Greater London · England
Window Mastic in West Wickham
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in West Wickham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked internal joints between frame and plaster
- Cold air getting in at the frame edge
- Gaps left after new windows were fitted
Why act early in West Wickham
A quick bead over the top of old mastic looks like an easy fix, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in West Wickham, the repair is bigger than the sealant job would have been.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why choose Mr Mastic in West Wickham
- ARBOMaster approved applicator
- 4.9 on Google from 180+ five-star reviews
- Over 20 years’ experience
- Sanitary silicone with an anti-fungal additive in wet areas
Read what affects the cost and what customers say.
How we handle window mastic in West Wickham
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before we start. To get one, call 0345 464 0079 or send us an email with the number of frames and any access details for window mastic in West Wickham. Common call-outs are for mastic that has split away from the wall and sealant in the wrong colour for the frame, across composite doors, aluminium frames and window sills.
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, letting in draughts and water.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Where
- West Wickham (BR4, CR0, BR3)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
A few problems are outside what sealant work can do:
- Soft or decayed wood in the frame
- Broken hinges, locks or handles
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Window sills
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Composite doors
- Aluminium frames
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- How easy the joints are to reach
- Which sealant suits the joint
The cost depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it’s a home or a business
- If someone has resealed it before
- The address or postcode of the job
- How we’d reach the joints
Want a quote for window mastic? Please call 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear quote before any work starts.
Landlords, agents and businesses in West Wickham
Landlords and agents in West Wickham can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
For anyone letting property in or around West Wickham, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Different surfaces, different methods
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
FAQs for West Wickham
Is West Wickham in your area for window mastic?
Yes. Our work covers London and the South East, and West Wickham is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Can parking be tricky for a visit in West Wickham?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we’ll tell you.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
How do I get a quote for window mastic in West Wickham?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email and let us know what needs doing and where.
Do the sealants smell?
Some sealants have a smell while they cure. Ventilation helps.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or email us.
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes most of a day for a typical house, less for a few frames. For a job in West Wickham, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Before we arrive
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
Ask for a quote
We don’t publish a price list. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Related advice
Also near West Wickham
Other services in West Wickham
Aftercare tips
After the cure time, these simple habits help:
- Keep solvents and bleach off the sealant
- Use gentle cleaners on frames and sealant
- Do not aim a pressure washer at the joints
- Don’t paint over the silicone
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
West Wickham homes and the weather
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. With historic houses such as Addington Palace (about 1.6 miles south-west) nearby, there’s older building stock in the area around West Wickham 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.
Rented homes near West Wickham station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Schools such as Oak Lodge Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as St Francis of Assisi, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
West Wickham is about 2 miles south of Beckenham, in Greater London. West Wickham gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. West Wickham is one of 764 places in Greater London we cover for window mastic. We also work in London, around 9 miles away.
We cover every part of the BR4, CR0 and BR3 postcode area for window mastic and the streets around it. You will find streets such as Ash Road, Kent Road and Oak Avenue, and we cover them all. We also cover the places around West Wickham: Coney Hall (1 mile south), Spring Park (1 mile west), Eden Park (1 mile north), Hayes (1 mile east) and Addington (1 mile south). Within a short drive, we also cover London (9 miles north), City of Westminster (11 miles north-west), Marylebone (11 miles north-west), Kensington (12 miles north-west), St Pancras (11 miles north) and Shoreditch (11 miles north).
What’s near West Wickham
In West Wickham, that means homes and buildings near Millers Pond, Langley Park School for Girls and The Wheatsheaf pub. There’s a railway station in West Wickham itself: West Wickham station. Nearby you will also find The Mall (2.4 miles north-east) and National Psychosis Unit (0.6 miles north-west). Open spaces near West Wickham include Duppas Hill and Bramley Bank.