Scottish Borders · Scotland
Sand Mastic in Galashiels
Sand mastic across Galashiels and nearby, with old sealant always removed completely and a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Window mastic to renew ahead of painting
- Mastic round period door frames that has failed
Sand mastic for homes and businesses in Galashiels
We work across Galashiels renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. Common call-outs are for a silicone bead on a sash window that spoils the look and mastic that needs renewing before redecorating, across tenement windows, period & listed homes and sash and case windows.
In a town like Galashiels, plenty of homes have harled (roughcast) walls, and the joint between a frame and rough harling needs a sealant that can grip and flex. A thin bead that hasn’t been worked into the surface soon lets water behind it.
Your job is guaranteed for a year, as with all our work.
- Where
- Galashiels (TD1)
- Wider area
- Scottish Borders
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What sand mastic looks like in Galashiels
With historic houses such as Peel House (about 3.8 miles west) nearby, there’s older building stock in the area around Galashiels as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Historic houses such as Peel House, about 3.8 miles west, show how far back building around Galashiels goes. If you look after a building such as Galashiels Academy, larger buildings have plenty of frames, and the mastic around each one ages.
Galashiels is about 28 miles south-east of Edinburgh, in the Scottish Borders. Our applicators cover sand mastic for homes and businesses in Galashiels and the surrounding area, as part of our work across the Scottish Borders. Galashiels is one of 89 towns and villages in the Scottish Borders we cover for sand mastic. You can also see our page for Edinburgh, about 28 miles away.
Our applicators cover all of the TD1 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on Market Street, High Street and Paton Street or anywhere close by, our applicators can take on the job. Galashiels is on the A7 and A72, so it’s easy for us to get to. We also cover the places around Galashiels: Langlee (1 mile east), Boleside (2 miles south), Tweedbank (2 miles south-east), Darnick (3 miles east) and Clovenfords (3 miles west). We also work in nearby towns such as 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
We work in homes and buildings around Public House and the streets around them. Galashiels has its own railway station: Galashiels station. Nearby you’ll also find Borders General Hospital (2.7 miles south-east) and Castle Holydean (4.4 miles south-east). Green spaces nearby include Eildon Mid Hill.
Signs you need sand mastic in Galashiels
Paint, silicone or cement used over old mastic causes problems. They do not suit the joint and we normally remove them.
Look out for these signs:
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
- Crumbling sand mastic round a window
- Patchy fillers round a sash window
If you let a flat or house near Galashiels station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Questions to ask before booking
- Whether they seal over old material or remove it
- Whether they’re fully insured
- Which sealant they’ll use, and why
- Whether VAT is included
Galashiels: your questions answered
Can you do sand mastic in Galashiels?
Yes, Galashiels is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we will give you a clear quote.
Do you work for landlords with property near Galashiels station?
Yes. We work for landlords and letting agents as well as householders. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
What does sand mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Towns and villages near Galashiels
Also in Galashiels
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Renew mastic before redecorating the windows
- Avoid heavy scraping on the mastic joint
- Find out about consent before window work on a listed home
- Inspect the joints round the windows every year or so
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
Surface by surface
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Should I try it myself first?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The process
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job generally takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. In a Scottish town like Galashiels, parking is normally straightforward, though older centres can be tighter. If you are in a flat with a shared stair or a door entry system, let us know when you book.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Tell us if parking is tricky
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
How to get a quote
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand.
Related advice
Why act early in Galashiels
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. In flats with a shared stair in Galashiels, a leak from a failed seal can affect the flat below too, which turns a small job into a bigger one.
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Galashiels
- Any old sealant cut out fully, not covered over
- Rated 4.9 stars on Google
- Experience in homes, commercial sites and hotels
- More than 20 years in sealant work
What affects the quote in Galashiels
There’s no set price list, because jobs vary so much. What we look at:
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- The type of sealant required
- Any working-time requirements on site
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.
Helping us quote
Before you ask for a quote, have a think about:
- Photos by email, if that is easy
- Whether it’s a home or a business
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.