Aberdeen · Scotland
Sand mastic for sash & case windows in Cornhill, Aberdeen
Professional sand mastic in and around Cornhill, with every bit of old sealant taken out first and a 12-month guarantee.
- Wind and rain getting in round a sash window
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Avoid heavy scraping on the mastic joint
- Renew mastic before redecorating the windows
- Check the mastic when you check the paintwork
- Check with your local planning authority if your home is listed
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
About our sand mastic in Cornhill
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditionally, sand mastic is left unpainted and we’ll advise if you’re redecorating. If you are dealing with modern sealant on a period surround and old sand mastic that has cracked, crumbled or fallen out, we can put it right, whatever the surface.
In a Scottish city, many flats have windows two, three or four floors up, so the mastic outside can go unchecked for years. For a flat in Cornhill, access is the first thing to plan.
All of our work is guaranteed for twelve months, in Cornhill and everywhere else we cover.
- Place
- Cornhill (AB16, AB25, AB24)
- Region
- Aberdeen
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What affects the quote in Cornhill
There’s no set price list, because jobs vary so much. The quote depends on:
- Whether the work is at height
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Helping us quote
To make quoting easier, please include:
- Any access issues, like height or stairs
- Where the job is, and your postcode
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
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 will talk you through the work and give you a clear quote.
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Crumbling stone or brickwork round the window
- Sashes that rattle, stick or won’t open
- Putty and glazing repairs
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Period & listed homes
- Stone surrounds
- Timber door frames
- Tenement windows
- Brick reveals
- Sash and case windows
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
If you manage several properties in or around Cornhill, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Signs you need sand mastic in Cornhill
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
Signs it’s time to call us include:
- Tired mastic found when preparing windows for paint
- Cement or filler used on old window joints that has cracked
- Modern sealant on a period surround
- Gaps between timber frames and stone or brick
Rented homes near Aberdeen station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- How long to leave it before use
- The length of the guarantee
- Whether the sealant suits the joint
- How hidden problems are handled
Sand mastic in Cornhill: local notes
Cornhill is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. The Tenements (Scotland) Act 2004 sets out how owners share the upkeep of common parts like the roof and outside walls, and many buildings use a factor to arrange it. Who owns the windows depends on the title deeds.
In the older streets around St Ninian's Church, the joint between an old wall and a newer frame is usually the first place rain gets in. For site and facilities teams at buildings such as Northfield Academy, larger buildings have plenty of frames, and the mastic around each one ages.
Cornhill is about 1 mile north-west of Aberdeen, in Aberdeen. Whether you’re in the middle of Cornhill or further out, sand mastic is available for homes and businesses alike. Cornhill is one of 63 towns and villages in Aberdeen where we work for sand mastic.
Postcode districts we cover here for sand mastic: AB16, AB25 and AB24. That includes homes and businesses on Rowan Road, Morgan Road and Cairncry Road. Cornhill is on the A92, which makes it straightforward to reach. We also cover the places around Cornhill: Cummings Park (1 mile north-west), Aberdeen (1 mile south-east), Midstocket (1 mile south), Berryden (1 mile east) and Rosemount (1 mile south-east). Larger places within reach include Dyce (4 miles north-west), Portlethen (7 miles south), Cults (3 miles south-west), Cove Bay (4 miles south-east), Torry (3 miles south-east) and Peterculter (6 miles south-west).
What’s near Cornhill
We work in homes and buildings around Oakbank School, Gilcomstoun Primary School and Stewart Park. Cornhill’s nearest station is Aberdeen station, about 1.8 miles south-east of the centre. Nearby you will also find King's Museum (1.3 miles north-east) and Cowdray Medical Pavilion (within half a mile south). For a walk, there’s Rubislaw Quarry and Gallows Hill.
Why deal with it now?
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. In a Scottish city tenement, failed sealant affects more than one flat: water can reach the flat below, and gaps in shared walls or fire-stopping affect the whole stair.
The cost depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Why book with us
- We’re fully insured
- ARBOMaster approved applicator
- Tidy, careful work
- Anti-fungal silicone where joints get wet
Take a look at what affects the cost and customer reviews.
What happens on the day
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints in most cases. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. For a job in Cornhill, tell us the floor, how the door entry system works and where we can park nearby.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Let us know about earlier repairs to the joints
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you’re ready, drop us a line at info@mrmastic.co.uk.
Related advice
Your questions about sand mastic in Cornhill
Does living near the coast affect sand mastic in Cornhill?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Who arranges sealant work on the shared parts of a tenement in Cornhill?
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.
What does sand mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before we start.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in and agree one before we start.
Do you cover Cornhill?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland, and that includes Cornhill.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.