Isle of Wight · England
Glazing & conservatory sealant in Downend, Isle of Wight
Glazing silicone for conservatories, rooflights, glass panels and shower screens for householders, landlords and businesses in Downend. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Rooflight joints letting water in
- Water getting into a conservatory at the joints
- Split or lifting silicone on glass
Landlord and commercial work in Downend
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Glazing silicone in Downend
We renew glazing silicone on conservatories, rooflights and glass panels, as well as frameless shower screens and glass balustrade bases. The old sealant comes out, the joint is cleaned and new silicone goes in. We work on conservatory frames, glass-to-frame joints and glass-to-glass joints, and the jobs we see most are water running down inside the glass and stained, discoloured glazing silicone.
Around Downend, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Downend (PO30)
- Region
- Isle of Wight
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Other services in Downend
Your questions about glazing silicone in Downend
Is Downend in your area for glazing silicone?
Yes. Our work covers London and the South East, and Downend is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
I let a flat near Smallbrook Junction station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Can you reseal a frameless shower screen?
Yes, it’s a common job. The screen is resealed with anti-fungal silicone made for wet areas.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Is the work guaranteed?
Our one-year guarantee covers every job.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Glazing silicone in Downend: local notes
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. Historic houses like Arreton Manor (about 0.8 miles south) are a reminder that the area around Downend has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near St. George's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Smallbrook Junction station change hands often, and a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
Downend is about 2 miles east of Newport, in the Isle of Wight. Downend gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our the Isle of Wight coverage runs to 125 places, and Downend is one of them. There’s also a page for Portsmouth, about 11 miles away.
All of PO30 is within our area for glazing silicone. Glazing silicone is available to properties on Briddlesford Road and Long Lane. We also cover the places around Downend: Arreton (1 mile south), Merstone (2 miles south), Blackwater (2 miles south-west), Shide (2 miles west) and Newchurch (2 miles south-east). Larger places within reach include Ryde (4 miles north-east), Cowes (5 miles north-west), Sandown (4 miles south-east), Shanklin (5 miles south-east), Ventnor (7 miles south) and East Cowes (5 miles north). If you’re somewhere remote, the job takes a little more planning.
What’s near Downend
We work in homes and buildings around The White Lion pub and the streets around them. For rail, the closest station is Smallbrook Junction station, roughly 4.3 miles east. A little further out are Carisbrooke Castle (3 miles west) and Whitecroft Hospital (2.7 miles south-west). Open spaces near Downend include Brading Down and Briddlesford Nature Reserve.
Different surfaces, different methods
Shower screens
Silicone holds the water in on frameless screens. We reseal without scratching the glass.
Glass balustrade bases
The base of a glass balustrade is generally sealed. Failed sealant there lets water collect.
What we’re called out for in Downend
Sealant laid over old sealant does not last. Many failed joints we see have been topped up rather than cut out leaving a path for water.
If you can see any of these, it’s time to have the joints looked at:
- Glass-to-glass joints that have split
- Leaks where conservatory glass meets the frame
- Black or yellowed silicone on glass joints
- Drips on the inside of a conservatory window
If you look after a building such as Medina College, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- Is VAT in the price?
- When the joint can take water or movement
- Whether they’re fully insured
- The length of the guarantee
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours for most jobs from start to finish. For a village or hamlet like Downend, 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.
- We start by finding the leak and making sure sealant is the cause.
- The old sealant is removed from the glass and frame without scratching them.
- We clean the joint with a solvent that suits the glass and frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We check the joints and, where safe, run water over them.
Before we arrive
- Move anything stored near the joints
- Mention if the joints have been sealed before
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
Looking after it afterwards
After the cure time, these simple habits help:
- Open vents or windows to let moisture out
- Keep scrapers and blades away from the silicone
- Use a gentle glass cleaner and a soft cloth
- Check the gutters above the glazing for debris
Gentle products are best near the sealant. Strong solvents can soften or mark it.
A small conservatory leak soon spreads. Water travels along the frame and into the wall, so get it looked at when you first see it.
How we quote for glazing silicone
We don’t publish a price list, because jobs vary so much. What we look at:
- Mould in or behind the old joints
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- The number and length of the joints
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- Roughly how big the job is
- Whether it’s a home or a business
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
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.