Hampshire · England
Glazing & conservatory sealant in Gosport, Hampshire
Glazing silicone for conservatories, rooflights, glass panels and shower screens for Gosport, backed by a one-year guarantee. Call for a quick quote.
- Sealant that was laid over old silicone and failed
- Leaking glazing joints on a rooflight
- Failed joints on frameless glass
Common questions in Gosport
Can you do glazing silicone in Gosport?
Yes, Gosport is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Can you help a landlord with a rental near Chandlers Ford station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
Can you fix a leaking conservatory?
That depends where the water is getting in. Sealant joints we can renew but roof and panel problems need another trade.
What guarantee do I get?
Every job comes with our one-year guarantee.
Do you replace glass?
No. A misted unit has failed inside, and a glazier needs to replace it.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Can you just put new silicone over the old?
A top-up rarely holds. Fresh silicone will not bond to cured silicone, so we remove the old sealant and clean the joint.
About our glazing silicone in Gosport
Glass and frames expand and contract differently, 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. If you’re dealing with leaks from the base of a shower screen and glass-to-glass joints that have split, we can help, on glass-to-frame joints, glass-to-glass joints and rooflights alike.
Homes in small places like Gosport often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.
- Location
- Gosport (SO51)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Keep air moving in the conservatory
- Do not use a blade near the sealant
- Act on drips or damp patches early
- Check the silicone on glass every year or so
Check the joints once a year. Spotting a crack early means a simpler fix, before water gets in.
Cracked glazing silicone means the joint has failed. Resealing now is a small job, compared with repairing damaged frames or plaster.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- A sagging or failing conservatory roof
- Failed flashing around a conservatory
- Rotten or badly damaged frames
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Glass-to-glass joints
- Conservatory frames
- Shower screens
- Rooflights
- Glass balustrade bases
- Glass-to-frame joints
Windows and doors in Gosport
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around Church of St Mark, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Chandlers Ford station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. Managing a site like Ampfield Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Gosport is about 2 miles east of Romsey, in Hampshire. From the centre of Gosport to the outskirts, glazing silicone is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 683 places across Hampshire, from the larger towns to small villages. Our Southampton page covers work nearby, about 6 miles away.
Here we cover the SO51 postcode area for glazing silicone. If you are just outside Gosport, we cover Ampfield (1 mile north-east), Crampmoor (1 mile west), Knapp (1 mile north-east), Broadgate (1 mile east) and Lower Slackstead (2 miles north). We also work in nearby towns such as Winchester (6 miles north-east), Eastleigh (5 miles south-east), Fareham (15 miles south-east), Andover (14 miles north), Totton (7 miles south-west) and Hedge End (8 miles south-east).
Around Gosport
We work in homes and buildings around White Horse Public House and The Mountbatten School. For rail, the closest station is Chandlers Ford station, roughly 2.6 miles south-east. Other landmarks nearby include King Johns House (2.9 miles west) and Romsey Community Hospital (2.2 miles west). The countryside around Gosport includes Emer Bog and Baddesley Common.
What affects the cost of glazing silicone
The quote reflects the job in front of us. We take into account:
- Whether there’s mould to deal with
- Whether the work is at height
- The old material and how stubborn it is
- Working hours on commercial sites
The cost reflects the work involved, not guesswork. That is why we ask about the job first and agree the price before starting.
What we need to know
When you call or email, these details help:
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
- Where the property is
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Landlords, agents and businesses in Gosport
If you manage several properties in or around Gosport, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Also near Gosport
What else we do in Gosport
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
How it works
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before we start. Most jobs take anything from an hour or two to most of a day, depending on the size of the job. For a village or hamlet like Gosport, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- 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.
How to prepare
- Mention any tricky access
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
How to get 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.
Related advice
Why deal with it now?
Fixing a leaking screen early protects what’s underneath. A small leak can reach the floor below before you notice. In a small place like Gosport, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, 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 choose Mr Mastic in Gosport
- Fully insured
- A sealant colour to suit the surroundings
- ARBOMaster approved applicator
- Colour agreed with you before work begins
Take a look at how sealant jobs are priced or our reviews.