Greater London · England
Glazing & conservatory sealant in South Hornchurch, Greater London
Professional glazing silicone in and around South Hornchurch, with old sealant always removed completely and a 12-month guarantee.
- Drips on the inside of a conservatory window
- A quick top-up bead that didn’t last
- Black or yellowed silicone on glass joints
Glazing silicone in South Hornchurch
Across South Hornchurch, we reseal glazing joints in homes, offices and hotels. Conservatories, rooflights, glass panels and shower screens are all part of the job. Typical jobs include stained, discoloured glazing silicone and leaking glazing joints on a rooflight, on rooflights, shower screens and glass-to-frame joints.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first, and access in South Hornchurch is something to talk through when you book.
Each job carries a 12-month guarantee, whatever its size.
- Where
- South Hornchurch (RM13, RM10, RM12)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
Replacing windows or a shower screen is not needed for a failed joint. If the glass and frame are sound, new silicone is often all it takes. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in South Hornchurch, the repair is bigger than a sealant job.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why choose Mr Mastic in South Hornchurch
- Fully insured
- Homes, businesses and hotels
- We leave the area clean and tidy
- 12-month guarantee on every job
Also near South Hornchurch
Also in South Hornchurch
Different surfaces, different methods
Glass-to-glass joints
Where two panes meet, the silicone joint takes all the movement. It must be clean, neat and well bonded.
Glass balustrade bases
Outdoor balustrade joints face the weather. Renewing the sealant keeps water out of the channel.
Questions from South Hornchurch
Is parking a problem for a job in South Hornchurch?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you do glazing silicone in South Hornchurch?
Yes. We work across London and the South East, and South Hornchurch is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Do you guarantee glazing sealant work?
You get our 12-month guarantee to every job we do.
How long will you be here?
Typically it takes a few hours for most jobs. Bigger jobs take longer.
Can you replace a misted double-glazed unit?
We don’t replace glass. We reseal the joints around it, and we will tell you if a unit looks like it has failed.
Which silicone is used for glass joints?
We pick a glazing silicone to suit the materials. Neutral-cure products suit most glass and frames.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Check the silicone on glass every year or so
- Keep conservatory gutters clear of leaves
- Open vents or windows to let moisture out
- Wipe the screen down after showering
Do not use blades or scrapers near the bead when you clean. Stick to a soft cloth.
Do not leave lifting or mouldy silicone on glazing. Peeling silicone lets water in behind and the leak gets worse.
Do you need glazing silicone in South Hornchurch?
Sealant laid over old sealant does not last. Plenty of leaks come from a quick top-up over the old bead leaving a path for water.
Common reasons people contact us include:
- Sealant that was laid over old silicone and failed
- Water getting into a conservatory at the joints
- Water tracking down the inner face of the glass
- Stained, discoloured glazing silicone
As a London address, South Hornchurch can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- How much experience the applicator has
- How the colour is chosen
- Are they insured?
- What happens if they find a problem under the old sealant
Landlords, agents and businesses in South Hornchurch
Housing providers, facilities teams and property managers book us too in South Hornchurch and across Greater London. We can quote a run of properties together, and we are fully insured for the work.
If you manage several properties in or around South Hornchurch, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
How the visit works
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. Most jobs take a few hours for most jobs. In South Hornchurch, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- The surfaces are cleaned with a suitable solvent.
- New glazing silicone goes in and is finished neatly.
- We inspect the work and test it where we can.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
For glazing silicone in South Hornchurch, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
South Hornchurch homes and the weather
Historic houses like Rainham Hall (about 0.9 miles south) are a reminder that the area around South Hornchurch has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so check that before booking.
Letting a property close to Rainham (Essex) station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. Schools such as Whybridge Junior School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
South Hornchurch is about 3 miles south of Romford, in Greater London. Jobs in South Hornchurch get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 764 places across Greater London. For nearby work, see our London page (12 miles or so).
Every address in RM13, RM10 and RM12 is within our area for glazing silicone, from the main roads to the quietest streets. You’ll find streets such as Hood Road, Ford Lane and Philip Road, all of which we cover. Neighbouring places we cover for glazing silicone include Beam Park (1 mile south-west), Rainham (1 mile south-east), Hornchurch Marshes (1 mile south-west), Dagenham (1 mile north-west) and Elm Park (1 mile north-east). Larger places within reach include London (12 miles west), City of Westminster (15 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (11 miles west) and Walthamstow (10 miles north-west).
What’s near South Hornchurch
We work in homes and buildings around The Bell pub, The Brittons Academy and Beam Valley Country Park. South Hornchurch’s nearest station is Rainham (Essex) station, about 0.9 miles south. Well-known places in the area include St George's Hospital (1.9 miles north-east) and The Brewery (3.1 miles north). Not far away are Ingrebourne Marshes.
Can I do it myself?
If you do try it yourself, take your time over the 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.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.