Greater London · England
Sand Mastic in Fish Island
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Fish Island. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Mastic worn away on windows facing the weather
- Mastic dropping out of the joint
Questions from Fish Island
Is Fish Island in your area for sand mastic?
Yes, Fish Island is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Can parking be tricky for a visit in Fish Island?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected.
What guarantee comes with the work?
Our 12-month guarantee applies to all our work.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
How long does the job take?
Typically it takes anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant.
Sand mastic in Fish Island
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. Typical jobs include tired mastic found when preparing windows for paint and gaps where the frame meets the masonry, on brick reveals, tenement windows and sash and case windows.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Fish Island as anywhere.
A one-year guarantee comes as standard, so you are covered after we have gone.
- Place
- Fish Island (E3, E9, E20)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Towns and villages near Fish Island
More services for Fish Island
How it works
The work is kept neat and contained to the area we’re working on. The job normally takes a few hours for a single window, longer for several. For a job in Fish Island, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
- Let us know about parking restrictions
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
Advice
Aftercare tips
To keep the joints looking good and working properly:
- Look over the window mastic once a year
- Go gently near the mastic when preparing windows
- Plan mastic work ahead of painting
- Keep modern sealant off the mastic
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
What we’re called out for in Fish Island
Most of it is simply age. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
The problems people generally mention when they call include:
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
- Crumbling sand mastic round a window
- Silicone on a period window that looks wrong
In the older streets around St Mary of Eton, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- What preparation is included
- What product goes in the joint
- Is the old sealant removed completely?
- How long to leave it before use
Frames and glazing around Fish Island
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Fish Island is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Schools such as Mossbourne Riverside Academy are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Fish Island is about 1 mile west of Stratford, in Greater London. Whether you’re in the middle of Fish Island or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Fish Island is one of 764 towns and villages in Greater London where we work for sand mastic.
Work in E3, E9 and E20 works the same way as everywhere else we cover. Local streets include Wick Lane, Dace Road and Wyke Road, and we cover them all. Neighbouring places we cover for sand mastic include Hackney Wick (1 mile north), Old Ford (1 mile south), Donnybrook Quarter (1 mile south-west), Bow (1 mile south) and East Village (1 mile north-east). We also work in nearby towns such as London (4 miles south-west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Shoreditch (3 miles west).
Around Fish Island
Around Fish Island, our work takes us to homes and buildings near Mulberry UTC, Grove Hall Park and The Lea Tavern and the streets around them. Fish Island has its own railway station: Hackney Wick station. Other landmarks nearby include V&A East (within half a mile east) and Tower of London (3.1 miles south-west). Open spaces near Fish Island include Hollow Pond and Tower Hill.
Leave it or put it right?
If you are redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
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 Fish Island customers choose us
- 20+ years of sealant experience
- Sanitary silicone with an anti-fungal additive in wet areas
- Arbo and Everbuild products
- Domestic, commercial and hotel work
Take a look at what affects the cost or what customers say.
Honest limits
Before you book, it’s worth knowing the limits too:
- Sashes that need overhauling
- Timber that has rotted
- Broken panes
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Where we work in Fish Island
- Sash and case windows
- Stone surrounds
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
How we quote for sand mastic
There’s no set price list. What we look at:
- Whether old sealant or filler has to be cut out
- The amount of work
- The type of sealant required
- The number of rooms or windows
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What we need to know
Before you ask for a quote, have a think about:
- The type of property
- The problem you’ve noticed
- Where the property is
- Whether it has been sealed before
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.