West Sussex · England
Southwater Glazing Silicone
Glazing silicone for conservatories, rooflights, glass panels and shower screens for Southwater, backed by a one-year guarantee. Ask us for a quote.
- Split or lifting silicone on glass
- Water getting into a conservatory at the joints
- Cracked silicone between glass panels
Glazing silicone for homes and businesses in Southwater
Conservatory leaks often start at a sealant joint, where glass meets frame or frame meets wall. We find the joint that is letting water in and renew it and tell you plainly if the cause is something else. Typical jobs include drips on the inside of a conservatory window and new silicone smeared over old sealant, on shower screens, glass-to-glass joints and glass-to-frame joints.
In a smaller place like Southwater, some walls face open ground and catch the full force of the weather. That’s hard on the mastic around frames and sills.
Big or small, you get the same 12-month guarantee.
- Where
- Southwater (RH13)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Glass-to-frame joints
Glass-to-frame joints need a sealant that bonds to both. We choose a product that suits both.
Conservatory frames
The joints where the conservatory meets the house take a lot of movement. They’re resealed with a suitable sealant.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
FAQs for Southwater
I let a flat near Christs Hospital station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Do you cover Southwater for glazing silicone?
Yes. We work across London and the South East, and Southwater is part of that. You can call 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
Do you seal glass balustrade bases?
Yes. The sealant joint at the base can be renewed. Fitting glass is a separate trade.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we’re done.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Frames and glazing around Southwater
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Christs Hospital station, a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. In the older streets around Holy Innocents Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Southwater is about 3 miles south of Horsham, in West Sussex. For glazing silicone in and around Southwater, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover West Sussex, Southwater included. Southwater is one of 371 towns and villages in West Sussex where we work for glazing silicone. You can also see our page for Crawley, about 9 miles away.
We cover every part of the RH13 postcode area for glazing silicone. Streets in the area include Station Road, Walmer Close and Pevensey Road, all of which we cover. Other places close to Southwater include Tower Hill (2 miles north), Nuthurst (2 miles east), Brooks Green (2 miles west), Barns Green (2 miles west) and Maplehurst (2 miles south-east). Further out, we also cover Crawley (9 miles north-east), Horsham (3 miles north), Worthing (14 miles south), Haywards Heath (11 miles east), Burgess Hill (11 miles south-east) and Shoreham-by-Sea (13 miles south).
Around Southwater
Typical jobs here are in homes near The Lintot pub and The Doyle School of Design and Technology, among other places. Southwater’s nearest station is Christs Hospital station, about 1.9 miles north-west of the centre. A little further out are Christs Hospital School Museum (1.5 miles north-west) and Horsham Hospital (3.2 miles north). Not far away are Knepp Wildland.
Towns and villages near Southwater
More services for Southwater
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What we’re called out for in Southwater
UV light ages silicone, especially on conservatory roofs. Old silicone hardens, cracks and loses its grip on the glass.
The most common problems we see are:
- New silicone smeared over old sealant
- Stained, discoloured glazing silicone
- Water running down inside the glass
- Failed joints on frameless glass
If you look after a building such as Southwater Infant Academy, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Is VAT in the price?
- Who turns up on the day
- How the joint is cleaned and prepared
- The length of the guarantee
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Use a gentle glass cleaner and a soft cloth
- Check the silicone on glass every year or so
- Open vents or windows to let moisture out
- Avoid strong solvents on or near the sealant
Avoid scraping near the new silicone when cleaning the glass. A soft cloth or sponge is best.
Damp patches, drips and condensation along a joint are worth checking. The cause may be sealant or another part and we’ll find out which.
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- A frame that needs repairing or replacing
- Condensation trapped between two panes
- A sagging or failing conservatory roof
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
What we seal
- Rooflights
- Conservatory frames
- Glass-to-glass joints
- Shower screens
- Glass-to-frame joints
- Glass balustrade bases
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take anything from an hour or two to most of a day, depending on the size of the job. Parking around Southwater is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First we agree the joints to be done.
- We cut away the failed silicone.
- The surfaces are cleaned with a suitable solvent.
- We apply and tool the new silicone.
- We inspect the work and test it where we can.
Preparing for the visit
- Keep children and pets away from the work area
- Mention any tricky access
- Move anything stored near the joints
Getting a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.