Scottish Borders · Scotland
Window Mastic in Heiton
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Heiton. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant in the wrong colour for the frame
- Water coming in at the bottom corners of a door
- Whistling draughts around closed windows
What happens if it’s left?
If you are painting or rendering, reseal at the same time. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. In an older home around Heiton, damp from a failed joint can get into timber and plaster.
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.
Why Heiton customers choose us
- One-year guarantee on every job
- Neat joints and a tidy finish
- Colour picked to suit the job
- Colour agreed with you before we start
Take a look at what affects the cost and customer reviews.
About our window mastic in Heiton
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. If you have cold air getting in at the frame edge and mastic that has split away from the wall, we can help.
Mastic can only go onto a dry joint, so outside work in Heiton depends on the weather. Let us know about access to every frame, including any upstairs.
You get a one-year guarantee, the same in Heiton as everywhere else we work.
- Place
- Heiton (TD5)
- Wider area
- Scottish Borders
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What sealant work can’t fix
We won’t take on work that won’t last, so these are the limits:
- A frame that has rotted at the joint
- Damp coming through the wall itself rather than the frame joint
- A sash or casement that will not close properly
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Where we work in Heiton
- Timber windows & doors
- uPVC windows
- Composite doors
- Patio & French doors
- Aluminium frames
- Window sills
How it works
The work is kept neat and contained to the joints we’re treating. Expect the work to take a morning for a couple of windows and a door, and we tell you how long to leave it before we go. 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.
- 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
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we’re working on
- Mention any parking rules near the property
How to get a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
Landlords, agents and businesses in Heiton
We also work for property managers and facilities teams. Several sites can go on one quote, and we are fully insured for the work.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
Your questions about window mastic in Heiton
Is Heiton within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is window mastic in Heiton guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
How long will my window job take?
A handful of frames is a short visit, while a whole house takes longer. We confirm the timing with your quote.
Will the old sealant be removed?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What do you need from me for a quote?
Let us know what needs doing and where. We will ask anything else we need to know.
How much does window mastic cost in Heiton?
Every job is different, so each one gets its own quote. To get one, send an email to info@mrmastic.co.uk with a short description of the job.
Can you get sealant to suit coloured frames?
Generally, yes. Mention the frame colour when you ask for a quote and we will use the nearest match.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Also in Heiton
What the job involves on each surface
Aluminium frames
Coated aluminium needs a compatible sealant. We use a neutral-cure product.
uPVC windows
uPVC expands and contracts noticeably with temperature, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
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 the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What affects the cost of window mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- The size of the job
- Working hours on commercial sites
- Any mould that needs treating
- The product the joint needs
Combining jobs into one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. We will send you a clear quote for the lot.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- How we’d reach the joints
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.
Heiton homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against 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 and around Heiton, as anywhere, good window mastic starts with a clean, dry, properly prepared joint. For an older house near a landmark such as Roxburgh Parish Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Heiton is about 14 miles east of Galashiels, in the Scottish Borders. Our applicators cover window mastic for homes and businesses in Heiton, as part of our work across the Scottish Borders. Our the Scottish Borders coverage runs to 89 places, and Heiton is one of them. You can also see our page for Edinburgh, roughly 39 miles from Heiton.
Here we cover the TD5 postcode area for window mastic. Close by, we work in Roxburgh (1 mile west), Kelso (2 miles north-east), Sprouston (4 miles north-east), Nisbet (4 miles south-west) and Ednam (4 miles north). Further out, we also cover Galashiels (14 miles west), Selkirk (15 miles west), Jedburgh (7 miles south-west), Duns (15 miles north), Melrose (11 miles west) and Earlston (10 miles north-west).
What’s near Heiton
Nearby you will also find Kelso Museum And Turret Gallery (2.2 miles north-east) and Kelso Hospital (2.5 miles north). The countryside around Heiton includes Peniel Heugh and Wooden Loch.