Essex · England
Sand mastic for sash & case windows in Coxtie Green, Essex
Sand mastic across Coxtie Green and nearby, with old sealant always removed completely.
- Old cement repairs round a window that have failed
- Weathered mastic on the most exposed windows
- A silicone bead on a sash window that spoils the look
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- How easy the joints are to reach
- Which sealant suits the joint
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
There’s no need for technical detail. Just tell us:
- A few photos by email, if you can
- Where the job is, and your postcode
- Whether it has been sealed before
- Roughly how big the job is
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Sand mastic for homes and businesses in Coxtie Green
Silicone on a period window often looks wrong and is not always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. If you are dealing with mastic worn away on windows facing the weather and tired mastic found when preparing windows for paint, we can help, on timber door frames, tenement windows and sash and case windows alike.
Around Coxtie Green, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Where
- Coxtie Green (CM14)
- Wider area
- Essex
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Coxtie Green
What else we do in Coxtie Green
How the job changes by surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
Frames and glazing around Coxtie Green
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Hare Hall (about 4.3 miles south-west) are a reminder that the area around Coxtie Green 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.
Letting a property close to Brentwood station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. If you live in an older home near Trinity Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Becket Keys Church of England School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Coxtie Green is about 2 miles north-west of Brentwood, in Essex. Wherever you are in the CM14 postcode area, our applicators can take on sand mastic. Coxtie Green is one of 644 places in Essex we cover for sand mastic. There’s also a page for Chelmsford, about 12 miles away.
Jobs for sand mastic in CM14 is quoted and booked the same way as anywhere else. We cover properties on Coxtie Green Road and Warwick Place. Neighbouring places we cover for sand mastic include Bentley (1 mile north), Navestock Side (1 mile north), Horseman Side (1 mile west), St Vincent's Hamlet (1 mile south-west) and South Weald (1 mile south). Larger places within reach include Chelmsford (12 miles north-east), Basildon (10 miles south-east), Harlow (11 miles north-west), Billericay (7 miles east), Rayleigh (15 miles east) and Loughton (8 miles west).
Around Coxtie Green
Typical jobs here are in homes near The White Horse pub and Weald Country Park, among other places. Coxtie Green’s nearest station is Brentwood station, roughly 2.6 miles south-east. Well-known places in the area include Brentwood Community Hospital (2.7 miles south-east). Not far away are Warley Place.
What happens on the day
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes a few hours per window, depending on the condition of the joints in most cases. For a village or hamlet like Coxtie Green, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
Get a quote
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we will take it from there.
Read more
Coxtie Green questions
Do you work for landlords with property near Brentwood station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Is Coxtie Green within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
How much does sand mastic cost in Coxtie Green?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
How long does sand mastic take?
That depends on how much there is to do, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We will give you a better idea when we quote.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Can sand mastic be painted?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
How long does sand mastic take to go off?
It takes a while. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Timber that has rotted
- Masonry that needs repairing
- Whether work needs listed building consent
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Period & listed homes
- Tenement windows
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
Keeping the joints in good condition
After the cure time, these simple habits help:
- Renew mastic before redecorating the windows
- Don’t paint over the new mastic
- Keep modern sealant off the mastic
- Check the mastic when you check the paintwork
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Why deal with it now?
If you are redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Around Coxtie Green, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
What you get with us
- Over 20 years’ experience
- An ARBOMaster approved applicator
- Every job guaranteed for a year
- 180+ five-star Google reviews
See our cost guide and our reviews.
Landlords, agents and businesses in Coxtie Green
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.