Greater London · England
Sand Mastic in Seven Kings
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Seven Kings, backed by a one-year guarantee. Ask us for a quote.
- Weathered mastic on the most exposed windows
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
How we handle sand mastic in Seven Kings
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. Typical jobs include wind and rain getting in round a sash window and gaps round a timber door in stone or brick, across period & listed homes, stone surrounds and tenement windows.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
You get a one-year guarantee, the same in Seven Kings as everywhere else we work.
- Place
- Seven Kings (IG3, IG2, IG1)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How the job changes by surface
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Why act early in Seven Kings
If you are redecorating, renew the mastic first. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Seven Kings, the repair is bigger than the sealant job would have been.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why us?
- 12-month guarantee on every job
- Experience in homes, commercial sites and hotels
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
Read how sealant jobs are priced or our reviews.
Seven Kings: your questions answered
Is parking a problem for a job in Seven Kings?
Parking in Seven Kings, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Is Seven Kings in your area for sand mastic?
Yes. Our work covers London and the South East, and Seven Kings is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
How do I get a quote for sand mastic in Seven Kings?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email and let us know what needs doing and where.
How long does sand mastic take to harden?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can sand mastic be painted?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. For a job in Seven Kings, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- For business premises, tell us about site rules or sign-in
Ask for a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear quote before work begins.
Read more
Windows and doors in Seven Kings
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Valentines Mansion (about 1.4 miles west) nearby, there’s older building stock in the area around Seven Kings as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around 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 Seven Kings station, older sash windows in a rental need their mastic kept sound to keep the weather out. If you look after a building such as Downshall Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Seven Kings is about 2 miles north of Barking, in Greater London. Every kind of property in Seven Kings can book us for sand mastic. Every job comes with our 12-month guarantee. Seven Kings is one of 764 places in Greater London where we work for sand mastic. Our London page covers work nearby.
Postcode districts we cover here for sand mastic: IG3, IG2 and IG1. Local streets include New Road, Lynn Road and High Road, all of which we cover. Seven Kings is on the A118, which makes it straightforward to reach. Nearby, we also carry out sand mastic in Newbury Park (1 mile north-west), Ilford (1 mile south-west), Gants Hill (1 mile north-west), Barkingside (1 mile north-west) and Cranbrook (1 mile west). Larger places within reach include London (10 miles south-west), City of Westminster (11 miles west), Marylebone (11 miles west), Kensington (14 miles west), St Pancras (10 miles west) and Shoreditch (8 miles west).
What’s near Seven Kings
In Seven Kings, that means homes and buildings near Palmer Catholic Academy and South Park. Seven Kings has its own railway station: Seven Kings station. Other landmarks nearby include The Brewery (3.6 miles east) and Redbridge Museum (1.2 miles south-west). The countryside around Seven Kings includes Hainault Lodge and Hollow Pond.
Quotes for sand mastic in Seven Kings
The quote reflects the job in front of us. We take into account:
- When we can work, for business premises
- How many areas need sealing
- The product the joint needs
- How easy the joints are to reach
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- If someone has resealed it before
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
If you’re in Seven Kings and need sand mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
For landlords and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Places near Seven Kings
Other services in Seven Kings
What sealant work can’t fix
In fairness, there are a few things sealant won’t fix:
- Cracked or broken glass
- Timber that has rotted
- Sashes that need overhauling
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Timber door frames
- Sash and case windows
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Ask us before painting near the mastic
- Keep modern sealant off the mastic
- Check with your local planning authority if your home is listed
- Sort the mastic before the decorators arrive
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.