Greater London · England
Sand Mastic in Paddington
Window and door surrounds in Paddington need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Window mastic to renew ahead of painting
- Wind and rain getting in round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic in Paddington, done properly
We work across Paddington renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on brick reveals, tenement windows and timber door frames, and common reasons people get in touch are draughty sash windows at the surround and cracked mastic round a front door frame.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first, and access in Paddington is something to talk through when you book.
Big or small, you get the same one-year guarantee in Paddington and across Greater London.
- Location
- Paddington (W2, W1H, W1U)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How the visit works
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours per window, depending on the condition of the joints, including the tidy-up. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Tell us if parking is tricky
- For business premises, tell us about site rules or sign-in
- Plan for the work area to be out of bounds to pets and children
Get a quote
For sand mastic in Paddington, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Towns and villages near Paddington
What else we do in Paddington
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Make sure water runs off the sill
- Leave the new mastic unpainted
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
Leave the new mastic unpainted, as traditional guidance advises. If you are redecorating, ask us first.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
Landlords, agents and businesses in Paddington
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What the job involves on each surface
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
What we’re called out for in Paddington
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Common reasons people contact us are:
- Patchy fillers round a sash window
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
- Modern sealant on a period surround
As a London address, Paddington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before booking
- What the quote includes, VAT included or not
- Are they insured?
- Who turns up on the day
- Whether the sealant suits the joint
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
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.
Frames and glazing around Paddington
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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near Church of St John the Evangelist, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near London Paddington station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Paddington is about 1 mile west of City of Westminster, in Greater London. Whether you’re in the middle of Paddington or further out, sand mastic is available for homes and businesses alike. Paddington is one of 764 towns and villages in Greater London we cover.
Every address in W2, W1H and W1U is covered for sand mastic. Sand mastic is available to properties on Harrow Road, Craven Road and Harbet Road and the roads around them. You will find Paddington on the A5 and A40, which makes it straightforward to reach. Other places close to Paddington include Paddington Green (1 mile north-west), Hyde Park Estate (1 mile south-east), Connaught Village (1 mile south-east), Tyburn (1 mile south-east) and Little Venice (1 mile north-west). Larger places within reach include London (4 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Around Paddington
Typical jobs here are in homes near Royal Society of Medicine Library, Fountains Abbey pub and Royal Parks of London and the streets around them. You will also find North Westminster Community School (under half a mile north-east) and Hampden Gurney CofE Primary School (within half a mile east). Paddington has its own railway station: London Paddington station. Well-known places in the area include Harrods (1.3 miles south) and London Toy & Model Museum (0.5 miles south-west). Green spaces nearby include Greville Place nature reserve and The Long Water.
Why act early in Paddington
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Paddington, the repair is bigger than a sealant job.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email and we will talk you through it.
Why Paddington clients choose us
- Tidy, careful work
- Anti-fungal silicone where joints get wet
- Quality sealants from Arbo and Everbuild
- We never seal over old sealant
Take a look at what affects the cost and our reviews.
Paddington: your questions answered
I let a flat near London Paddington station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is parking an issue for sand mastic in Paddington?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Do you work in Paddington?
Yes. We cover Paddington and the rest of Greater London. To book, call 0345 464 0079 or send us an email.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or send us an email.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.