Greater London · England
Sidcup Glazing Silicone
Our applicators work in Sidcup on glazing silicone for conservatories, rooflights, glass panels and shower screens. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Sealant that was laid over old silicone and failed
- Leaks from the base of a shower screen
- Leaks where conservatory glass meets the frame
How we handle glazing silicone in Sidcup
Cracked, stained or lifting silicone on glass looks poor and can leak. It comes off cleanly, without marking the glass and reseal the joint. We are often asked to deal with sealant that was laid over old silicone and failed and stained, discoloured glazing silicone, across rooflights, glass-to-glass joints and shower screens.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Sidcup as anywhere.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Where
- Sidcup (DA14, DA15, SE9, DA5)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How it works
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes anything from an hour or two to most of a day, depending on the size of the job, depending on how much there is to do. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Sidcup. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, we trace the leak and check it’s coming through a sealant joint.
- We cut out the failed silicone, taking care of the glass and frame.
- We clean the joint with a solvent that suits the glass and frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We look over every joint and, where we can, test it with water.
How to prepare
- Mention any parking rules near the property
- Clear items away from the joints we are working on
- On commercial sites, let us know about site rules
Get a quote
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 send us an email.
Read more
Common problems we fix in Sidcup
Dirt and grease stop silicone sticking. Where the joint wasn’t cleaned and degreased the sealant may lift within a few years.
Signs it’s time to call us include:
- Failed joints on frameless glass
- Split or lifting silicone on glass
- Leaking glazing joints on a rooflight
- Stained, discoloured glazing silicone
Sidcup is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Comparing quotes
- How the colour is chosen
- Who turns up on the day
- Whether VAT is included
- How long to leave it before use
Nearby places to Sidcup
What else we do in Sidcup
How we quote for glazing silicone
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- Any mould that needs treating
- The number of rooms or windows
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, ring 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Where the property is
- Whether it has been sealed before
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Frames and glazing around Sidcup
With historic houses such as Danson House (about 1.7 miles north) nearby, there’s older building stock in the area around Sidcup 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. 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.
Schools such as Birkbeck Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Sidcup station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Sidcup is about 3 miles north of Orpington, in Greater London. Anywhere in DA14, we cover glazing silicone for homes and businesses. We cover 764 towns and villages across Greater London, large and small. There’s also a page for London, roughly 10 miles from Sidcup.
Jobs for glazing silicone in DA14, DA15, SE9 and DA5 is quoted and booked the same way as anywhere else. You will find streets such as Station Road, High Street and Jubilee Way, all of which we cover. With the A211 and A2001 close by, Sidcup is easy for our applicators to reach for glazing silicone. We also cover Albany Park (1 mile south), Blendon (1 mile north-east), Foots Cray (1 mile south-east), Bexley (2 miles north-east) and North Cray (2 miles east). Larger places within reach include London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Around Sidcup
Typical jobs here are in homes near The Alma pub, Waring Park and Chislehurst and Sidcup Grammar School, among other places. There’s a railway station in Sidcup itself: Sidcup station. Other landmarks nearby include Queen Mary's Hospital (1 mile south) and Broadway Shopping Centre (2.4 miles north-east). Open spaces near Sidcup include Summer Hill and The Tarn.
Sidcup questions
I let a flat near Sidcup station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Can you do glazing silicone in Sidcup?
Yes. We work across London and the South East, and Sidcup is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Do you guarantee glazing sealant work?
All our work has a one-year guarantee.
Which silicone is used for glass joints?
Glass needs a sealant made for glazing. We use neutral-cure glazing silicone and anti-fungal silicone in wet areas.
Can I choose the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before we start.
Why act early in Sidcup
If the problem is a misted unit or a broken panel, sealant will not help. We say so plainly and point you to a glazier or roofer. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
What you get with us
- We agree the colour with you first
- We leave the area clean and tidy
- Approved under the ARBOMaster scheme
- White, clear, grey or coloured to suit, where the product allows
Read how sealant jobs are priced or our reviews.
How to look after the new joints
Looking after new joints is easy:
- Keep air moving in the conservatory
- Do not leave a drip for the next storm
- Avoid scraping close to the bead
- Clear the conservatory gutters regularly
Avoid scraping near the new silicone when you clean. Stick to a soft cloth.
Conservatory leaks rarely stay small. Water travels along the frame and into the wall so it’s best dealt with right away.
How the job changes by surface
Shower screens
Black or peeling silicone on a screen lets water out. Cutting it out and resealing fixes it.
Glass-to-frame joints
Glass-to-frame joints need a sealant that bonds to both. We choose a product that suits both.