Scottish Borders · Scotland
Window Mastic in Galashiels
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Galashiels. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked sealant at the sill ends
- Mastic that has split away from the wall
- White mastic on grey or black frames
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
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.
How we handle window mastic in Galashiels
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that cannot move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. If you’re dealing with hard, cracked sealant around windows and sealant in the wrong colour for the frame, we can help, whatever the surface.
Harled walls are common in Scottish towns like Galashiels, and sealing a frame against rough harling takes a sealant that grips and moves. A thin bead that hasn’t been worked into the surface soon lets water behind it.
The work is covered for a year after we finish. If anything is not right with it, send an email to info@mrmastic.co.uk.
- Where
- Galashiels (TD1)
- Region
- Scottish Borders
- Cover
- One year on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Nearby places to Galashiels
Also in Galashiels
Why deal with it now?
Working on frames from a ladder with a sealant gun is not easy, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. In flats with a shared stair in Galashiels, a leak from a failed seal can affect the flat below too, and that is much harder to put right.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will go through it with you.
What you get with us
- An ARBOMaster approved applicator
- Arbo and Everbuild products
- Experience in homes, commercial sites and hotels
- White, clear, grey or another colour, product permitting
See how sealant jobs are priced and our reviews.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Walk round the house once a year and look at the joints
- Paint up to the joint, not over it
- Avoid blasting the frames with a pressure washer
- Repaint timber before it’s bare
Most silicone sealants will not take paint, so mention any painting plans before work begins. We can use a paintable sealant where that matters.
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.
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- A door that needs adjusting, rehanging or new seals
- A sash or casement that won’t close properly
- A failed sealed unit that has misted up
If you are not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer before you book.
Joints and surfaces we work on
- Timber windows & doors
- Window sills
- uPVC windows
- Patio & French doors
- Aluminium frames
- Composite doors
Windows and doors in Galashiels
Historic houses like Peel House (about 3.8 miles west) are a reminder that the area around Galashiels has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Schools such as Galashiels Academy are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Historic houses such as Peel House, about 3.8 miles west, show how far back building around Galashiels goes, and older homes nearby need a sealant that suits their walls. For landlords with property near Galashiels station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Galashiels is about 28 miles south-east of Edinburgh, in the Scottish Borders. If you need window mastic in Galashiels, it’s easy to get a quote: please send an email to info@mrmastic.co.uk. We’re based in Crawley and cover the Scottish Borders. Across the Scottish Borders, we cover 89 places, and Galashiels is one of them. Our Edinburgh page covers work nearby (28 miles or so).
We cover every part of the TD1 postcode area for window mastic. Local streets include Market Street, High Street and Paton Street, all of which we cover. You will find Galashiels on the A7 and A72, so it’s easy for us to get to with everything needed for window mastic. Other places close to Galashiels include Langlee (1 mile east), Boleside (2 miles south), Tweedbank (2 miles south-east), Darnick (3 miles east) and Clovenfords (3 miles west). Larger places within reach include Hawick (13 miles south), Peebles (15 miles west), Kelso (15 miles east), Selkirk (5 miles south), Jedburgh (14 miles south-east) and Wilton (13 miles south). Being one of the Scottish Borders’s larger places, Galashiels has every kind of property, from flats to offices.
Local landmarks in Galashiels
Typical jobs here are in homes near Public House, among other places. There’s a railway station in Galashiels itself: Galashiels station. Well-known places in the area include Borders General Hospital (2.7 miles south-east) and Castle Holydean (4.4 miles south-east). Green spaces nearby include Eildon Mid Hill.
The process
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself normally takes anything from an hour or two to a full day, depending on how many frames there are, depending on the size of the job. A visit in Galashiels needs three things planned: access, parking and where the work is. Outside work depends on the weather, as sealant needs a dry surface.
- Each frame is looked over and we agree which ones need resealing.
- 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.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Mention any tricky access
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
Advice
Your questions about window mastic in Galashiels
What guarantee comes with window mastic in Galashiels?
All our work, in Galashiels and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Do you work for landlords with property near Galashiels station?
Yes, rental work is part of what we do. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear quote.
Do you come to Galashiels?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, Galashiels included.
What do you need from me for a quote?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply email us at info@mrmastic.co.uk.
Will the old sealant be removed?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
Can you get sealant to suit coloured frames?
Yes, in most cases. Tell us the frame colour when you get in touch and we will use the nearest match.
How we quote for window mastic
The quote reflects the job in front of us. We look at:
- Whether the work is at height
- Which sealant suits the joint
- How many areas need sealing
- The number and length of the joints
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Helping us quote
To help us quote quickly, please include:
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
Every job is quoted individually, so the first step is telling us about yours. Just drop us a line at info@mrmastic.co.uk with the details.
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 be quoted together.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.