Kent · England
Northfleet Glazing Silicone
Professional glazing silicone in and around Northfleet, with every bit of old sealant taken out first and a 12-month guarantee.
- Mouldy sealant around glass panels
- Split or lifting silicone on glass
- Water escaping where a screen meets the wall
Surface by surface
Conservatory frames
Leaks often start where the frame meets the wall. We cut out the old sealant and reseal.
Rooflights
A rooflight faces rain and sun from above. The sealant around the glass and frame wears faster than most.
About our glazing silicone in Northfleet
Glass and frames expand and contract differently, and the silicone between them takes the strain. When it cracks or lets go, water gets in. We replace it with a glazing silicone that suits the glass and frame. We work on conservatory frames, shower screens and glass balustrade bases, and the jobs we see most are water getting into a conservatory at the joints and sealant that was laid over old silicone and failed.
In a town like Northfleet, the windows on the most exposed side of a house take the brunt of the rain, so the mastic there tends to fail first. It’s worth looking at every frame, not just the one that leaks.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.
- Place
- Northfleet (DA11)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
Looking after new joints is easy:
- Clear the conservatory gutters regularly
- Use a gentle glass cleaner and a soft cloth
- Get a new leak looked at quickly
- Ventilate the conservatory to cut condensation
Clear the conservatory gutters regularly so water does not back up against the seals. Blocked gutters can push water where it shouldn’t go.
Damp patches, drips and condensation along a joint are worth checking. It may be sealant, or something else and we’ll find out which.
For landlords and businesses
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured.
We work for letting agents and landlords as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
What happens on the day
The work is kept neat and contained to the joints we are treating. Expect the work to take a few hours for most jobs, and we tell you how long to leave it before we go. A visit in Northfleet needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- First, we check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- 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.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or email us.
Advice
Signs you need glazing silicone in Northfleet
The wrong sealant is a common cause. Not every silicone sticks properly to glass and vinegar-smelling acetoxy silicone can attack some metals.
Look out for any of the following:
- Leaks from the base of a shower screen
- Water running down inside the glass
- A quick top-up bead that didn’t last
- Conservatory leaks at frame and glazing joints
If you live in an older home near Church of All Saints, the joint between an old wall and a newer frame is generally the first place rain gets in.
Comparing quotes
- Whether you can choose the colour
- Whether VAT is included
- When the joint can take water or movement
- Whether they’re fully insured
Nearby places to Northfleet
More services for Northfleet
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Northfleet homes and the weather
Northfleet is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on glazing joints and frame seals, especially on the side facing the sea. With historic houses such as Cobham College (about 3.7 miles south-east) nearby, there’s older building stock in the area around Northfleet as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Northfleet Technology College? Then the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Gravesend station, a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
Northfleet is about 5 miles east of Dartford, in Kent. Whether you are in the middle of Northfleet or further out, we cover glazing silicone for every kind of property. Northfleet is one of 922 towns and villages in Kent we cover. There’s also a page for London, roughly 20 miles from Northfleet.
We work across DA11 for glazing silicone and the streets around it. If you need glazing silicone at a property on Lawrance Square, London Road and Marks Square or a nearby road, we can help. Being close to the A2 and A226, Northfleet is simple for us to get to for glazing silicone. Other places close to Northfleet include Painters Ash (1 mile south-west), Springhead (1 mile west), Windmill Hill (1 mile east), Northfleet Green (1 mile south) and Gravesend (1 mile east). Within a short drive, we also cover Maidstone (14 miles south-east), Dartford (5 miles west), Sevenoaks (13 miles south-west), Swanley (8 miles west), Kings Hill (11 miles south) and Foley Park (13 miles south-east).
Local landmarks in Northfleet
We work in homes and buildings around The Six Bells pub, Saint George's Church of England School and Copperfield Academy. The nearest railway station is Gravesend station, about 1 mile north-east of the centre. Nearby you’ll also find Bluewater (3.3 miles west) and Stone Castle (3.1 miles west). The countryside around Northfleet includes Chafford Gorges Nature Park and Sawyers Lake.
Why deal with it now?
Topping up old silicone can look like a fix, but silicone does not stick to silicone and water soon finds its way back. A proper reseal is the lasting answer. Around Northfleet, failed sealant lets water into hidden places, like the floor under a bath, the back of a panel or the inside of a wall. Left alone, that means rot, damp and a bigger repair.
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 we start.
Why book with us
- Homes, businesses and hotels
- We are fully insured
- Rated 4.9 stars on Google
- Neat joints and a tidy finish
Take a look at how sealant jobs are priced or what customers say.
Northfleet questions
Is glazing silicone in a coastal place like Northfleet any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
I let a flat near Gravesend station. Can you help?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Why not top up the existing silicone?
It doesn’t last. The new bead cannot grip the old one, so we remove the old sealant and clean the joint.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
Can you replace a misted double-glazed unit?
We don’t replace glass. We reseal the joints around it, and we’ll tell you if a unit looks like it has failed.
Can you reseal a frameless shower screen?
Yes. We remove the old silicone carefully, and the joints are cleaned and resealed.