Greater London · England
Sand Mastic in East Sheen
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in East Sheen. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
- Gaps between timber frames and stone or brick
East Sheen questions
Can you help a landlord with a rental near Mortlake station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Do you cover East Sheen for sand mastic?
Yes, East Sheen is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Can you match the sealant colour?
Generally, yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before any work starts.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
How do I get a quote for sand mastic in East Sheen?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed.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 any work starts.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Sand mastic in East Sheen, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on period & listed homes, sash and case windows and stone surrounds, and people most often call us about mastic worn away on windows facing the weather and gaps where the frame meets the masonry.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease generally says who is responsible for the windows, so it’s worth checking before booking, and access in East Sheen is something to talk through when you book.
You get a 12-month guarantee, the same in East Sheen as everywhere else we work.
- Where
- East Sheen (SW14, SW13, SW15)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in East Sheen
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
The most common problems we see are:
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
Managing a site like Thomson House School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- What happens if the job turns out different
- Whether they’re fully insured
- Is the old sealant removed completely?
- Whether VAT is included
Places near East Sheen
More services for East Sheen
What we do, step by step
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for a single window, longer for several. For a job in East Sheen, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
How to get a quote
Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or send us an email and describe the job.
Advice
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Ask a joiner to look at soft timber first
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
- Do not run silicone over sand mastic
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Windows and doors in East Sheen
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Chiswick House (about 1.3 miles north) nearby, there’s older building stock in the area around East Sheen as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Mortlake station, older sash windows in a rental need their mastic kept sound to keep the weather out. East Sheen is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
East Sheen is about 3 miles west of Fulham, in Greater London. Jobs in East Sheen get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. East Sheen is one of 764 towns and villages in Greater London we cover. You can also see our page for London, roughly 8 miles from East Sheen.
Jobs for sand mastic in SW14, SW13 and SW15 is quoted and booked the same way as anywhere else. Streets in the area include Elm Road, Well Lane and Fife Road, all of which we cover. We also cover the places around East Sheen: Mortlake (1 mile north-east), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Richmond upon Thames (1 mile west). Within a short drive, we also cover London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Local landmarks in East Sheen
Around East Sheen, our work takes us to homes and buildings near Hare and Hounds pub, Palewell Park and Ibstock Place School. East Sheen has its own railway station: Mortlake station. Nearby you’ll also find Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (0.5 miles east). The countryside around East Sheen includes Duke's Hollow and Kew Gardens Lake.
Landlords, agents and businesses in East Sheen
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Letting agents and landlords in East Sheen can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A DIY attempt does not rule out a professional job. We cut it out and start again.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Crumbling stone or brickwork round the window
- Rotten sashes, sills or window boxes (a joiner’s job)
- Whether work needs listed building consent
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Period & listed homes
- Timber door frames
- Stone surrounds
- Brick reveals
- Tenement windows
- Sash and case windows
What affects the quote in East Sheen
The price is agreed before any work begins. It takes into account:
- Any mould that needs treating
- The type of sealant required
- When we can work, for business premises
- The amount of work
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it has been sealed before
- Roughly how big the job is
- The type of property
- Where the property is
We don’t publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.