Hampshire · England
Glazing Silicone in Portchester
We cover Portchester for glazing silicone for conservatories, rooflights, glass panels and shower screens. Old sealant removed completely, joints prepared properly.
- New silicone smeared over old sealant
- Stained, discoloured glazing silicone
- Leaks where conservatory glass meets the frame
About our glazing silicone in Portchester
Conservatory leaks often start at a sealant joint, where glass meets frame or frame meets wall. We find the joint that’s letting water in and renew it and tell you plainly if the cause is something else. We work on rooflights, glass-to-glass joints and conservatory frames, and common reasons people get in touch are water running down inside the glass and sealant that was laid over old silicone and failed.
Many houses in smaller places like Portchester have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Location
- Portchester (PO16, PO6, PO17)
- Region
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Leave it or put it right?
If the problem is a misted unit or a broken panel, sealant will not help. We will tell you that rather than seal it anyway and point you to a glazier or roofer. Homes in smaller places like Portchester can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Portchester
- ARBOMaster approved applicator
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
Read what affects the cost and what customers say.
Nearby places to Portchester
Also in Portchester
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Honest limits
A few problems are outside what sealant work can do:
- Structural problems with a conservatory roof
- Leaks from the roof covering or flashing (a roofer’s job)
- A broken pane or roof panel
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Glass balustrade bases
- Glass-to-frame joints
- Rooflights
- Shower screens
- Glass-to-glass joints
- Conservatory frames
Quotes for glazing silicone in Portchester
Call for a quick quote. The main things that affect it are:
- The number and length of the joints
- Which sealant suits the joint
- The old material and how stubborn it is
- The number of rooms or windows
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- Roughly how big the job is
- Any access issues, like height or stairs
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Common questions in Portchester
Will you come out to Portchester?
Yes, Portchester is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Portchester station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We will tell you what we’re using and why.
Is it possible to redo the silicone on a shower screen?
Yes. We cut out the old silicone and reseal the glass-to-wall and glass-to-tray joints.
What guarantee do I get?
You get our one-year guarantee to every job we do.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Can a conservatory leak be sealed?
In many cases, as long as sealant is the cause. We find where the water gets in first before any sealing.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Portchester homes and the weather
Portchester 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Castle Primary School, its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Portchester station, a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. Homes close to Church of St Mary include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Portchester is about 3 miles north-east of Gosport, in Hampshire. If you need glazing silicone in Portchester, please call 0345 464 0079 or send us an email for a quick quote. We cover Hampshire from our Crawley base, Portchester included. We cover 683 towns and villages across Hampshire, from the larger towns to small villages.
We cover every part of PO16, PO6 and PO17 for glazing silicone and the streets around it. You will find streets such as Cow Lane, Hill Road and Ralph Road, and we cover them all. Other places close to Portchester include Boarhunt (2 miles north-west), Southwick (2 miles north), Elson (2 miles south-west), Wallington (2 miles west) and Priddy's Hard (2 miles south). Within a short drive, we also cover Gosport (3 miles south-west), Havant (6 miles east), Eastleigh (13 miles north-west), Fareham (3 miles west), Horndean (7 miles north-east) and Chandler's Ford (15 miles north-west).
What’s near Portchester
Around Portchester, our work takes us to homes and buildings near Portchester Community School and The Cormorant pub. The closest station to Portchester is Portchester station, about 0.5 miles north-west of the centre. Nearby you’ll also find Portchester Castle (under half a mile south-east) and Queen Alexandra Hospital (2.3 miles east). For a walk, there’s West of the River Alver and Portsdown Hill.
What the job involves on each surface
Rooflights
Rooflight leaks can come from the sealant or the roof. We find the cause first.
Glass-to-glass joints
These joints are on show, so a straight, even finish matters.
What happens on the day
All our tools and materials come with us in the van. Once we have agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for most jobs. A visit to Portchester 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 find where water is getting in and check whether it’s a sealant joint.
- We cut out the failed silicone, taking care of the glass and frame.
- We clean the joint with a solvent that suits the glass and frame.
- Glazing silicone suited to the joint is applied and tooled.
- We check the joints and, where safe, run water over them.
Preparing for the visit
- Clear items away from the joints we are working on
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
Get a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or email us.