Essex · England
Glazing & conservatory sealant in High Ongar, Essex
Glazing silicone for conservatories, rooflights, glass panels and shower screens for High Ongar, backed by a one-year guarantee. Ask us for a quote.
- Failed joints on frameless glass
- Failed sealant around rooflight glass
- Sealant that was laid over old silicone and failed
High Ongar questions
Is High Ongar in your area for glazing silicone?
Yes. We work across London and the South East, and High Ongar is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Will you come out to High Ongar?
Yes, we do. 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 letting agents?
Yes. We work in homes, commercial premises and hotels, and we’re fully insured.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is it possible to redo the silicone on a shower screen?
Yes. We remove the old silicone carefully before cleaning and resealing.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Can a conservatory leak be sealed?
In many cases, as long as sealant is the cause. We find where the water gets in first, so you know what you’re paying for.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Glazing silicone in High Ongar
We renew glazing silicone on conservatories, rooflights and glass panels plus shower screens and the bases of glass balustrades. Each joint is cut out, cleaned and resealed. We are often asked to deal with water tracking down the inner face of the glass and shower screens leaking along the wall or tray, on glass balustrade bases, glass-to-frame joints and conservatory frames.
In a village or hamlet like High Ongar, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
We stand behind the work with a one-year guarantee.
- Where
- High Ongar (CM5)
- Region
- Essex
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Glass-to-frame joints
We cut the old silicone from the glass without scratching it before new glazing silicone goes in.
Shower screens
Mouldy or lifting sealant on a screen leaks. A full reseal sorts it.
Landlords, agents and businesses in High Ongar
We also work for property managers and facilities teams in High Ongar and across Essex. Several sites can go on one quote, and we’re fully insured.
For anyone letting property in or around High Ongar, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Why deal with it now?
Leaks get worse, not better. Water can damage frames, walls, flooring and furniture so early action saves a bigger repair. Around High Ongar, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in High Ongar
- Full insurance on every job
- 4.9 on Google from 180+ five-star reviews
- Homes, businesses and hotels
- White, clear, grey or coloured to suit, where the product allows
See what affects the cost and customer reviews.
How it works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours for most jobs. Somewhere like High Ongar needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we trace the leak and check it’s coming through a sealant joint.
- Old silicone is cut away from the glass and frame without scratching either.
- 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.
How to prepare
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
- Mention if the joints have been sealed before
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or email us.
Read more
How we quote for glazing silicone
Your quote is based on your job. We take into account:
- Whether there’s mould to deal with
- The type of sealant required
- The size of the job
- Whether old sealant or filler has to be cut out
What you pay reflects the work, not guesswork. That is why we ask about the job first and agree the price before starting.
Asking for a quote
To help us quote quickly, let us know:
- Any previous sealing or DIY work
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
- The type of property
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.
DIY sealant or a professional job?
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.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Windows and doors in High Ongar
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Mary the Virgin, the joint between an old wall and a newer frame is normally the first place rain gets in.
High Ongar is about 6 miles north of Brentwood, in Essex. From the centre of High Ongar to the outskirts, glazing silicone is available for homes and businesses alike. 644 places in Essex are on our list. Chelmsford is on our list too, about 10 miles from High Ongar.
Here we cover the CM5 postcode area for glazing silicone. Local streets include The Street, Mill Lane and Millfield, all of which we cover. If you are just outside High Ongar, we cover Chipping Ongar (1 mile west), Shelley (1 mile north-west), Norton Mandeville (1 mile north-east), King Street (1 mile east) and Greensted (2 miles west). Within a short drive, we also cover Chelmsford (10 miles east), Basildon (12 miles south-east), Harlow (8 miles north-west), Brentwood (6 miles south), Billericay (9 miles south-east) and Loughton (9 miles south-west).
Landmarks near High Ongar
Locally, jobs take us to homes and businesses close to Red Lion Public House and The Ongar Academy, among other places. Well-known places in the area include Willingale Doe (3.7 miles north-east).
When to call us in High Ongar
Glass and frames expand and contract with the temperature at different rates. In time, the sealant splits or pulls away.
Most people get in touch after spotting something like this:
- Water running down inside the glass
- Failed sealant around rooflight glass
- A quick top-up bead that didn’t last
- Silicone pulling away from the glass
If you look after a building such as High Ongar Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Before booking anyone
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
- What guarantee comes with the work
- How the joint is cleaned and prepared