Portsmouth · England
Glazing & conservatory sealant in Kingston, Portsmouth
Our applicators work in Kingston on glazing silicone for conservatories, rooflights, glass panels and shower screens. Old sealant removed completely, joints prepared properly.
- Stained, discoloured glazing silicone
- Water running down inside the glass
- Failed joints on frameless glass
Glazing silicone for homes and businesses in Kingston
Glazing silicone is a maintenance item. Weather and movement take their toll, and once it cracks, water follows. Renewing it keeps glazing joints doing their job. Typical jobs include cracked silicone between glass panels and leaks from the base of a shower screen, on glass balustrade bases, rooflights and glass-to-frame joints.
In a smaller place like Kingston, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
A one-year guarantee comes as standard.
- Where
- Kingston (PO1, PO3, PO4)
- Region
- Portsmouth
- Guarantee
- A year, on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Glazing silicone in Kingston: local notes
Kingston 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 glazing joints and frame seals, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Fratton station change hands often, and leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. If you look after a building such as Miltoncross Academy, its window and door frames need their mastic kept sound, just like a home’s.
Kingston is about 1 mile south-east of Portsmouth, in Portsmouth. Anywhere in PO1, we can carry out glazing silicone at your property. Our Portsmouth coverage runs to 19 places, and Kingston is one of them.
Jobs for glazing silicone in PO1, PO3 and PO4 is quoted and booked the same way as anywhere else. We cover properties on Renny Road, Clive Road and Union Road. Kingston is on the A288, so it’s easy for us to get to. Nearby, we also carry out glazing silicone in Fratton (1 mile south-west), Baffins (1 mile north-east), Copnor (1 mile north), Portsmouth (1 mile north-west) and Landport (1 mile west). Further out, we also cover Wymering (3 miles north), Paulsgrove (3 miles north), Cosham (3 miles north), Drayton (3 miles north) and Farlington (3 miles north-east).
What’s near Kingston
In Kingston, that means homes and buildings near Langstone Infant School, Graham Arms and Alexandra Park, among other places. The nearest railway station is Fratton station, about 0.5 miles south-west of the centre. A little further out are Charles Dickens Birthplace Museum (1 mile west) and St Mary's Hospital (within half a mile south-east). Green spaces nearby include Milton Locks and Portsdown Hill.
How the visit works
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours, depending on how many joints need doing. A visit to Kingston is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We trace the leak and confirm it’s a sealant joint.
- We remove the old sealant carefully.
- The joint is cleaned and degreased.
- A neutral-cure glazing silicone is applied and tooled.
- We check the finished joints and test with water where it’s safe.
Before we arrive
- Move anything stored near the joints
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and send you a clear quote.
Related advice
Keeping the joints in good condition
So the new joints stay in good condition:
- Keep air moving in the conservatory
- Check the silicone on glass every year or so
- Squeegee the shower screen after each use
- Use a gentle glass cleaner and a soft cloth
Keep conservatory gutters clear so water doesn’t back up against the seals. Overflowing gutters can cause leaks of their own.
Cracked glazing silicone means the joint has failed. Renewing it early keeps it simple, compared with repairing damaged frames or plaster.
Leave it or put it right?
Topping up old silicone can look like a fix, but silicone doesn’t stick to silicone, and the leak usually returns. Cutting out and resealing properly lasts. In an older home around Kingston, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Kingston
- You choose the colour before work begins
- More than 20 years in sealant work
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at how sealant jobs are priced and customer reviews.
FAQs for Kingston
Does the coastal weather in Kingston affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you help a landlord with a rental near Fratton station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Are you insured?
Yes, we are fully insured for domestic and commercial work.
How long should I leave it?
Cure times vary by product. We tell you how long to leave it before we go.
Do you work in Kingston?
Yes. We work in Kingston and the rest of Portsmouth, as part of our work across South East England, London and Scotland. To book, phone 0345 464 0079 or send us an email.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
When it is not the sealant
It helps to know what we can’t do:
- Structural problems with a conservatory roof
- Glass that needs replacing
- Condensation trapped between two panes
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Rooflights
- Conservatory frames
- Glass balustrade bases
- Shower screens
- Glass-to-glass joints
- Glass-to-frame joints
More services for Kingston
What we are called out for in Kingston
New silicone over old silicone won’t bond. Many failed joints we see have been topped up rather than cut out, and water gets between the layers.
People generally contact us when they notice something like this:
- Split or lifting silicone on glass
- Leaking glazing joints on a rooflight
- Sealant that was laid over old silicone and failed
- Glass-to-glass joints that have split
If you live in an older home near Church of St Cuthbert, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- How much experience the applicator has
- How the colour is chosen
- What happens if they find a problem under the old sealant
- Whether all the old sealant comes out first
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.