Greater London · England
Hoxton Sand Mastic
We cover Hoxton for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
- Modern sealant on a period surround
Frames and glazing around Hoxton
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before you book.
If you look after a building such as Shoreditch Park Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Hoxton station, any sash windows need sound mastic to keep draughts and rain out.
Hoxton is about 2 miles north of London, in Greater London. If you need sand mastic in Hoxton, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Greater London, Hoxton included. Our Greater London coverage runs to 764 places, Hoxton among them.
Our applicators cover all of the N1, N1P and EC1V postcode area for sand mastic. Local streets include City Road, Noel Road and East Road, all of which we cover. Main roads around Hoxton include the A1200 and A1208. Neighbouring places we cover for sand mastic include Haggerston (1 mile east), Shoreditch (1 mile south-east), Canonbury (1 mile north), De Beauvoir Town (1 mile north) and St Luke's (1 mile south-west). We also work in nearby towns such as City of Westminster (3 miles south-west), Marylebone (3 miles south-west), Kensington (6 miles south-west), Walthamstow (4 miles north-east), Hampstead (4 miles west) and Ruislip (14 miles west). Hoxton is one of the larger places we cover in Greater London.
Near you in Hoxton
We work in homes and buildings around Bishopsgate Institute Special Collections and Archives, Islington Green School and Stag's Head pub, among other places. Other local landmarks include Hackney University Technical College (under half a mile south-east) and Shoreditch Park (within half a mile north-west). Hoxton has its own railway station: Hoxton station. Nearby you will also find St Leonard's Hospital (under half a mile east) and Montfichet's Tower (1.6 miles south-west). Not far away are St. James's Park Lake and Barnsbury Wood.
Sand mastic in Hoxton, done properly
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It suits period and listed homes where a modern sealant bead would stand out. Common call-outs are for old sand mastic that has cracked, crumbled or fallen out and draughty sash windows at the surround, across brick reveals, period & listed homes and sash and case windows.
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, and access in Hoxton is something to talk through when you book.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Hoxton (N1, N1P, EC1V)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Quotes for sand mastic in Hoxton
Call for a quick quote. What matters most is:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- The number and length of the joints
- When we can work, for business premises
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What we need to know
To help us quote quickly, let us know:
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
For a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
When it is not the sealant
A few problems are outside what sealant work can do:
- Sashes that need overhauling
- Whether work needs listed building consent
- Crumbling stone or brickwork round the window
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Tenement windows
- Stone surrounds
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows
Places near Hoxton
Also in Hoxton
What happens on the day
There isn’t much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Hoxton. It helps if you can point us to a visitor permit or a bay close to the door.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Clear the area around the work
- Keep pets and children clear of the area while we work
- Let us know if you’ve seen damp or leaks
Getting a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved.
Advice
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
For anyone letting property in or around Hoxton, several properties can go on one quote. Send us the addresses and the work at each.
Common questions in Hoxton
Do you work for landlords with property near Hoxton station?
Yes, we work for landlords and letting agents. Just call 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 Hoxton?
Parking in Hoxton, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do you cover Hoxton?
Yes. We are based in Crawley and work across South East England, London and Scotland.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll explain our choice.
Is consent needed for window work on a listed home?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like, but they decide.
How much does sand mastic cost in Hoxton?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Ask a joiner to look at soft timber first
- Keep modern sealant off the mastic
- Sort the mastic before the decorators arrive
- Leave the new mastic unpainted
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Hoxton, the repair is bigger than a sealant job.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- More than 20 years in sealant work
- Rated 4.9 stars on Google
- 12-month guarantee on every job
- Trusted Arbo and Everbuild sealants
Do you need sand mastic in Hoxton?
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
People generally contact us when they notice something like this:
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Old cement repairs round a window that have failed
- Old sand mastic that has cracked, crumbled or fallen out
Hoxton is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- Whether you can choose the colour
- What happens if the job turns out different
- The length of the guarantee
- Whether they’re fully insured