Kent · England
Glazing & conservatory sealant in Knockholt, Kent
Glazing joints in Knockholt need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Drips on the inside of a conservatory window
- Failed sealant around rooflight glass
- Stained, discoloured glazing silicone
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Cracked or broken glass
- Frames that have decayed or split
- Misting between the panes of a double-glazed unit (a failed unit for a glazier)
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Rooflights
- Shower screens
- Conservatory frames
- Glass-to-frame joints
- Glass balustrade bases
- Glass-to-glass joints
How we handle glazing silicone in Knockholt
A frameless shower screen depends on its silicone. Leaks generally come from the wall joint or the tray joint and both get fresh anti-fungal silicone. We’re often asked to deal with conservatory leaks at frame and glazing joints and water running down inside the glass, across rooflights, glass balustrade bases and glass-to-frame joints.
In a village or hamlet like Knockholt, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Each job carries a 12-month guarantee.
- Where
- Knockholt (TN14)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why act early in Knockholt
Leaks get worse, not better. Water can damage frames, walls, flooring and furniture, so it pays to deal with it early. Around Knockholt, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask about the job first and send you a clear quote before work begins.
What you get with us
- 180+ five-star Google reviews
- White, clear, grey or coloured to suit, where the product allows
- ARBOMaster approved applicator
- One-year guarantee on every job
See our cost guide or what customers say.
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 anything from an hour or two to most of a day, depending on the size of the job. Somewhere as small as Knockholt, 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.
- We cut away the failed silicone.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- We inspect the work and test it where we can.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
- Mention if the joints have been sealed before
Getting a quote
For glazing silicone in Knockholt, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
How we quote for glazing silicone
Your quote is based on your job. We take into account:
- Access and height
- How much old sealant there is and how hard it is to remove
- How much there is to do
- The number of rooms or windows
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Whether it has been sealed before
- A few pictures by email, if you can
- The rough size of the job
- If it’s domestic, commercial or a hotel
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or email us.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Look over the glazing joints once a year
- Keep harsh solvents off the silicone
- Clean glass with a mild cleaner and a soft cloth
- Keep air moving in the conservatory
Avoid scraping near the new silicone when cleaning the glass. A soft cloth or sponge is best.
If silicone on glass has cracked, water is already getting in. Resealing now is a small job compared with fixing water damage later.
Towns and villages near Knockholt
Other services in Knockholt
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
How the job changes by surface
Conservatory frames
Frame-to-wall joints on a conservatory move with the weather. We reseal them with a sealant suited to the frame.
Glass balustrade bases
Outdoor balustrade joints face the weather. A sound sealant joint keeps them tidy and dry.
Knockholt homes and the weather
The South East is one of 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 Down House (about 2.7 miles north-west) nearby, there’s older building stock in the area around Knockholt as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around St Katharine's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Knockholt station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Knockholt is about 4 miles north-west of Sevenoaks, in Kent. Whether you are in the middle of Knockholt or further out, glazing silicone is available for homes and businesses alike. We cover 922 towns and villages across Kent. For nearby work, see our London page (16 miles or so).
Every address in TN14 is covered for glazing silicone. That includes homes and businesses on Main Road and Blueberry Lane and the roads around them. If you’re just outside Knockholt, we cover Knockholt Pound (1 mile north-east), Halstead (2 miles north-east), Sepham Heath (2 miles north-east), Pratt's Bottom (2 miles north) and Twitton (3 miles east). Within a short drive, we also cover Dartford (11 miles north-east), Sevenoaks (4 miles south-east), Royal Tunbridge Wells (14 miles south-east), Gravesend (14 miles north-east), Tonbridge (11 miles south-east) and Northfleet (13 miles north-east).
Landmarks near Knockholt
Around Knockholt, our work takes us to homes and buildings near The Three Horseshoes pub and the streets around them. Knockholt’s nearest station is Knockholt station, about 2.7 miles north-east of the centre. Nearby you’ll also find Orpington Hospital (3.6 miles north) and Otford Heritage Centre (3.9 miles east). Open spaces near Knockholt include Betsom's Hill and Downe Bank.
Knockholt: your questions answered
Do you cover smaller places like Knockholt?
Yes. Knockholt is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do glazing silicone in Knockholt?
Yes, Knockholt is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Can you match the sealant colour?
Usually, yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
What guarantee do I get?
Our one-year guarantee covers every job, glazing sealant included.
I rent my home. Can I book you?
We’re happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint before we leave.
Do you reseal glass shower screens?
Yes, we do these often. We use anti-fungal silicone made for wet areas.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.