Glasgow · Scotland
Sand mastic for sash & case windows in Summerston, Glasgow
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Summerston, backed by a one-year guarantee. Call for a quick quote.
- Wind and rain getting in round a sash window
- Cracked mastic round a front door frame
- Modern sealant on a period surround
Landlords, agents and businesses in Summerston
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
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.
Sand mastic in Summerston, done properly
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we will advise if you are redecorating. We work on stone surrounds, timber door frames and period & listed homes, and the jobs we see most are window mastic to renew ahead of painting and silicone on a period window that looks wrong.
In a Scottish city, many flats have windows two, three or four floors up, so the mastic outside can go unchecked for years. Access is the first thing to plan for a job in Summerston, and in a tenement the outside of the building may be a shared repair.
Big or small, it’s backed by our one-year guarantee.
- Where
- Summerston (G20, G23, G61)
- Region
- Glasgow
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Places near Summerston
What else we do in Summerston
Your questions about sand mastic in Summerston
How do repairs to the shared parts of a tenement in Summerston get organised?
Most tenements arrange shared repairs through the owners or a property factor. The Tenements (Scotland) Act 2004 sets the rules for common parts if the deeds do not, and we can quote for the factor or the owners directly.
Is Summerston in your area for sand mastic?
Yes, Summerston is within the area we cover. Our work covers the whole of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Is it possible to take out silicone and use sand mastic instead?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will tell you what we are using.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Do you have insurance?
Yes. Full insurance covers our work.
Will the old sealant be removed?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
How the visit works
On the day, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work starts. Most jobs take anything from a few hours to a full day, depending on how many windows. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. For a job in Summerston, tell us the floor, how the door entry system works and where we can park nearby.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Advice
Windows and doors in Summerston
The west of Scotland is wetter than the east, so there’s plenty of rain for the mastic around older windows and doors to keep out. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Historic houses such as Tenement House, about 2.6 miles south, show how far back building around Summerston goes. For landlords with property near Summerston station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Summerston is about 2 miles south-east of Bearsden, in Glasgow. Wherever you are in the G20 postcode area, our applicators can take on sand mastic. Our area takes in 183 places across Glasgow, large and small.
Postcode districts we cover here for sand mastic: G20, G23 and G61. If you need sand mastic at a property on Torrin Road, Cadder Road and Harris Road or anywhere close by, our applicators can take on the job. Neighbouring places we cover for sand mastic include Bardowie (2 miles north), Bishopbriggs (3 miles east), Cadder (3 miles north-east), Balmore (3 miles north-east) and Baldernock (3 miles north). Larger places within reach include Glasgow (3 miles south), Garnethill (3 miles south), Anderston (3 miles south), Calton (4 miles south-east), Kelvingrove (3 miles south) and Blythswood Hill (3 miles south).
Landmarks near Summerston
Locally, jobs take us to homes and businesses close to Dawsholm Park. Summerston has its own railway station: Summerston station. Nearby you’ll also find Ruchill Hospital (1.5 miles south-east) and Glasgow Museum of Transport (2.4 miles south). Green spaces nearby include Lenzie Moss and Castle Hill.
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Common problems we fix in Summerston
Shallow joints are a common cause. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Common reasons people contact us are:
- Gaps where the frame meets the masonry
- Window mastic to renew ahead of painting
- Mastic worn away on windows facing the weather
- Silicone on a period window that looks wrong
If you look after a building such as John Paul Academy, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before booking
- How much experience the applicator has
- Are they insured?
- When the joint can take water or movement
- What product goes in the joint
What we cannot put right
Before booking, it’s worth knowing the limits:
- Sashes that rattle, stick or won’t open
- Decayed frames that need repair
- Damaged stone surrounds
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before booking.
Surfaces we seal
- Timber door frames
- Sash and case windows
- Period & listed homes
- Brick reveals
- Stone surrounds
- Tenement windows
How the job changes by surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Quotes for sand mastic in Summerston
We quote each job individually. These are the things that affect it:
- How easy the joints are to reach
- The type of sealant required
- The number of rooms or windows
- Whether there’s mould to deal with
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
- The type of property
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.