Greater London · England
Window Mastic in West Norwood
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in West Norwood. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the sill meets the wall
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Keep drainage slots and sill grooves clear
- Ventilate rooms so frames don’t stay wet inside
- Walk round the house once a year and look at the joints
- Don’t aim a pressure washer at the joints
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. A new joint closes it up.
Window mastic for homes and businesses in West Norwood
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. Common call-outs are for cracked sealant at the sill ends and white mastic on grey or black frames, across aluminium frames, timber windows & doors and uPVC windows.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in West Norwood.
All our work comes with a 12-month guarantee.
- Place
- West Norwood (SE19, SE27, SE21)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Penetrating damp from a failed cavity tray or render
- Condensation trapped between the panes
- Draughts through the window seals rather than the frame
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before you book.
Where we work in West Norwood
- Aluminium frames
- Composite doors
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Window sills
Leave it or put it right?
Redecorating is a good moment to renew the mastic. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. 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 West Norwood, the repair is bigger than the sealant job would have been.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
What you get with us
- Trusted Arbo and Everbuild sealants
- Anti-fungal silicone where joints get wet
- We leave the area clean and tidy
- White, clear, grey or another colour, product permitting
See what affects the cost and our reviews.
How the job changes by surface
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. We pay most attention there.
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
For landlords and businesses
For anyone letting property in or around West Norwood, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
How the visit works
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes anything from an hour or two to a full day, depending on how many frames there are for a typical job. For a job in West Norwood, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First we look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
How to prepare
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
- Let us know about parking restrictions
Get a quote
For a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Read more
Towns and villages near West Norwood
Other services in West Norwood
Do you need window mastic in West Norwood?
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
It’s worth asking for a quote if you see:
- A bead that doesn’t match the frame
- Gaps where the sill meets the wall
- Black, perished sealant on frames
- Draughty joints inside around the window
For an older house near a landmark such as West Norwood Congregational Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Before you book anyone
- What product goes in the joint
- How much experience the applicator has
- Whether they’re fully insured
- Whether all the old sealant comes out first
West Norwood: your questions answered
Is parking an issue for window mastic in West Norwood?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can you help a landlord with a rental near West Norwood station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Can I paint over the new sealant?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Can you do upstairs windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote so we can plan the job.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll explain our choice.
Where are you based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Window mastic in West Norwood: local notes
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. 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.
As a London address, West Norwood can be tricky for parking: let us know about parking bays, permits or a driveway. Letting a property close to West Norwood station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
West Norwood is about 5 miles south of London, in Greater London. Anywhere in SE19, we can carry out window mastic at your property. 764 places in Greater London are on our list, from the larger towns to small villages.
Work in SE19, SE27 and SE21 works the same way as everywhere else we cover. We cover properties on Crown Lane, Dover Road and Moore Road and the roads around them. You’ll find West Norwood on the A214 and A215, which makes it straightforward to reach. Neighbouring places we cover for window mastic include Norwood New Town (1 mile south), Gipsy Hill (1 mile south-east), Upper Norwood (1 mile south-east), West Dulwich (1 mile north-east) and Crystal Palace (1 mile south-east). We also work in nearby towns such as London (5 miles north), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Local landmarks in West Norwood
Locally, jobs take us to homes and businesses close to Long Meadow, Norwood School and Hillcrest and the streets around them. The closest station to West Norwood is West Norwood station, roughly 0.5 miles north-west. Nearby you’ll also find Centrale Croydon (3.5 miles south) and St Christopher's Hospice (1.6 miles east). Not far away are Dulwich Upper Wood and Battersea Park Lake.