Greater London · England
South Woodford Sand Mastic
Our applicators work in South Woodford on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Failed mastic on an exposed elevation
- Draughts and rain around sash boxes
- Open joints round the window box
How we quote for sand mastic
Jobs vary more than people expect. What affects the quote:
- Working hours on commercial sites
- The old material and how stubborn it is
- How many areas need sealing
- The size of the job
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- How we’d reach the joints
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- The type of property
Need a quote? Please ring 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.
Sand mastic for homes and businesses in South Woodford
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic is the traditional choice, and we can replace one with the other. Common call-outs are for silicone on a period window that looks wrong and gaps between timber frames and stone or brick, across stone surrounds, sash and case windows and timber door frames.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- South Woodford (E18, IG8, E11)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Also near South Woodford
What else we do in South Woodford
Leave it or put it right?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. 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. If you’re not sure whether it needs doing, call 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why us?
- Arbo and Everbuild products
- 4.9 on Google from 180+ five-star reviews
- Fully insured
- Anti-fungal silicone where joints get wet
Read how sealant jobs are priced and customer reviews.
When it is not the sealant
We’ll always be straight with you, so here’s what sealant cannot fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Crumbling stone or brickwork round the window
- Planning or listed building consent (your local planning authority decides)
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Timber door frames
- Brick reveals
- Tenement windows
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Landlords and letting agents in South Woodford can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Different surfaces, different methods
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.
South Woodford questions
Do you cover South Woodford for sand mastic?
Yes. Our work covers London and the South East, and South Woodford is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
I let a flat near Wood Street station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
Can I paint the new mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
What does sand mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or drop us an email with a short description of the job.
Windows and doors in South Woodford
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. 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.
For an older house near a landmark such as Holy Trinity, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Wood Street station change hands often, and any sash windows need sound mastic to keep draughts and rain out. As a London address, South Woodford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
South Woodford is about 1 mile south of Woodford, in Greater London. From the centre of South Woodford to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Our Greater London coverage runs to 764 places, and South Woodford is one of them. For nearby work, see our London page, about 8 miles away.
Jobs for sand mastic in E18, IG8 and E11 is quoted and booked the same way as anywhere else. We cover properties on High Road, Grove Road and Daisy Road and the roads around them. Being close to the A113 and A1199, South Woodford is simple for us to get to for sand mastic. Nearby, we also carry out sand mastic in Snaresbrook (1 mile south-west), Wanstead (1 mile south), Upper Walthamstow (1 mile south-west), Redbridge (2 miles south-east) and Walthamstow Village (2 miles south-west). Within a short drive, we also cover London (8 miles south-west), City of Westminster (9 miles south-west), Marylebone (9 miles south-west), Kensington (12 miles south-west), St Pancras (8 miles south-west) and Shoreditch (6 miles south-west).
Landmarks near South Woodford
Locally, jobs take us to homes and businesses close to The Highams Park, Woodbridge High School and The George Inn, among other places. The nearest railway station is Wood Street station, roughly 1.3 miles west. Nearby you’ll also find 17 & Central (2.2 miles west) and Walthamstow Pump House Museum (2.8 miles south-west). For a walk, there’s Pole Hill and Hollow Pond.
The process
At the end, we look at the finished work together and tell you how long to leave it. The visit itself normally takes a few hours per window, depending on the condition of the joints, depending on the amount of work. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in South Woodford. It helps if you can point us to a visitor permit or a bay close to the door.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
- Move anything stored near the joints
Ask for a quote
We quote each job on its own. Just ring 0345 464 0079 or send us an email with the details, and photos are welcome.