Surrey · England
Thames Ditton Sand Mastic
Professional sand mastic in and around Thames Ditton, with every bit of old sealant taken out first and a one-year guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
- Open joints round the window box
Sand mastic in Thames Ditton, done properly
Across Thames Ditton, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. We work on period & listed homes, stone surrounds and brick reveals, and common reasons people get in touch are wind and rain getting in round a sash window and patchy fillers round a sash window.
Many houses in smaller places like Thames Ditton have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
There’s a 12-month guarantee on every job.
- Location
- Thames Ditton (KT7)
- Region
- Surrey
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Get any rot dealt with first
- Check with your local planning authority if your home is listed
- Renew mastic before redecorating the windows
- Avoid patching sand mastic with silicone
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Common problems we fix in Thames Ditton
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Signs it’s time to call us include:
- Mastic dropping out of the joint
- Gaps where the frame meets the masonry
- Mastic that needs renewing before redecorating
- Failed mastic on an exposed elevation
For an older house near a landmark such as Church of St. Nicholas, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- What the cure time is
- What preparation is included
- Which sealant they’ll use, and why
- Whether they seal over old material or remove it
Quotes for sand mastic in Thames Ditton
Every job gets its own quote. This is what makes a difference:
- The size of the job
- Any mould that needs treating
- How many rooms, windows or areas are involved
- Whether the work is at height
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
You don’t need to know the technical terms. Just tell us:
- Any access issues, like height or stairs
- Where the property is
- The type of property
- If someone has resealed it before
For a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
How the visit works
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours per window, depending on the condition of the joints. In a smaller place like Thames Ditton, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Move anything stored near the joints
- On commercial sites, let us know about site rules
- Let us know if you’ve seen damp or leaks
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or email us.
Advice
Places near Thames Ditton
More services for Thames Ditton
What sealant work cannot fix
New sealant cannot fix everything, and we’ll tell you before work begins. Sealant will not put right:
- Decisions on consent for listed homes
- Decayed frames that need repair
- Sashes that need overhauling
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Period & listed homes
- Sash and case windows
- Tenement windows
- Timber door frames
- Brick reveals
- Stone surrounds
Your questions about sand mastic in Thames Ditton
Is Thames Ditton in your area for sand mastic?
Yes. Our work covers London and the South East, and Thames Ditton is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Do you work for landlords with property near Thames Ditton station?
Yes. We work for landlords and agents as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Can you match the sealant colour?
In most cases you can choose. We will explain which colours are available and agree one before work begins.
How long does sand mastic take to go off?
The surface skins quite quickly, then hardens over a longer period. The weather and joint depth both affect it.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or email us.
Are you insured?
Yes. We are fully insured.
What happens if it’s left?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. In an older home around Thames Ditton, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- Quality sealants from Arbo and Everbuild
- ARBOMaster approved applicator
- A 12-month guarantee on all work
- 20+ years of sealant experience
What sand mastic looks like in Thames Ditton
Historic houses like Hampton Court Palace (about 1 mile north) are a reminder that the area around Thames Ditton 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Thames Ditton Junior School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Thames Ditton station? Then any sash windows need sound mastic to keep draughts and rain out.
Thames Ditton is about 1 mile west of Surbiton, in Surrey. We provide sand mastic to homeowners, landlords and businesses in Thames Ditton and nearby, as part of our work across Surrey. Our Surrey coverage runs to 395 places, Thames Ditton among them. We also work in London, about 13 miles from Thames Ditton.
Jobs for sand mastic in KT7 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on High Street, Watts Road and Ditton Close or anywhere close by, we can help. Thames Ditton is on the A307, which makes it straightforward to reach with everything needed for sand mastic. If you’re just outside Thames Ditton, we cover Weston Green (1 mile south-west), Long Ditton (1 mile east), Hinchley Wood (1 mile south), Seething Wells (1 mile east) and Molesey (1 mile north-west). We also work in nearby towns such as Guildford (14 miles south-west), Woking (12 miles south-west), Epsom (5 miles south-east), Redhill (13 miles south-east), Ewell (4 miles south-east) and Egham (10 miles west).
What’s near Thames Ditton
We work in homes and buildings around Esher College, George and Dragon pub and Shrewsbury House School. There’s a railway station in Thames Ditton itself: Thames Ditton station. Other landmarks nearby include Metropolitan Police Mounted Branch Museum (0.8 miles west) and Tolworth Hospital (2 miles east). Not far away are The Wood and The Lake.
Surface by surface
Timber door frames
Doors face weather and wear and the mastic can crack early. We rake it out and renew it.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.