mastic on grey or black frames and rain getting in at the frame or under the sill, we can help, on composite doors, uPVC windows and window sills alike.
Outdoor sealant needs a dry surface, so window work around Peel is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
We stand behind the work with a 12-month guarantee, so you are covered after we have gone.
- Place
- Peel (TD1)
- Wider area
- Scottish Borders
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Your questions about window mastic in Peel
Is Peel in your area for window mastic?
Yes. We work across all of Scotland, and Peel is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job.
Will you come out to Peel?
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.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Can you match the sealant to my frames?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames usually suit brown.
Can landlords and businesses book you?
Yes. We work in homes, commercial premises and hotels, and we are fully insured.
What do you need from me for a quote?
A short description and the location, with pictures by email if possible. If we need more, we’ll ask.
Are you fully insured?
Yes. We’re fully insured.
How many windows can you do in a day?
It depends on access, the old mastic and the size of the frames. We’ll tell you how long your job needs when we quote.
Places near Peel
More services for Peel
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
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.
Common problems we fix in Peel
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
The most common problems we see are:
- Mastic that is falling out in pieces
- Leaking joints at the ends of sills
- Water coming in at the bottom corners of a door
- Cold air getting in at the frame edge
Historic houses such as Peel House, about 0.1 miles south-west, show how far back building around Peel goes.
What your quote should include
- The length of the guarantee
- Who does the work, and how experienced they are
- What product goes in the joint
- What insurance they hold
The process
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a morning for a couple of windows and a door. Outside jobs in Peel need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
- Mention any sign-in or site rules at work premises
Getting a quote
Want a quote for window mastic? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
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For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What affects the cost of window mastic
Every job gets its own quote. This is what makes a difference:
- How many rooms, windows or areas are involved
- Access and height
- How much there is to do
- When we can work, for business premises
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
What we need to know
When you contact us, it’s useful to know:
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you are ready, email us at info@mrmastic.co.uk.
When something else is needed
A few problems are outside what sealant work can do:
- A sash or casement that won’t close properly
- Rotten timber, which needs a joiner first
- Damp coming through the wall itself rather than the frame joint
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before booking.
Surfaces we seal
- uPVC windows
- Window sills
- Composite doors
- Aluminium frames
- Timber windows & doors
- Patio & French doors
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Wipe condensation off the frames
- Use gentle cleaners on frames and sealant
- Keep drainage slots and sill grooves clear
- Look round the frames every year or so
Silicone can’t normally be painted, so mention any painting plans before work begins. We can use a paintable sealant where that matters.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
Frames and glazing around Peel
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
For landlords with property near Galashiels station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Peel is about 4 miles west of Galashiels, in the Scottish Borders. For window mastic in and around Peel, please send an email to info@mrmastic.co.uk for a quick quote. We cover the Scottish Borders from our Crawley base. Peel is one of 89 towns and villages in the Scottish Borders we cover. We also work in Edinburgh, around 26 miles away.
We cover every part of TD1 for window mastic. We also cover Ashiestiel (1 mile north-west), Caddonfoot (1 mile east), Clovenfords (1 mile north-east), Broadmeadows (3 miles south-west) and Yarrowford (3 miles south-west). Further out, we also cover Hawick (13 miles south), Peebles (12 miles west), Selkirk (5 miles south-east), Wilton (13 miles south), Innerleithen (6 miles west) and Melrose (7 miles east).
What’s near Peel
The nearest railway station is Galashiels station, about 3.8 miles east of the centre. A little further out are Old Gala House (3.6 miles east) and Peel Hill (4.8 miles south-east). Green spaces nearby include Haining Loch and Ashiesteel Hill.