Greater London · England
South Tottenham Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for South Tottenham, backed by a one-year guarantee. Call for a quick quote.
- Mastic round period door frames that has failed
- Window mastic to renew ahead of painting
- Mastic dropping out of the joint
Honest limits
To be straight with you, there are a few things sealant will not fix:
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
- Crumbling stone or brickwork round the window
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Tenement windows
- Timber door frames
- Brick reveals
- Sash and case windows
- Stone surrounds
- Period & listed homes
Sand mastic for homes and businesses in South Tottenham
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on brick reveals, period & listed homes and tenement windows, and common reasons people get in touch are gaps between timber frames and stone or brick and window mastic to renew ahead of painting.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in South Tottenham.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- South Tottenham (N15, N17, N16)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Frames and glazing around South Tottenham
Rainfall in the South East is lower than in much of the UK, 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.
Homes close to Church of Holy Trinity include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Earlsmead Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
South Tottenham is about 2 miles west of Walthamstow, in Greater London. We carry out sand mastic for homes and businesses in South Tottenham and nearby. We cover 764 towns and villages across Greater London. London is on our list too, around 6 miles away.
Jobs for sand mastic in N15, N17 and N16 works the same way as everywhere else we cover. Sand mastic is available to properties on Ida Road, Elmar Road and Grove Road and the roads around them. We also cover the places around South Tottenham: Seven Sisters (1 mile south), Tottenham Green (1 mile north), St Ann's (1 mile west), Tottenham Hale (1 mile north-east) and West Green (1 mile west). Further out, we also cover London (6 miles south), City of Westminster (6 miles south-west), Marylebone (6 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south-west) and Shoreditch (4 miles south).
What’s near South Tottenham
Around South Tottenham, our work takes us to homes and buildings near Church of St Andrew, Ada College and Gladesmore Community School, among other places. Also close by are Chestnuts Park (0.7 miles west) and No.8 Seven Sisters pub (0.5 miles south-west). South Tottenham has its own railway station: Seven Sisters station. Nearby you will also find The Mall Wood Green (1.7 miles north-west) and North Middlesex University Hospital (2 miles north). The countryside around South Tottenham includes Highgate Hill and Woodberry Wetlands.
Do you need sand mastic in South Tottenham?
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
The most common problems we see are:
- Gaps round a timber door in stone or brick
- Mastic worn away on windows facing the weather
- Silicone on a period window that looks wrong
- Draughts and rain around sash boxes
If you let a flat or house near Seven Sisters station, any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- How much experience the applicator has
- How the colour is chosen
- When the joint can take water or movement
- What guarantee comes with the work
Landlords, agents and businesses in South Tottenham
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Also near South Tottenham
Also in South Tottenham
Common questions in South Tottenham
Do you cover South Tottenham for sand mastic?
Yes, South Tottenham is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Can you help a landlord with a rental near Seven Sisters station?
Yes. We work for landlords and agents as well as homeowners. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Do you guarantee sand mastic work?
All our work has a 12-month guarantee, and we are fully insured.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s built up in the joint by hand and shaped to suit the surround.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Do you have insurance?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
How do I get a quote for sand mastic in South Tottenham?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Keeping the joints in good condition
So the new joints stay in good condition:
- Plan mastic work ahead of painting
- Keep sills and gutters clear so water drains away
- Check with your local planning authority if your home is listed
- Keep modern sealant off the mastic
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in South Tottenham, the repair is bigger than a sealant job.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why us?
- Domestic, commercial and hotel work
- ARBOMaster approved applicator
- We never seal over old sealant
- Every job guaranteed for a year
See our cost guide and what customers say.
Surface by surface
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
How it works
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and clear up. Most jobs take a few hours per window, depending on the condition of the joints. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in South Tottenham. A visitor permit or a nearby bay makes the visit run more smoothly.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Tell us if parking is tricky
- Move anything stored near the joints
- For business premises, tell us about site rules or sign-in
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.