Hampshire · England
Northbrook Glazing Silicone
Professional glazing silicone in and around Northbrook, with old sealant always removed completely and a 12-month guarantee.
- Leaking glazing joints on a rooflight
- Split or lifting silicone on glass
- Shower screens leaking along the wall or tray
Glazing silicone for homes and businesses in Northbrook
Not every silicone suits glass. Our applicators use neutral-cure glazing silicone, which suits glass and most frame materials, finished with a neat, even bead. We work on rooflights, glass-to-glass joints and shower screens, and the jobs we see most are glass-to-glass joints that have split and black or yellowed silicone on glass joints.
Around Northbrook, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Where
- Northbrook (SO21)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Northbrook
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Micheldever CofE Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Micheldever station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Northbrook is about 7 miles north of Winchester, in Hampshire. For glazing silicone in and around Northbrook, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Hampshire from our Crawley base. 683 places in Hampshire are on our list, from the larger towns to small villages. For nearby work, see our Southampton page (17 miles or so).
Work in SO21 is quoted and booked the same way as anywhere else. Neighbouring places we cover for glazing silicone include Micheldever (1 mile south-east), Stoke Charity (1 mile west), Hunton (2 miles west), Micheldever Station (2 miles north) and East Stratton (2 miles east). We also work in nearby towns such as Basingstoke (11 miles north-east), Winchester (7 miles south), Eastleigh (13 miles south), Andover (10 miles north-west), Chandler's Ford (13 miles south-west) and Alton (13 miles east).
What’s near Northbrook
Around Northbrook, our work takes us to homes and buildings near Half Moon and Spread Eagle pub, among other places. The closest station to Northbrook is Micheldever station, roughly 2.1 miles north.
Leave it or put it right?
Glazing joints need a sealant made for the job. A general-purpose tube may not bond well or may react with the frame so we choose a glazing silicone instead. Around Northbrook, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and send you a clear quote before work begins.
What you get with us
- Colour picked to suit the job
- We’re fully insured
- Colour agreed with you before any work starts
- Rated 4.9 stars on Google
Take a look at what affects the cost or what customers say.
What affects the cost of glazing silicone
We quote each job individually. These are the things that affect it:
- How many rooms, windows or areas are involved
- Whether the work is at height
- Working hours on commercial sites
- The type of sealant required
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Helping us quote
To make quoting easier, please include:
- How we’d reach the joints
- The address or postcode of the job
- A few pictures by email, if you can
- Whether it’s a home or a business
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Towns and villages near Northbrook
Also in Northbrook
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid strong solvents on or near the sealant
- Run a squeegee over the glass when you are done
- Open vents or windows to let moisture out
- Keep scrapers and blades away from the silicone
Follow the cure time we give you before the joints get wet so the silicone can set properly. After that, clean glass with a mild cleaner.
Don’t leave lifting or mouldy silicone on glazing. Once it starts to peel, water gets behind it and the problem grows.
What happens on the day
On the day, we look over the joints with you first. We protect the surfaces around the joints before work begins. Most jobs take a few hours, depending on how many joints need doing. Somewhere as small as Northbrook, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the glazing and agree which joints need resealing.
- Old sealant is removed from the glass and frame.
- We clean and prepare the joint.
- We apply and tool the new silicone.
- The joints are checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Want a quote for glazing silicone? Please ring 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear price before work begins.
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Northbrook: your questions answered
Will you come out to Northbrook?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is Northbrook in your area for glazing silicone?
Yes, Northbrook is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
Do you work for letting agents?
Yes, often. Several properties can be quoted together, and between tenancies is a good time for the work.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- A sealed unit that has misted inside
- Frames that have decayed or split
- A broken pane or roof panel
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Rooflights
- Conservatory frames
- Glass balustrade bases
- Glass-to-frame joints
- Glass-to-glass joints
- Shower screens
How the job changes by surface
Shower screens
Mouldy or lifting sealant on a screen leaks. Cutting it out and resealing fixes it.
Conservatory frames
Frame joints face sun and rain all year. Renewed sealant keeps water out.
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
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.