Greater London · England

Coulsdon Glazing Silicone

Glazing silicone for conservatories, rooflights, glass panels and shower screens for homeowners, landlords and businesses in Coulsdon. Fully insured, ARBOMaster approved and guaranteed for a year.

  • Shower screens leaking along the wall or tray
  • Conservatory leaks at frame and glazing joints
  • Sealant that was laid over old silicone and failed

Glazing silicone near Coulsdon

For landlords and businesses

If you manage several properties in or around Coulsdon, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.

Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.

Glazing silicone in Coulsdon

Not every silicone suits glass. We use a neutral-cure glazing silicone that’s suited to glass and the frame, finished with a neat, even bead. If you’re dealing with split or lifting silicone on glass and new silicone smeared over old sealant, we can put it right, on glass-to-glass joints, shower screens and rooflights alike.

Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in, in Coulsdon as anywhere.

Every job comes with a 12-month guarantee, wherever you are in Greater London.

Where
Coulsdon (CR5, CR8, CR3)
Region
Greater London
Cover
12 months on all our work
Quotes
A clear quote up front
Phone
0345 464 0079
Page updated
26 October 2026
Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house

FAQs for Coulsdon

Is parking a problem for a job in Coulsdon?

Parking in Coulsdon, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.

Can you help a landlord with a rental near Coulsdon South station?

Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.

Do you take out the old sealant first?

Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.

Can you match the sealant colour?

In most cases you can choose. We will explain which colours are available and agree one before we start.

Do you fit new glass or sealed units?

No, our work is the silicone. A glazier replaces glass and units.

Why not top up the existing silicone?

Many leaks we see come from exactly that. A proper job means cutting out, cleaning and resealing.

How long should I leave it?

Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint.

What should I tell you?

Where the job is, what the problem is and roughly how big it is. Photos by email help too.

Leave it or put it right?

Dealing with a leaking shower screen early protects the floor and ceiling. Water from a failed joint can soak into the floor before you notice. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Coulsdon, the repair is bigger than the sealant job would have been.

A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.

Why book with us

  • A choice of colours where the product allows
  • We’re fully insured
  • More than 20 years in sealant work
  • We never seal over old sealant

See how sealant jobs are priced or customer reviews.

What we can’t put right

New sealant can’t fix everything, and we will tell you before any work starts. It won’t solve:

  • Water coming through the roof rather than a sealant joint
  • A sagging or failing conservatory roof
  • Condensation trapped between two panes

Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.

What we seal

  • Rooflights
  • Glass-to-frame joints
  • Shower screens
  • Glass balustrade bases
  • Conservatory frames
  • Glass-to-glass joints

How it works

There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes a few hours, depending on how many joints need doing in most cases. In a London area like Coulsdon, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.

  1. We trace the leak and confirm it’s a sealant joint.
  2. We remove the old sealant carefully.
  3. The joint is cleaned and degreased.
  4. A neutral-cure glazing silicone is applied and tooled.
  5. We check the finished joints and test with water where it’s safe.

Getting ready for the visit

  • Mention any leaks or damp you’ve noticed
  • Tell us if parking is tricky
  • Keep children and pets away from the work area

How to get a quote

There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.

Ask for a quote

Advice

Frames and glazing around Coulsdon

In a converted house or block, who looks after the windows depends on the lease, so check that before you book. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.

If you live in an older home near St Andrew's Church, the joint between an old wall and a newer frame is normally the first place rain gets in. As a London address, Coulsdon can be tricky for parking: let us know about parking bays, permits or a driveway. Rented homes near Coulsdon South station change hands often, and a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.

Coulsdon is about 13 miles south of London, in Greater London. From the centre of Coulsdon to the outskirts, we cover glazing silicone for every kind of property. 764 places in Greater London are on our list, large and small. There’s also a page for London, about 13 miles away.

Here we cover the CR5, CR8 and CR3 postcode area for glazing silicone. You will find streets such as Hadleigh Grove, Farthing Way and Dobson Close, and we cover them all. Main roads around Coulsdon include the B276 and B2030. If you’re just outside Coulsdon, we cover Woodcote (1 mile north), Old Coulsdon (1 mile south-east), Woodmansterne (1 mile west), Chipstead (1 mile south-west) and Purley (2 miles north-east). Further out, we also cover London (13 miles north), City of Westminster (14 miles north), Marylebone (14 miles north), Kensington (13 miles north), St Pancras (15 miles north) and Shoreditch (15 miles north).

Landmarks near Coulsdon

Locally, jobs take us to homes and businesses close to Dollypers Hill, Coulsdon Sixth Form College and The Pembroke pub, among other places. There’s a railway station in Coulsdon itself: Coulsdon South station. Well-known places in the area include Croydon Airport Visitor Centre (3 miles north) and Purley War Memorial Hospital (2 miles north-east). Not far away are Duppas Hill and Mercers Lake.

Map of Coulsdon © OpenStreetMap contributors

What affects the quote in Coulsdon

Every job gets its own quote. This is what makes a difference:

  • The number and length of the joints
  • When we can work, for business premises
  • Mould in or behind the old joints
  • How many areas need sealing

Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.

What we need to know

To make quoting easier, let us know:

  • Access, such as stairs, a lift or height
  • Photos by email, if that is easy
  • Where the job is, and your postcode
  • The type of property

For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.

Aftercare tips

No joint lasts for ever, but care makes a real difference. A few tips:

  • Do not use a blade near the sealant
  • Clean glass with a mild cleaner and a soft cloth
  • Wipe the screen down after showering
  • Look over the glazing joints once a year

Avoid scraping near the new silicone when cleaning the glass. Stick to a soft cloth.

Conservatory leaks rarely stay small. Water runs along frames and down walls, so get it looked at when you first see it.

Should I try it myself first?

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.

Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job