Fife · Scotland
External & façade joints in St Andrews, Fife
Movement joints in St Andrews need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Never let anyone fill a movement joint with mortar
- Walk round the building once a year and look at the joints
- Show decorators and builders where the movement joints are
- Keep soil, plants and ivy away from the joints
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
About our external mastic in St Andrews
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the joint doesn’t stand out. If you’re dealing with gaps where render, brick and frames meet and panel joints letting water in, we can help.
In and around a place like St Andrews, many buildings face open ground and take the full weather. Outside joints on exposed walls work hard.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Place
- St Andrews (KY16)
- Wider area
- Fife
- Guarantee
- One year on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Common problems we fix in St Andrews
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Any of these means the joints need attention:
- Joints with sealant missing in places
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
- Old sealant gone brittle and cracked
Schools such as Madras College are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- Whether VAT is included
- What preparation is included
- Are they insured?
- How long the guarantee is
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so these are the limits:
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
- Damp that isn’t coming from the joint
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer.
Where we work in St Andrews
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
Different surfaces, different methods
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
What external mastic looks like in St Andrews
St Andrews is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
Letting a property close to Leuchars station? Then outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around St Andrews, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
St Andrews is about 12 miles south-east of Dundee, in Fife. St Andrews gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. St Andrews is one of 133 places in Fife where we work. There’s also a page for Dundee, about 12 miles away.
We work across KY16 for external mastic and the streets around it. Whether your property is on Station Road, Church Square and Market Street or a nearby road, we can help. St Andrews is on the A91 and A915, so it’s easy for us to get to. Neighbouring places we cover for external mastic include Strathkinness (3 miles west), Boarhills (4 miles east), Guardbridge (4 miles north-west), Leuchars (4 miles north-west) and Lathones (5 miles south). Larger places within reach include Leven (12 miles south-west), Cupar (8 miles west), Methil (13 miles south-west), Newport-on-Tay (9 miles north-west), Anstruther (9 miles south-east) and Tayport (8 miles north). St Andrews is one of the larger places we cover in Fife.
Local landmarks in St Andrews
In St Andrews, that means homes and buildings near 97-99 South Street pub, Town Hall and Library and New Park School. The nearest railway station is Leuchars station, roughly 4.5 miles north-west. Nearby you will also find St Andrews Castle (0.8 miles north-east) and St Andrews Museum (less than half a mile north).
Your questions about external mastic in St Andrews
Will you come out to St Andrews?
Yes, St Andrews is covered. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Does living near the coast affect external mastic in St Andrews?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are generally the first to need attention.
What information do you need?
Tell us what needs doing and where. If we need more, we’ll ask.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on the building. We will tell you when we quote.
Will the old sealant be removed?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
Can tenants book the work?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Quotes for external mastic in St Andrews
Some jobs are bigger than they look, and some smaller. The main factors:
- How many areas need sealing
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
- The number and length of the joints
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- Any previous sealing or DIY work
- The rough size of the job
- Where the job is, and your postcode
For external mastic in St Andrews, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we’ll agree the price before any work begins.
What happens on the day
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building for a typical job. Around St Andrews, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Let us know about parking restrictions
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
Getting a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.