West Berkshire · England
Glazing & conservatory sealant in Downend, West Berkshire
Glazing silicone for conservatories, rooflights, glass panels and shower screens for homeowners, landlords and businesses in Downend. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mouldy sealant around glass panels
- Leaks from the base of a shower screen
- Water getting into a conservatory at the joints
How the visit works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours for most jobs. Somewhere like Downend needs a little journey planning: 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 trace the leak and confirm it’s a sealant joint.
- We remove the old sealant carefully.
- We clean the glass and frame so the new silicone bonds.
- A neutral-cure glazing silicone is applied and tooled.
- We check the finished joints and test with water where it’s safe.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Tell us about any previous sealing or DIY attempts
How to get a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before we start.
Advice
About our glazing silicone in Downend
Not every silicone suits glass. We use a neutral-cure glazing silicone that is suited to glass and the frame, and we tool it to a neat, even finish. We’re often asked to deal with new silicone smeared over old sealant and shower screens leaking along the wall or tray, on glass-to-glass joints, glass balustrade bases and shower screens.
Outdoor sealant needs dry, clean surfaces, so work on frames around Downend is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Your job is guaranteed for a year, as with all our work.
- Location
- Downend (RG20)
- Region
- West Berkshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
After the cure time, these simple habits help:
- Get a new leak looked at quickly
- Use gentle products around the joints
- Ventilate the conservatory to cut condensation
- Check the silicone on glass every year or so
Use mild cleaners on and around the silicone. Harsh solvents may damage the bead.
Act on black or lifting silicone early. Once it starts to peel, water gets behind it and the problem grows.
FAQs for Downend
Is Downend in your area for glazing silicone?
Yes. We work across London and the South East, and Downend is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear quote.
Is there a guarantee on glazing silicone in Downend?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do you seal glass balustrade bases?
Yes, we reseal the joint at the base channel. Fitting glass is a separate trade.
Can you reseal a frameless shower screen?
Yes. We remove the old sealant and reseal the wall and tray joints.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Different surfaces, different methods
Glass balustrade bases
We reseal the joint where the glass meets the base channel. Glass fitting is a separate trade.
Conservatory frames
The joints where the conservatory meets the house take a lot of movement. They’re resealed with a suitable sealant.
Windows and doors in Downend
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. With historic houses such as Shaw House (about 4.2 miles south) nearby, there’s older building stock in the area around Downend as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you live in an older home near Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Managing a site like Chieveley Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Downend is about 5 miles north of Newbury, in West Berkshire. Our applicators cover glazing silicone for homes and businesses in Downend and nearby. Downend is one of 155 places in West Berkshire where we work for glazing silicone. You can also see our page for Reading, about 15 miles away.
All of RG20 is covered for glazing silicone. Whether your property is on Downend Lane, Bardown and Northfields or a nearby road, we can help. We also cover the places around Downend: Chieveley (1 mile south), North Heath (1 mile south-west), World's End (1 mile north-east), Peasemore (2 miles north-west) and Beedon (2 miles north). We also work in nearby towns such as Newbury (5 miles south), Thatcham (5 miles south-east), Burghfield Common (12 miles south-east), Speenhamland (5 miles south), Hungerford (10 miles south-west) and Calcot (12 miles east).
Near you in Downend
In Downend, that means homes and buildings near The Wheatsheaf pub, among other places. Well-known places in the area include Hampstead Norris Castle (3.3 miles east) and West Berkshire Community Hospital (4.7 miles south). Open spaces near Downend include Snelsmore Common.
Honest limits
We’d rather tell you now than do work that will not last, so these are the limits:
- A sagging or failing conservatory roof
- A broken pane or roof panel
- Misting between the panes of a double-glazed unit (a failed unit for a glazier)
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
What we seal
- Shower screens
- Glass balustrade bases
- Glass-to-glass joints
- Rooflights
- Glass-to-frame joints
- Conservatory frames
Towns and villages near Downend
Also in Downend
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
Leave it or put it right?
Replacing windows or a shower screen isn’t needed for a failed joint. If the glass and frame are sound, new silicone is often all it takes, and we’ll tell you if that’s not the case. In a small place like Downend, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Downend
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
See what affects the cost and what customers say.
What affects the cost of glazing silicone
For a quick quote, just ask. What matters most is:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- The number and length of the joints
- How much old sealant there is and how hard it is to remove
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
What we need to know
To make quoting easier, let us know:
- A few photos by email, if you can
- How we’d reach the joints
- Where the job is, and your postcode
- The type of property
If you’re in Downend and need glazing silicone, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.