Greater London · England
Sand mastic for sash & case windows in Teddington, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Teddington, backed by a one-year guarantee. Call for a quick quote.
- Mastic worn away on windows facing the weather
- Draughty sash windows at the surround
- Cement or filler used on old window joints that has cracked
FAQs for Teddington
Do you work for landlords with property near Teddington station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Is parking an issue for sand mastic in Teddington?
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.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
Where do you work from?
We work from Crawley. Our applicators cover Teddington.
Are you fully insured?
Yes, we’re fully insured for every job we do.
Is sand mastic better than silicone for my windows?
That depends on your windows. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Can new sealant go over the old?
No, it won’t last. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
About our sand mastic in Teddington
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it so the surround looks right again. We work on period & listed homes, brick reveals and stone surrounds, and the jobs we see most are gaps between timber frames and stone or brick and cement or filler used on old window joints that has cracked.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Teddington as anywhere.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Teddington (TW11, TW12, TW2, TW1)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Teddington, the repair is bigger than a sealant job.
Combining jobs into one visit normally makes better use of the time than several visits. We’ll give you a clear price for the lot.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- Any old sealant cut out fully, not covered over
- We are fully insured
- 180+ five-star Google reviews
Read our cost guide and our reviews.
What affects the quote in Teddington
The quote reflects the job in front of us. We look at:
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- The type of sealant required
- How much there is to do
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Any previous sealing or DIY work
- The rough size of the job
- A few photos by email, if you can
- Access, such as stairs, a lift or height
If you are in Teddington and need sand mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.
Windows and doors in Teddington
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
As a London address, Teddington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For landlords with property near Teddington station, any sash windows need sound mastic to keep draughts and rain out. Schools such as St Mary's and St Peter's Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Teddington is about 5 miles west of Wimbledon, in Greater London. Whether you are in the middle of Teddington or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Teddington is one of 764 towns and villages in Greater London we cover for sand mastic. You can also see our page for London, roughly 11 miles from Teddington.
Our applicators cover all of the TW11, TW12, TW2 and TW1 postcode area for sand mastic. If you need sand mastic at a property on Station Road, High Street and Church Road or anywhere close by, our applicators can take on the job. Teddington sits on or near the A311 and A313, so getting to you is simple. If you’re just outside Teddington, we cover Strawberry Hill (1 mile north), Fulwell (1 mile north-west), Hampton Hill (1 mile west), Ham (1 mile north-east) and Eel Pie Island (1 mile north). Within a short drive, we also cover London (11 miles north-east), City of Westminster (10 miles north-east), Marylebone (10 miles north-east), Kensington (8 miles north-east), St Pancras (12 miles north-east) and Shoreditch (13 miles north-east).
Landmarks near Teddington
Typical jobs here are in homes near Bushy Park, Turing House School and Newland House School, among other places. There’s a railway station in Teddington itself: Teddington station. Nearby you’ll also find Teddington Memorial Hospital (under half a mile west) and Eel Pie Island Museum (1.5 miles north). Green spaces nearby include Ham Lands and Kew Gardens Lake.
Places near Teddington
More services for Teddington
What the job involves on each surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Teddington. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Clear the area around the work
- Let us know about earlier repairs to the joints
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, phone 0345 464 0079 or email us.
Read more
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Sashes that rattle, stick or won’t open
- Damaged stone surrounds
- Putty and glazing repairs
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- Tenement windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Sash and case windows
- Stone surrounds
For landlords and businesses
Landlords and letting agents in Teddington can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured.