Fife · Scotland
Window & door mastic in St Andrews, Fife
Our applicators work in St Andrews on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- Whistling draughts around closed windows
- Old mastic that has gone black or come away
- Cracked sealant at the sill ends
How to look after the new joints
So the new joints stay in good condition:
- Avoid blasting the frames with a pressure washer
- Repaint timber before it’s bare
- Air rooms to keep condensation down around windows
- Clear any debris from frame drain holes
Most silicone sealants will not take paint, so mention any painting plans before we start. There are paintable sealants for joints that need it.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
How we handle window mastic in St Andrews
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that cannot move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. We work on uPVC windows, timber windows & doors and patio & French doors, and people most often call us about rain getting in at the frame or under the sill and hard, cracked sealant around windows.
In and around a place like St Andrews, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain, so the mastic there works hard.
Your job is guaranteed for a year, as with all our work.
- Location
- St Andrews (KY16)
- Wider area
- Fife
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Places near St Andrews
More services for St Andrews
What we cannot put right
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Faulty window hardware
- A frame that has rotted at the joint
- Damp problems in the wall away from the window
If you’re not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer before booking.
What we seal
- Timber windows & doors
- uPVC windows
- Window sills
- Composite doors
- Aluminium frames
- Patio & French doors
Quotes for window mastic in St Andrews
For a quick quote, just ask. What matters most is:
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
- Whether the work is at height
- The size of the job
No two jobs are quite the same, so we quote each one individually. 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.
What to tell us for a quote
When you contact us, these details help:
- Whether it has been sealed before
- The rough size of the job
- Where the property is
- How we’d reach the joints
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Why deal with it now?
Draughts and leaks do not always mean new windows. Where the frames are sound, new mastic generally deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we will tell you. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- Sealant colour chosen to suit
- Every job guaranteed for a year
- We leave the area clean and tidy
- Homes, businesses and hotels
Take a look at what affects the cost and what customers say.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
What window mastic looks like in St Andrews
St Andrews is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. 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.
Rented homes near Leuchars station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you look after a building such as Madras College, larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around St Andrews, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
St Andrews is about 12 miles south-east of Dundee, in Fife. Anywhere in KY16, we can carry out window mastic at your property. Our Fife coverage runs to 133 places, and St Andrews is one of them. We also work in Dundee, around 12 miles away.
Jobs for window mastic in KY16 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Station Road, Church Square and Market Street and the roads around them. St Andrews sits on or near the A91 and A915, which makes travel easy. We also cover Strathkinness (3 miles west), Boarhills (4 miles east), Guardbridge (4 miles north-west), Leuchars (4 miles north-west) and Lathones (5 miles south). Within a short drive, we also cover 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). As one of the bigger places in Fife, St Andrews has homes, rented property and businesses of every kind.
Local landmarks in St Andrews
Typical jobs here are in homes near 97-99 South Street pub, Town Hall and Library and New Park School and the streets around them. St Andrews’s nearest station is Leuchars station, roughly 4.5 miles north-west. A little further out are St Andrews Castle (0.8 miles north-east) and St Andrews Museum (within half a mile north).
Questions from St Andrews
Does living near the coast affect window mastic in St Andrews?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Can you help a landlord with a rental near Leuchars station?
Yes, landlords and agents are among the people we work for. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Do you cover St Andrews?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
Can you do the inside joint as well?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We do one or both.
Can new window sealant be painted?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area.
What happens on the day
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes most of a day for a typical house, less for a few frames. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
- Let us know about earlier repairs to the joints
Get a quote
If you’re in St Andrews and need window mastic, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.