West Sussex · England
Crawley Down Glazing Silicone
Glazing silicone for Crawley Down, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Glass-to-glass joints that have split
- Silicone pulling away from the glass
- Rooflight joints letting water in
Different surfaces, different methods
Glass balustrade bases
Glass balustrades sit in a channel that’s often finished with sealant. When it fails, water can sit in the channel.
Conservatory frames
Leaks often start where the frame meets the wall. We cut out the old sealant and reseal.
How we handle glazing silicone in Crawley Down
Glazing silicone is a maintenance item. Sun, rain and movement wear it down and cracked joints let water in. Renewing it keeps glazing joints doing their job. We work on shower screens, glass-to-glass joints and conservatory frames, and the jobs we see most are glazing silicone that has cracked or come away and sealant that was laid over old silicone and failed.
In smaller places like Crawley Down, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
Big or small, you get the same 12-month guarantee.
- Location
- Crawley Down (RH10)
- Wider area
- West Sussex
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Crawley Down
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Saint Hill Manor (about 2.4 miles south-east) nearby, there’s older building stock in the area around Crawley Down as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For an older house near a landmark such as All Saints Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Crawley Down is about 3 miles west of East Grinstead, in West Sussex. We provide glazing silicone to homeowners, landlords and businesses in Crawley Down. Crawley Down is one of 371 places in West Sussex we cover for glazing silicone.
Work in RH10 works the same way as everywhere else we cover. You will find streets such as Station Road, Forest Close and Burleigh Way, all of which we cover. Other places close to Crawley Down include Furnace Wood (1 mile north), Snow Hill (1 mile north), Turners Hill (1 mile south), Domewood (1 mile north) and Felbridge (2 miles north-east). We also work in nearby towns such as Crawley (5 miles west), Horsham (11 miles west), Haywards Heath (9 miles south), Burgess Hill (12 miles south), East Grinstead (3 miles east) and Broadfield (6 miles west).
Near you in Crawley Down
In Crawley Down, that means homes and buildings near Imberhorne School and the streets around them. For rail, the closest station is East Grinstead station, roughly 2.5 miles east of the centre. Other landmarks nearby include Queen Victoria Hospital (3.5 miles east) and Effingham Park Motor Museum (1.4 miles north-west). The countryside around Crawley Down includes Hedgecourt Lake.
Honest limits
We’ll always be straight with you, so here’s what sealant can’t fix:
- Water coming through the roof rather than a sealant joint
- Condensation trapped between two panes
- A roof that has moved or dropped
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Shower screens
- Glass-to-frame joints
- Conservatory frames
- Rooflights
- Glass-to-glass joints
- Glass balustrade bases
What affects the cost of glazing silicone
The price is agreed before any work begins. It’s based on:
- Whether the work is at height
- The size of the job
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
What we need to know
When you contact us, it’s useful to know:
- Whether it’s a home or a business
- How we’d reach the joints
- Any previous sealing or DIY work
- Photos by email, if that is easy
We quote each job on its own, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details, and photos are welcome.
Towns and villages near Crawley Down
Also in Crawley Down
Signs you need glazing silicone in Crawley Down
New silicone over old silicone will not bond. Many failed joints we see have been topped up rather than cut out leaving a path for water.
Signs it’s time to call us include:
- Water tracking down the inner face of the glass
- Water escaping where a screen meets the wall
- Rooflight joints letting water in
- Mouldy sealant around glass panels
Letting a property close to East Grinstead station? Then glazing joints are worth checking at the end of a tenancy, before a small leak grows.
What to look for in a quote
- What insurance they hold
- Is VAT in the price?
- What guarantee comes with the work
- How hidden problems are handled
Why act early in Crawley Down
You do not need new glazing because the sealant has gone. Sound glass and frames generally just need resealing, and we will tell you if that’s not the case. Around Crawley Down, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why us?
- Any old sealant cut out fully, not covered over
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- We agree the colour with you first
Take a look at our cost guide or our reviews.
What happens on the day
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from an hour or two to most of a day, depending on the size of the job. Parking around Crawley Down is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First, we check where the water gets in.
- 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.
- Each joint is checked and, where possible, water-tested.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
- Keep pets and children clear of the area while we work
How to get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Read more
Questions from Crawley Down
Can you do glazing silicone in Crawley Down?
Yes, Crawley Down is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Do you work for landlords with property near East Grinstead station?
Yes. We work for letting agents and landlords as well as householders. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Can you replace a misted double-glazed unit?
We do not replace glass. We look after the sealant joints, and we will tell you if a unit looks like it has failed.
How long does glazing silicone take?
As a guide, most jobs take a few hours, depending on how many joints need doing. Bigger jobs take longer, and we’ll say how long yours will take.
Do you offer different sealant colours?
We help you choose a colour that suits, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Run a squeegee over the glass when you are done
- Keep air moving in the conservatory
- Don’t use a blade near the sealant
- Clean glass with a mild cleaner and a soft cloth
Look over the glazing joints every year or so. Spotting a crack early means a simpler fix.
Conservatory leaks rarely stay small. Water runs along frames and down walls so it’s best dealt with right away.