Surrey · England
Sand mastic for sash & case windows in Horton, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Horton, backed by a 12-month guarantee. Call for a quick quote.
- Cement or filler used on old window joints that has cracked
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps round a timber door in stone or brick
Your questions about sand mastic in Horton
Is Horton within the area you cover?
Yes, Horton is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Chessington South station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do you offer different sealant colours?
Yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before any work starts.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
What does sand mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we’ll advise.
About our sand mastic in Horton
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. We’re often asked to deal with silicone on a period window that looks wrong and open joints round the window box, across period & listed homes, sash and case windows and timber door frames.
Around Horton, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Horton (KT19, KT9)
- Region
- Surrey
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere as small as Horton, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
Get a quote
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
Advice
Sand mastic in Horton: local notes
Historic houses like Fitznells Manor (about 1.7 miles east) are a reminder that the area around Horton has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
Managing a site like St Mary's CofE (Aided) Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near Church of St Mary the Virgin, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Horton is about 1 mile north-west of Epsom, in Surrey. We provide sand mastic to householders, landlords and businesses in Horton. Our Surrey coverage runs to 395 places, and Horton is one of them. Our London page covers work nearby, about 13 miles away.
Every address in KT19 and KT9 is covered for sand mastic. If you need sand mastic at a property on Horton Lane, Oakwood Avenue and Jenner Way or a nearby road, our applicators can take on the job. Close by, we work in Chessington (1 mile north), Epsom (1 mile south-east), Ewell (2 miles east), Old Malden (2 miles north-east) and Stoneleigh (2 miles north-east). Further out, we also cover Guildford (14 miles south-west), Woking (12 miles west), Horley (13 miles south-east), Redhill (9 miles south-east), Egham (12 miles north-west) and Reigate (9 miles south-east).
Near you in Horton
Around Horton, our work takes us to homes and buildings near Chessington Community College, Horton Country Park and Kingswood House School. The closest station to Horton is Chessington South station, roughly 0.9 miles north-west of the centre. Other landmarks nearby include Epsom Cluster (0.6 miles south-east) and Cockney Museum (2.1 miles north-east). Open spaces near Horton include Bonesgate Open Space and The Lake.
How to look after the new joints
To keep the joints looking good and working properly:
- Plan mastic work ahead of painting
- Clear gutters so water doesn’t pour onto the windows
- Have rotten timber repaired before new mastic goes in
- Take care around the mastic when scraping paint
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
Quotes for sand mastic in Horton
We quote each job individually. These are the things that affect it:
- Access and height
- The number and length of the joints
- Any working-time requirements on site
- The number of rooms or windows
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What to tell us for a quote
To make quoting easier, let us know:
- A few photos by email, if you can
- The type of property
- What’s wrong with the joints now
- Whether it has been sealed before
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.
Also near Horton
Also in Horton
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 new mastic seals them. Older cottages and farmhouses around Horton can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why choose Mr Mastic in Horton
- 180+ five-star Google reviews
- Experience in homes, commercial sites and hotels
- Every job guaranteed for a year
- We leave the area clean and tidy
Take a look at our cost guide and our reviews.
Do you need sand mastic in Horton?
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
Common reasons people contact us include:
- Mastic dropping out of the joint
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Tired mastic found when preparing windows for paint
Rented homes near Chessington South station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- Whether they’re fully insured
- Whether they seal over old material or remove it
- How much experience the applicator has
- How long to leave it before use
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How the job changes by surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. We shape it by hand to follow the stone.