Greater London · England
Glazing & conservatory sealant in Upper Norwood, Greater London
Glazing silicone across Upper Norwood and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Shower screens leaking along the wall or tray
- Drips on the inside of a conservatory window
- Glass-to-glass joints that have split
What sealant work cannot fix
To be straight with you, there are a few things sealant will not fix:
- Structural problems with a conservatory roof
- Failed flashing around a conservatory
- A frame that needs repairing or replacing
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Glass-to-glass joints
- Conservatory frames
- Shower screens
- Glass-to-frame joints
- Rooflights
- Glass balustrade bases
Glazing silicone for homes and businesses in Upper Norwood
Conservatory leaks often start at a sealant joint, where glass meets frame or frame meets wall. We trace the leak to the joint and reseal it, and if it’s something sealant can’t fix, we will tell you. If you have failed sealant around rooflight glass and water running down inside the glass, we can help, whatever the surface.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Upper Norwood.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Upper Norwood (SE19, SE27, SE21)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. Once we have agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for most jobs. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- 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.
- The joints are checked before we leave.
Before we arrive
- Mention any tricky access
- Clear items away from the joints we are working on
- Mention any parking rules near the property
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Read more
What the job involves on each surface
Glass balustrade bases
Outdoor balustrade joints face the weather. Renewing the sealant keeps water out of the channel.
Conservatory frames
Exposed frame joints wear with the weather. Renewed sealant keeps water out.
Upper Norwood: your questions answered
I let a flat near Gipsy Hill station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Is parking a problem for a job in Upper Norwood?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Is a special sealant needed for glass?
We pick a glazing silicone to suit the materials. Neutral-cure products suit most glass and frames.
Can I choose the sealant colour?
Most of the time, yes. We will tell you which colours the right product comes in.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
How do I get a quote for glazing silicone in Upper Norwood?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
What information do you need?
Let us know what needs doing and where. If we need more, we will ask.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Glazing silicone in Upper Norwood: local notes
With historic houses such as Kingswood House (about 0.8 miles north) nearby, there’s older building stock in the area around Upper Norwood as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking.
In the older streets around Christ Church, the joint between an old wall and a newer frame is normally the first place rain gets in. Rented homes near Gipsy Hill station change hands often, and leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. Upper Norwood is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Upper Norwood is about 4 miles south-east of Stockwell, in Greater London. Homes, rented property, offices and hotels in Upper Norwood can book us for glazing silicone. The work is guaranteed for a year. 764 places in Greater London are on our list. Our London page covers work nearby.
Work in SE19, SE27 and SE21 works the same way as everywhere else we cover. Local streets include Dover Road, Hawke Road and Tudor Road. Main roads around Upper Norwood include the A214, so getting to you is simple. Other places close to Upper Norwood include Norwood New Town (1 mile west), Gipsy Hill (1 mile north-east), West Norwood (1 mile north-west), Crystal Palace (1 mile east) and Anerley (1 mile east). We also work in nearby towns such as London (6 miles north), City of Westminster (7 miles north-west), Marylebone (7 miles north), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Local landmarks in Upper Norwood
In Upper Norwood, that means homes and buildings near The Sparrowhawk pub, Long Meadow and Rockmount Primary School, among other places. There’s a railway station in Upper Norwood itself: Gipsy Hill station. Other landmarks nearby include St Christopher's Hospice (1.3 miles east) and Crystal Palace Museum (0.5 miles east). Not far away are Dulwich Upper Wood and Knight's Hill.
Why it’s worth doing now in Upper Norwood
Replacing windows or a shower screen isn’t needed for a failed joint. If the glass and frame are sound, new silicone is often all it takes, and we’ll tell you if that is not the case. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Upper Norwood, the repair is bigger than a sealant job.
Combining jobs into one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Why choose Mr Mastic in Upper Norwood
- We leave the area clean and tidy
- An ARBOMaster approved applicator
- Arbo and Everbuild products
- 180+ five-star Google reviews
Places near Upper Norwood
Other services in Upper Norwood
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Landlords, agents and businesses in Upper Norwood
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Inspect the sealant on glazing annually
- Keep air moving in the conservatory
- Do not use a blade near the sealant
- Squeegee the shower screen after each use
Look over the glazing joints every year or so. Catching a split early keeps the repair small.
A leaking shower screen may not show at first. It can damage the floor or the ceiling below before you spot it.