Greater London · England
Sand Mastic in Spitalfields
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Spitalfields. Fully insured, ARBOMaster approved and guaranteed for a year.
- Open joints round the window box
- Patchy fillers round a sash window
- Wind and rain getting in round a sash window
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Sand mastic in Spitalfields
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. If you are dealing with window mastic to renew ahead of painting and cracked mastic round a front door frame, we can put it right.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Spitalfields.
You get a 12-month guarantee, the same in Spitalfields as everywhere else we work.
- Place
- Spitalfields (E1, EC2A, E1W)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Quotes for sand mastic in Spitalfields
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The product the joint needs
- Access and height
- The number and length of the joints
- Mould in or behind the old joints
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Roughly how big the job is
- The address or postcode of the job
- Access, such as stairs, a lift or height
- The type of property
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
Common problems we fix in Spitalfields
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
These are the problems we are asked about most:
- Open joints round the window box
- Draughty sash windows at the surround
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
If you look after a building such as Makers Academy, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- How much experience the applicator has
- Which colour the sealant will be
- What the quote includes, VAT included or not
- Are they insured?
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Ask us before painting near the mastic
- Check the mastic when you check the paintwork
- Have rotten timber repaired before new mastic goes in
- Renew mastic before redecorating the windows
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
Leave it or put it right?
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Spitalfields, the repair is bigger than a sealant job.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why book with us
- Trusted Arbo and Everbuild sealants
- Homes, businesses and hotels
- Anti-fungal sanitary silicone in wet areas
- Neat joints and a tidy finish
Take a look at what affects the cost and customer reviews.
Towns and villages near Spitalfields
Also in Spitalfields
Frames and glazing around Spitalfields
With historic houses such as Mansion House (about 0.7 miles west) nearby, there’s older building stock in the area around Spitalfields as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Christ Church, the joint between an old wall and a newer frame is usually the first place rain gets in. Spitalfields is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Spitalfields is about 1 mile north-east of London, in Greater London. If you need sand mastic in Spitalfields, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Greater London, Spitalfields included. Spitalfields is one of 764 towns and villages in Greater London where we work.
Postcode districts we cover here for sand mastic: E1, EC2A and E1W. We cover properties on New Road, Mark Lane and Bell Lane. Spitalfields sits on or near the A10 and A1202, which makes travel easy. Other places close to Spitalfields include Whitechapel (1 mile east), Aldgate (1 mile south-west), Bishopsgate (1 mile west), Tower Hill (1 mile south) and Shoreditch (1 mile north). Further out, we also cover City of Westminster (3 miles west), Marylebone (3 miles west), Kensington (6 miles west), Walthamstow (5 miles north-east), Hampstead (5 miles north-west) and Ruislip (15 miles west).
Around Spitalfields
In Spitalfields, that means homes and buildings near Finsbury Circus, Bishopsgate Institute Special Collections and Archives and Canon Barnett Primary School, among other places. Other local landmarks include St Mary-at-Hill (0.6 miles south-west), London Enterprise Academy (0.5 miles east) and Kings Stores pub (less than half a mile north-west). There’s a railway station in Spitalfields itself: London Liverpool Street station. Other landmarks nearby include Tower of London (0.6 miles south) and Gabriel's Wharf (1.5 miles west). Green spaces nearby include Tower Hill and Lavender Pond.
The process
Every visit runs the same way: we check the joints, 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. For a job in Spitalfields, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know about parking restrictions
- Clear items away from the joints we are working on
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
Advice
Questions from Spitalfields
Can you do sand mastic in Spitalfields?
Yes, Spitalfields is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Do you work for landlords with property near London Liverpool Street station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Is sand mastic better than silicone for my windows?
We’ll help you decide. Period homes often look best with sand mastic and newer frames suit modern sealant.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Can old silicone round a sash window be swapped for sand mastic?
Yes. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Are you fully insured?
Yes, we are fully insured for every job we do.