Essex · England
Clavering Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Clavering and across Essex. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
- Mastic worn away on windows facing the weather
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
How we handle sand mastic in Clavering
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. If you have wind and rain getting in round a sash window and cement or filler used on old window joints that has cracked, we can help.
Around Clavering, 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.
Your job is guaranteed for a year, as with all our work.
- Location
- Clavering (CB11)
- Wider area
- Essex
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
To keep the joints looking good and working properly:
- Do not run silicone over sand mastic
- Find out about consent before window work on a listed home
- Leave the new mastic unpainted
- Plan mastic work ahead of painting
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.
Common problems we fix in Clavering
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint and we normally remove them.
The problems people generally mention when they call include:
- Wind and rain getting in round a sash window
- Crumbling sand mastic round a window
- Mastic worn away on windows facing the weather
- Gaps between timber frames and stone or brick
For landlords with property near Newport (Essex) station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- How the joint is cleaned and prepared
- How much experience the applicator has
- Is the old sealant removed completely?
- How the colour is chosen
Surface by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
How it works
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to a full day, depending on how many windows for a typical job. Somewhere as small as Clavering, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we are working on
Getting a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work.
Related advice
Frames and glazing around Clavering
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Clavering Primary School, larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around Church of St Mary and St Clement, the joint between an old wall and a newer frame is generally the first place rain gets in.
Clavering is about 6 miles south-west of Saffron Walden, in Essex. For sand mastic in and around Clavering, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Essex from our Crawley base. Clavering is one of 644 places in Essex where we work. You can also see our page for Chelmsford, about 21 miles away.
Here we cover the CB11 postcode area for sand mastic. We cover properties on High Street, Skeins Way and Chapel Close and the roads around them. Other places close to Clavering include Hill Green (1 mile north-east), Starling's Green (1 mile west), Berden (1 mile south), Wicken Bonhunt (2 miles north-east) and Arkesden (2 miles north-east). We also work in nearby towns such as Harlow (14 miles south), Saffron Walden (6 miles north-east), Great Dunmow (11 miles south-east), Stansted Mountfitchet (5 miles south-east), Newhall (13 miles south) and Elsenham (5 miles south-east).
What’s near Clavering
Typical jobs here are in homes near Fox And Hounds Inn and the streets around them. Clavering’s nearest station is Newport (Essex) station, roughly 3.3 miles east of the centre. Nearby you will also find Brent Pelham (2.9 miles west). Green spaces nearby include Aubrey Buxton Nature Reserve.
Places near Clavering
More services for Clavering
How we quote for sand mastic
Your quote is based on your job. We look at:
- Whether old sealant or filler has to be cut out
- The amount of work
- The number of rooms or windows
- The type of sealant required
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. You will know the price before we begin.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Roughly how big the job is
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
- Any access issues, like height or stairs
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
FAQs for Clavering
Will you come out to Clavering?
Yes, Clavering is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Newport (Essex) station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
Is it possible to take out silicone and use sand mastic instead?
Usually, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Are you fully insured?
Yes. We’re fully insured for domestic and commercial work.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
What does sand mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.