Greater London · England
Sand Mastic in Plashet
Sand mastic across Plashet and nearby, with old sealant always removed completely and a 12-month guarantee.
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Draughts and rain around sash boxes
How we handle sand mastic in Plashet
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. Typical jobs include a silicone bead on a sash window that spoils the look and mastic round period door frames that has failed, across tenement windows, period & listed homes and brick reveals.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Plashet.
Whatever the size of the job, you get the same one-year guarantee in Plashet and across Greater London.
- Where
- Plashet (E6, E12, E7)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Go gently near the mastic when preparing windows
- Make sure water runs off the sill
- Have rotten timber repaired before new mastic goes in
- Avoid patching sand mastic with silicone
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. The longer it’s left, the more the joint opens.
Leave it or put it right?
Draughts round a sash window aren’t always the sashes. Gaps between the frame and the wall can be just as bad, and renewing the mastic closes them. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Plashet, 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, and we will explain the quote if you ask.
Why book with us
- Rated 4.9 stars on Google
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
Read our cost guide or what customers say.
Your questions about sand mastic in Plashet
Is parking an issue for sand mastic in Plashet?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Can you help a landlord with a rental near Woodgrange Park station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.
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.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
How long does sand mastic take to harden?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before work begins.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
How do I get a quote for sand mastic in Plashet?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before we start.
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. It usually takes 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 Plashet. 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.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
Getting a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details.
Advice
Different surfaces, different methods
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is generally favoured.
Nearby places to Plashet
Other services in Plashet
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Windows and doors in Plashet
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. Historic houses like Valentines Mansion (about 2.2 miles north) are a reminder that the area around Plashet has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Woodgrange Park station, any sash windows need sound mastic to keep draughts and rain out. Homes close to Church of St Barnabas include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as Plashet School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Plashet is about 2 miles north-east of Plaistow, in Greater London. Wherever you are in the E6 postcode area, our applicators can take on sand mastic. Our area takes in 764 places across Greater London. London is on our list too, around 7 miles away.
Every address in E6, E12 and E7 is covered for sand mastic. Whether your property is on Fry Road, Edith Road and Hilda Road or anywhere close by, our applicators can take on the job. If you’re just outside Plashet, we cover Manor Park (1 mile north-east), Little Ilford (1 mile north-east), Upton Park (1 mile south-west), Upton (1 mile west) and Wallend (1 mile south-east). Within a short drive, we also cover London (7 miles south-west), City of Westminster (9 miles west), Marylebone (9 miles west), Kensington (11 miles west), St Pancras (7 miles west) and Shoreditch (6 miles west).
Near you in Plashet
Around Plashet, our work takes us to homes and buildings near Monega Primary School, The Overdraft Tavern and West Ham Park, among other places. Plashet’s nearest station is Woodgrange Park station, about 0.5 miles north of the centre. Nearby you will also find Newham University Hospital (1.5 miles south) and Stratford Centre (2.1 miles west). Not far away are Old Ford Island and Hollow Pond.
For landlords and businesses
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured for the work.
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.
Quotes for sand mastic in Plashet
There’s no set price list. What we look at:
- The type of sealant required
- Working hours on commercial sites
- Any mould that needs treating
- How many rooms, windows or areas are involved
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. You will know the price before we begin.
Helping us quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
- Where the property is
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or send us an email.