West Sussex · England
Glazing Silicone in Portfield
Specialist glazing silicone for Portfield: careful preparation, the right product and tidy work. Call for a quick quote.
- Stained, discoloured glazing silicone
- Sealant that was laid over old silicone and failed
- Split or lifting silicone on glass
About our glazing silicone in Portfield
Across Portfield, we reseal glazing joints in homes, offices and hotels. Conservatories, rooflights, glass panels and shower screens are all part of the job, with a sealant chosen for the joint. If you have drips on the inside of a conservatory window and split or lifting silicone on glass, we can put it right, on rooflights, conservatory frames and glass balustrade bases alike.
In a smaller place like Portfield, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
Whatever the size of the job, it’s backed by our 12-month guarantee in Portfield and across West Sussex.
- Location
- Portfield (PO19, PO20, PO18)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
If the problem is a misted unit or a broken panel, sealant won’t help. We say so plainly, so you can call the right trade. Around Portfield, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why choose Mr Mastic in Portfield
- A 12-month guarantee on all work
- We leave the area clean and tidy
- 20+ years of sealant experience
- Quality sealants from Arbo and Everbuild
Read how sealant jobs are priced and customer reviews.
How it works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for most jobs for a typical job. For a job in Portfield, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- We inspect the work and test it where we can.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
Getting a quote
To get a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Advice
How to look after the new joints
After the cure time, these simple habits help:
- Use a gentle glass cleaner and a soft cloth
- Wipe the screen down after showering
- Use gentle products around the joints
- Clear the conservatory gutters regularly
Keep conservatory gutters clear, so water drains away from the joints. Blocked gutters can push water where it shouldn’t go.
Conservatory leaks rarely stay small. Water travels along the frame and into the wall, so get it looked at when you first see it.
Different surfaces, different methods
Glass balustrade bases
We reseal the joint where the glass meets the base channel. Glass fitting is a separate trade.
Conservatory frames
Leaks often start where the frame meets the wall. We cut out the old sealant and reseal.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Rotten or badly damaged frames
- A broken pane or roof panel
- Failed flashing around a conservatory
If in doubt, ring 0345 464 0079 or email us and we will say what we think before booking.
What we seal
- Glass-to-glass joints
- Glass balustrade bases
- Conservatory frames
- Shower screens
- Rooflights
- Glass-to-frame joints
What glazing silicone looks like in Portfield
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Goodwood House (about 2.5 miles north) are a reminder that the area around Portfield has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Homes close to St George's include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in. For site and facilities teams at buildings such as Portfield Primary Academy, its window and door frames need their mastic kept sound, just like a home’s.
Portfield is about 1 mile east of Chichester, in West Sussex. We provide glazing silicone to householders, landlords and businesses in Portfield and nearby. Our West Sussex coverage runs to 371 places, Portfield among them. Our Portsmouth page covers work nearby (14 miles or so).
Jobs for glazing silicone in PO19, PO20 and PO18 works the same way as everywhere else we cover. That includes homes and businesses on Kent Road, York Road and Spur Road and the roads around them. You’ll find Portfield on the A259 and A285, which makes it straightforward to reach with everything needed for glazing silicone. If you are just outside Portfield, we cover Chichester (1 mile west), Westhampnett (1 mile north-east), Shopwyke (1 mile east), Maudlin (1 mile north-east) and North Mundham (2 miles south). Further out, we also cover Bognor Regis (5 miles south-east), Selsey (7 miles south), Littlehampton (10 miles east), Emsworth (8 miles west), Rustington (11 miles east) and Storrington (15 miles north-east).
Around Portfield
We work in homes and buildings around The Prebendal School, The East Gate Public House and Chichester High School For Girls and the streets around them. For rail, the closest station is Chichester station, roughly 0.9 miles west. A little further out are The Chichester City Museum (0.6 miles west) and Chichester Castle (0.6 miles west). Not far away are Kingley Vale National Nature Reserve and Stoke Down.
Your questions about glazing silicone in Portfield
Do you work for landlords with property near Chichester station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Do you cover smaller places like Portfield?
Yes. Portfield is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
What does glazing silicone cost?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or email us and tell us what needs doing and where.
Which silicone is used for glass joints?
We pick a glazing silicone to suit the materials. Neutral-cure silicone is the usual choice.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Why not top up the existing silicone?
It doesn’t last. Fresh silicone will not bond to cured silicone, so we remove the old sealant and clean the joint.
What affects the cost of glazing silicone
The price is agreed before any work begins. It takes into account:
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- The size of the job
- Whether the work is at height
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
What we need to know
Photos by email are helpful but not essential. Please mention:
- The rough size of the job
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or drop us an email.
When to call us in Portfield
Heat and cold make glass and frames move at different rates. Over years, that movement tears the silicone.
The most common problems we see are:
- Stained, discoloured glazing silicone
- Silicone pulling away from the glass
- Leaks where conservatory glass meets the frame
- Leaks from the base of a shower screen
Rented homes near Chichester station change hands often, and a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
Comparing quotes
- How long the guarantee is
- What the cure time is
- Whether they’re fully insured
- How the surfaces are prepared before sealing