Greater London · England
Sand mastic for sash & case windows in Chessington, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Chessington. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Crumbling sand mastic round a window
Sand mastic in Chessington, done properly
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. If you have wind and rain getting in round a sash window and mastic round period door frames that has failed, we can help, on stone surrounds, tenement windows and timber door frames alike.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking.
A one-year guarantee comes as standard.
- Place
- Chessington (KT9, KT19, KT6)
- Region
- Greater London
- Cover
- One year on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. In a flat in Chessington, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Why choose Mr Mastic in Chessington
- Fully insured
- Neat joints and a tidy finish
- Quality sealants from Arbo and Everbuild
- Homes, businesses and hotels
Take a look at how sealant jobs are priced and what customers say.
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to a full day, depending on how many windows. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Chessington. 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 is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or send us an email.
Advice
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Sashes that need overhauling
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
Joints and surfaces we work on
- Tenement windows
- Timber door frames
- Sash and case windows
- Period & listed homes
- Brick reveals
- Stone surrounds
What affects the quote in Chessington
For a quick quote, just ask. What matters most is:
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- Which sealant suits the joint
- Any working-time requirements on site
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and give you a clear price before we start.
Asking for a quote
What to tell us when you ask for a quote:
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
- Any previous sealing or DIY work
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Also near Chessington
Also in Chessington
Frames and glazing around Chessington
With historic houses such as Fitznells Manor (about 2.2 miles east) nearby, there’s older building stock in the area around Chessington as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking.
As a London address, Chessington can be tricky for parking: let us know about parking bays, permits or a driveway. For an older house near a landmark such as Church of St Mary the Virgin, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Chessington is about 2 miles north-west of Epsom, in Greater London. Homes, rented property, offices and hotels in Chessington can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 764 places across Greater London, from the larger towns to small villages. We also work in London, about 13 miles from Chessington.
Every address in KT9, KT19 and KT6 is covered for sand mastic, from the main roads to the quietest streets. We cover properties on Elm Road, Cox Lane and Moor Lane. Chessington is on the A243, which makes it straightforward to reach. If you’re just outside Chessington, we cover Horton (1 mile south), Old Malden (2 miles north-east), Tolworth (2 miles north-east), Surbiton (2 miles north) and Worcester Park (2 miles east). Larger places within reach include London (13 miles north-east), City of Westminster (12 miles north-east), Marylebone (13 miles north-east), Kensington (10 miles north-east), St Pancras (14 miles north-east) and Shoreditch (15 miles north-east).
Near you in Chessington
In Chessington, that means homes and buildings near Shrewsbury House School, Chessington Community College and Horton Country Park, among other places. Chessington has its own railway station: Chessington North station. Well-known places in the area include Tolworth Hospital (1.2 miles north-east) and Chessington Castle Hill (0.5 miles south-east). Open spaces near Chessington include Kingston Hill Road area and Bonesgate Open Space.
Your questions about sand mastic in Chessington
Is Chessington in your area for sand mastic?
Yes, Chessington is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Can parking be tricky for a visit in Chessington?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or drop us an email.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Do you work for letting agents?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels across Greater London.
I rent my home. Can I book you?
Yes. Ask your landlord first, and we can send them the quote if that helps.
How long will you be here?
As a guide, most jobs take anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer, and we will say how long yours will take.
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Keep modern sealant off the mastic
- Ask a joiner to look at soft timber first
- Go gently near the mastic when preparing windows
- Renew mastic before redecorating the windows
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Signs you need sand mastic in Chessington
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber and we normally remove them.
Most people get in touch when they notice something like this:
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
- Window mastic to renew ahead of painting
If you let a flat or house near Chessington North station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- How hidden problems are handled
- Whether they’re fully insured
- Is VAT in the price?
- What product goes in the joint