Dundee · Scotland
St Marys Glazing Silicone
Glazing silicone for conservatories, rooflights, glass panels and shower screens for St Marys, backed by a one-year guarantee. Ask us for a quote.
- Black or yellowed silicone on glass joints
- Rooflight joints letting water in
- New silicone smeared over old sealant
Leave it or put it right?
Leaks get worse, not better. Left, water can mark floors, damage plaster and rot timber so early action saves a bigger repair. Private landlords in St Marys must meet the Repairing Standard, and damp or leaks can fall short of it, so failed sealant is best replaced before it becomes a complaint.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and send you a clear quote before we start.
What you get with us
- 20+ years of sealant experience
- Neat joints and a tidy finish
- Arbo and Everbuild products
- Domestic, commercial and hotel work
Take a look at our cost guide and our reviews.
Glazing silicone in St Marys
Glass, frames and walls all move at different rates, so the sealant between them does a lot of work. Once it splits or comes away, water finds a way through. We cut it out and reseal with a glazing silicone suited to the joint. Common call-outs are for sealant that was laid over old silicone and failed and leaks from the base of a shower screen, across conservatory frames, glass balustrade bases and rooflights.
Tenement flats in Scotland’s cities often have windows high above the street, so the mastic outside can go unchecked for years. Access is the first thing to plan for a job in St Marys.
Whatever the size of the job, you get the same one-year guarantee.
- Where
- St Marys (DD3, DD2)
- Wider area
- Dundee
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How to look after the new joints
To keep the joints looking good and working properly:
- Keep scrapers and blades away from the silicone
- Keep air moving in the conservatory
- Stick to mild cleaners on glass
- Inspect the sealant on glazing annually
Keep conservatory gutters clear, so water drains away from the joints. Blocked gutters can push water where it shouldn’t go.
A leaking shower screen may not show at first. Water can soak into the floor or reach the room below long before you see it.
Also near St Marys
Other services in St Marys
What affects the quote in St Marys
You will get a clear quote before we start. It’s based on:
- How many rooms, windows or areas are involved
- The size of the job
- Mould in or behind the old joints
- The old material and how stubborn it is
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. You will know the price before we begin.
Helping us quote
When you call or email, these details help:
- How we’d reach the joints
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
- The rough size of the job
For glazing silicone in St Marys, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
When to call us in St Marys
Not every leak is a sealant problem: failed roof panels, slipped glazing bars and blocked gutters cause them too. We find the cause before we seal anything.
Look out for these signs:
- A quick top-up bead that didn’t last
- Leaking glazing joints on a rooflight
- Black or yellowed silicone on glass joints
- Leaks where conservatory glass meets the frame
Managing a site like Lawside Academy? Then the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- How much experience the applicator has
- How long to leave it before use
- Whether VAT is included
- Are they insured?
Frames and glazing around St Marys
St Marys 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 glazing joints and frame seals, which can dry out and crack sooner where a building faces the weather. Historic houses like Camperdown House (about 1.2 miles south-west) are a reminder that the area around St Marys has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Letting a property close to Invergowrie station? Then leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. Historic houses such as Camperdown House, about 1.2 miles south-west, show how far back building around St Marys goes.
St Marys is about 2 miles north-west of Dundee, in Dundee. Whether you’re in the middle of St Marys or further out, we cover glazing silicone for every kind of property. Our Dundee coverage runs to 50 places, and St Marys is one of them.
We work across DD3 and DD2 for glazing silicone. Streets in the area include Troon Road, Troon Avenue and Gullane Road, all of which we cover. Nearby, we also carry out glazing silicone in Ardler (1 mile south), Dryburgh (1 mile south), Camperdown (1 mile south-west), Lochee (1 mile south) and Birkhill (2 miles west). We also work in nearby towns such as Broughty Ferry (6 miles east), Stobswell (3 miles south-east), Monifieth (7 miles east), Barnhill (6 miles east), Pitkerro (3 miles east) and Whitfield (3 miles east). As one of the bigger places in Dundee, St Marys has every kind of property, from flats to offices.
Near you in St Marys
Locally, jobs take us to homes and businesses close to Cox Branch Library and Balgay Hill, among other places. The closest station to St Marys is Invergowrie station, about 3 miles south-west of the centre. Nearby you’ll also find Wellgate Centre (2.6 miles south-east) and Strathmartine Castle (1.5 miles north). Green spaces nearby include Balgay Hill and Trottick Mill Ponds.
Questions from St Marys
Does the coastal weather in St Marys affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
How is work on the outside of a tenement in St Marys generally arranged?
Most tenements arrange shared repairs through the owners or a property factor. The Tenements (Scotland) Act 2004 covers the common parts where the deeds don’t.
Do you replace glass?
No, our work is the silicone. Glass and sealed units need a glazier.
Do you seal glass balustrade bases?
Yes. We cut out the failed sealant and reseal the base joint using a sealant that suits the materials.
Do you come to St Marys?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
Can landlords and businesses book you?
Yes. Domestic, commercial and hotel work are all part of what we do.
Is a special sealant needed for glass?
Glass needs a sealant made for glazing. Ours is a neutral-cure glazing silicone and anti-fungal silicone in wet areas.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
The process
At the end, we look at the finished work together. The visit itself normally takes a few hours, depending on how many joints need doing, depending on the size of the job. Parking in city streets around St Marys can be tight or controlled, so it helps to know about permits or nearby bays. If you’re in a flat, let us know how we get in at the street door.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
How to prepare
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
- Mention any parking rules near the property
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply email us at info@mrmastic.co.uk and describe the job, and pictures are welcome.
Related advice
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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, then guaranteed for a year.
Work for landlords, hotels and businesses
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.