Oxfordshire · England
Glazing & conservatory sealant in Highmoor Cross, Oxfordshire
Problem with your glazing joints in Highmoor Cross? We remove the old material, prepare the joints and seal them properly.
- Leaking glazing joints on a rooflight
- Silicone pulling away from the glass
- Leaks where conservatory glass meets the frame
Glazing silicone in Highmoor Cross, done properly
We work across Highmoor Cross on glazing joints for homes and businesses. From conservatories to shower screens, it’s the same careful method. We’re often asked to deal with shower screens leaking along the wall or tray and cracked silicone between glass panels, on shower screens, rooflights and conservatory frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Highmoor Cross is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
All our work comes with a 12-month guarantee.
- Where
- Highmoor Cross (RG9)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take anything from an hour or two to most of a day, depending on the size of the job. In a small place like Highmoor Cross, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
Get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
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Places near Highmoor Cross
Other services in Highmoor Cross
What affects the cost of glazing silicone
We don’t publish a price list, because jobs vary so much. What we look at:
- Whether the work is at height
- How much there is to do
- The old material and how stubborn it is
- Mould in or behind the old joints
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Any previous sealing or DIY work
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- The type of property
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
What the job involves on each surface
Conservatory frames
Exposed frame joints wear with the weather. Renewed sealant keeps water out.
Glass-to-frame joints
Where glass sits in a frame, silicone keeps water out. When it splits, water can get into the frame.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Leave it or put it right?
Silicone around glazing needs the right product. A general-purpose tube may not bond well or may react with the frame so we choose a glazing silicone instead. In a small place like Highmoor Cross, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Highmoor Cross
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
- Full insurance on every job
- Homes, businesses and hotels
FAQs for Highmoor Cross
Can you do glazing silicone in Highmoor Cross?
Yes, Highmoor Cross is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
I let a flat near Henley-On-Thames station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Which silicone is used for glass joints?
We use a neutral-cure glazing silicone suited to glass and the frame. Shower screens get anti-fungal silicone.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
How long does glazing silicone take?
Typically it takes anything from an hour or two to most of a day, depending on the size of the job. Bigger jobs take longer.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep scrapers and blades away from the silicone
- Avoid strong solvents on or near the sealant
- Act on drips or damp patches early
- Run a squeegee over the glass when you are done
Keep conservatory gutters clear so water doesn’t back up against the seals. Blocked gutters can push water where it shouldn’t go.
Don’t leave lifting or mouldy silicone on glazing. Peeling silicone lets water in behind and the problem grows.
Signs you need glazing silicone in Highmoor Cross
Using a sealant not made for glass causes many failures. Some products don’t bond well to glass and vinegar-smelling acetoxy silicone can attack some metals.
Look out for any of the following:
- Mouldy sealant around glass panels
- Leaks where conservatory glass meets the frame
- Failed sealant around rooflight glass
- Failed joints on frameless glass
Letting a property close to Henley-On-Thames station? Then glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Questions to ask before you book
- How long to leave it before use
- Whether the sealant suits the joint
- How hidden problems are handled
- How the colour is chosen
Glazing silicone in Highmoor Cross: local notes
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. Historic houses like Greys Court (about 1.6 miles east) are a reminder that the area around Highmoor Cross has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to Church of St Paul include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Highmoor Cross is about 5 miles north of Caversham, in Oxfordshire. Across the RG9 area, we cover glazing silicone for homes and businesses. Our Oxfordshire coverage runs to 443 places, Highmoor Cross among them. For nearby work, see our Reading page (7 miles or so).
Postcode districts we cover here for glazing silicone: RG9. Whether your property is on Holly Close and The Glebe or a nearby road, we can help. Close by, we work in Highmoor (1 mile north-west), Shepherd's Green (1 mile south-east), Kingwood Common (1 mile south), Catslip (1 mile north) and Nettlebed (2 miles north). Larger places within reach include Didcot (12 miles west), Abingdon-on-Thames (15 miles north-west), Thame (13 miles north), Henley-on-Thames (4 miles east), Benson (7 miles north-west) and Chinnor (11 miles north).
Local landmarks in Highmoor Cross
In Highmoor Cross, that means homes and buildings near The Dog and Duck pub, among other places. The nearest railway station is Henley-On-Thames station, about 4.1 miles east. The countryside around Highmoor Cross includes Warburg Nature Reserve.