Greater London · England
Bushey Mead Sand Mastic
Window and door surrounds in Bushey Mead need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic in Bushey Mead
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on stone surrounds, sash and case windows and brick reveals, and common reasons people get in touch are mastic worn away on windows facing the weather and draughty sash windows at the surround.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
Every job is covered by our one-year guarantee.
- Place
- Bushey Mead (SW20, SW19, SM4)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the amount of work. For a job in Bushey Mead, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.
Read more
Leave it or put it right?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why book with us
- Arbo and Everbuild products
- A 12-month guarantee on all work
- ARBOMaster approved applicator
- Over 20 years’ experience
Read our cost guide or customer reviews.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Get any rot dealt with first
- Do not run silicone over sand mastic
- Make sure water runs off the sill
- Ask us before painting near the mastic
Leave the new mastic unpainted, as traditional guidance advises. Ask us before any decorating around it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Bushey Mead homes and the weather
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking. Historic houses like Southside House (about 0.7 miles north-west) are a reminder that the area around Bushey Mead has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Managing a site like Joseph Hood Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Dundonald Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Bushey Mead is about 1 mile south-west of Wimbledon, in Greater London. For sand mastic in and around Bushey Mead, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Greater London, Bushey Mead included. We cover 764 towns and villages across Greater London, from the larger towns to small villages. You can also see our page for London, about 8 miles away.
Every address in SW20, SW19 and SM4 is within our area for sand mastic. Local streets include Gore Road, Edna Road and Wyke Road, all of which we cover. Being close to the A298, Bushey Mead is easy for our applicators to reach for sand mastic. We also cover Wimbledon Chase (1 mile east), Raynes Park (1 mile south-west), Cannon Hill (1 mile south-east), Copse Hill (1 mile north-west) and West Barnes (1 mile south-west). We also work in nearby towns such as London (8 miles north-east), City of Westminster (8 miles north), Marylebone (8 miles north-east), Kensington (6 miles north), St Pancras (9 miles north-east) and Shoreditch (10 miles north-east).
What’s near Bushey Mead
In Bushey Mead, that means homes and buildings near Harris Academy Wimbledon, The Edward Rayne pub and Ursuline Preparatory School and the streets around them. Bushey Mead has its own railway station: Raynes Park station. Nearby you’ll also find Atkinson Morley Hospital (0.9 miles north-west) and Chessington Castle Hill (4.6 miles south-west). Green spaces nearby include Cherry Wood and Henman Hill.
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- How much old sealant there is and how hard it is to remove
- The size of the job
- The type of sealant required
- Any working-time requirements on site
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
What to tell us for a quote
To make quoting easier, let us know:
- Where the job is, and your postcode
- The rough size of the job
- Any previous sealing or DIY work
- The problem you’ve noticed
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Towns and villages near Bushey Mead
More services for Bushey Mead
Bushey Mead questions
Do you work for landlords with property near Raynes Park station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is parking a problem for a job in Bushey Mead?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
How long does sand mastic take to go off?
It forms a skin fairly soon and it hardens fully over a longer time. The weather and joint depth both affect it.
Should I use sand mastic or silicone?
We will help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Is it OK to seal over old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Surface by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
When it isn’t the sealant
We will always be straight with you, so here’s what new sealant will not do:
- Putty and glazing repairs
- Sashes that rattle, stick or will not open
- Decisions on consent for listed homes
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
What we seal
- Period & listed homes
- Tenement windows
- Sash and case windows
- Brick reveals
- Timber door frames
- Stone surrounds
Do you need sand mastic in Bushey Mead?
Sand mastic slowly weathers. It hardens, cracks and starts to come away on the stone or timber.
Common reasons people contact us are:
- Failed mastic on an exposed elevation
- Gaps between timber frames and stone or brick
- Mastic dropping out of the joint
- Tired mastic found when preparing windows for paint
As a London address, Bushey Mead can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- How the colour is chosen
- Whether they’re fully insured
- How hidden problems are handled
- What the quote includes, VAT included or not