South Ayrshire · Scotland
External Mastic in Alloway
Specialist external mastic for Alloway: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps where render, brick and frames meet
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
External mastic in Alloway, done properly
Low-level joints can usually be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. Typical jobs include weathered mastic that no longer stretches and leaking joints around cladding and façade panels, across copings & trims, render & cladding joints and façade panels.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. Newer houses need their movement joints and roofline trims kept sound.
Whatever the size of the job, you get the same 12-month guarantee in Alloway and across South Ayrshire.
- Where
- Alloway (KA7, KA6)
- Region
- South Ayrshire
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Common problems we fix in Alloway
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Any of these means the joints need attention:
- Moss and dirt in joints with no sealant left
- Rigid filler in a joint that should flex
- Brick movement joints where the sealant has split
- Cracked joints where brick meets render or frames
If you look after a building such as Belmont Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- Are they insured?
- What happens if they find a problem under the old sealant
- How much experience the applicator has
- What preparation is included
How it works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The job generally takes anything from a few hours to several days, depending on the building. Around Alloway, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Keep children and pets away from the work area
Ask for a quote
To get a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Related advice
What else we do in Alloway
Why it’s worth doing now in Alloway
Sealing over the top of old mastic does not hold for long. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. In an older home around Alloway, damp from a failed joint can get into timber and plaster.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Alloway clients choose us
- We agree the colour with you first
- Homes, businesses and hotels
- Tidy, careful work
- We never seal over old sealant
Take a look at how sealant jobs are priced and customer reviews.
Surface by surface
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before sealing.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Quotes for external mastic in Alloway
Your quote is based on your job. We look at:
- The number of rooms or windows
- Which sealant suits the joint
- Working hours on commercial sites
- The number and length of the joints
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
What to tell us for a quote
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- Where the property is
- Whether it has been sealed before
Need a quote? Please drop us a line at info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Ask before painting over external sealant
- Fix overflowing gutters above sealed joints
- Make sure movement joints are not pointed over
- Keep soil, plants and ivy away from the joints
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Common questions in Alloway
Can you help a landlord with a rental near Ayr station?
Yes, we work for landlords and agents. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
Will you come out to Alloway?
Yes. Alloway is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Can you reach joints on upper floors?
It depends on the building. Tell us the height, the number of joints and what’s below them and we’ll confirm how they can be reached safely.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
What is a movement joint?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
What external mastic looks like in Alloway
Alloway is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Letting a property close to Ayr station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to Alloway Kirk include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Alloway is about 2 miles south of Ayr, in South Ayrshire. Whether you’re in the middle of Alloway or further out, we cover external mastic for every kind of property. 52 places in South Ayrshire are on our list. There’s also a page for Glasgow, about 32 miles away.
Every address in KA7 and KA6 is covered for external mastic, from the main roads to the quietest streets. We cover properties on Baird Road, Woodend Road and Doonholm Road and the roads around them. Neighbouring places we cover for external mastic include Doonfoot (1 mile west), Seafield (1 mile north), Belmont (1 mile north), Forehill (2 miles north-east) and Ayr (2 miles north). We also work in nearby towns such as Troon (8 miles north), Prestwick (4 miles north), Heathfield (3 miles north), Maybole (6 miles south), Drongan (7 miles east) and Joppa (5 miles east).
Around Alloway
The nearest railway station is Ayr station, about 1.8 miles north of the centre. Well-known places in the area include Rozelle House Museum and Galleries (within half a mile north-east) and Greenan Castle (1.5 miles west). Open spaces near Alloway include Carcluie Loch.