Essex · England
Stebbing Window Mastic
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Stebbing. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Untidy mastic left by window fitters
- Damp patches on the reveal after heavy rain
- Hard, cracked sealant around windows
Window mastic in Stebbing, done properly
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on aluminium frames, timber windows & doors and window sills, and the jobs we see most are cracked sealant at the sill ends and untidy mastic left by window fitters.
Somewhere as small as Stebbing, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
You are covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Location
- Stebbing (CM6)
- Wider area
- Essex
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in Stebbing
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. Older cottages and farmhouses around Stebbing can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Why book with us
- Fully insured
- Tidy, careful work
- Experience in homes, commercial sites and hotels
- 20+ years of sealant experience
Read how sealant jobs are priced and customer reviews.
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- A sash or casement that won’t close properly
- Rotten timber, which needs a joiner first
- Condensation trapped between the panes
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Surfaces we seal
- Patio & French doors
- Timber windows & doors
- Composite doors
- Aluminium frames
- uPVC windows
- Window sills
DIY versus a professional finish
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Towns and villages near Stebbing
Other services in Stebbing
Aftercare tips
To keep the joints looking good and working properly:
- Repaint timber before it’s bare
- Make sure the drainage slots aren’t blocked
- Walk round the house once a year and look at the joints
- Do not paint over the silicone
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
What window mastic looks like in Stebbing
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around United Reformed Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Stebbing is about 6 miles west of Braintree, in Essex. Our applicators cover window mastic for homes and businesses in Stebbing and nearby. 644 places in Essex are on our list, large and small. There’s also a page for Chelmsford, about 11 miles away.
Here we cover the CM6 postcode area for window mastic. Window mastic is available to properties on High Street, Ploughmans Way and Mount Fields. If you are just outside Stebbing, we cover Brookstreet (2 miles south), Little Dunmow (2 miles south), Blake End (3 miles south-east), Felsted (3 miles south) and Watch House Green (3 miles south-east). Within a short drive, we also cover Chelmsford (11 miles south), Braintree (6 miles east), Harlow (15 miles south-west), Witham (12 miles south-east), Saffron Walden (11 miles north-west) and Halstead (10 miles east).
Around Stebbing
Typical jobs here are in homes near White Hart pub and Putteridge High School, among other places. Nearby you’ll also find Little Easton Moat (3.5 miles west) and Braintree Community Hospital (5.5 miles east).
The process
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a few frames, or a day or more for a whole house. Somewhere like Stebbing needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Clear items away from the joints we are working on
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or email us.
Related advice
Common questions in Stebbing
Is there a guarantee on window mastic in Stebbing?
All our work, in Stebbing and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is Stebbing in your area for window mastic?
Yes. We work across London and the South East, and Stebbing is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will send you a clear quote.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available, so the joint suits the frame.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Can you do the inside joint as well?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
How long will my window job take?
Allow a few hours for a few frames, or a day or more for a whole house. Access and how stubborn the old mastic is affect the time most.
How we quote for window mastic
There’s no set price list. What we look at:
- Mould in or behind the old joints
- Access and height
- The old material and how stubborn it is
- The number and length of the joints
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What we need to know
To make quoting easier, let us know:
- Any previous sealing or DIY work
- Roughly how big the job is
- A few photos by email, if you can
- Where the property is
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.
When to call us in Stebbing
Sills take more water than any other part of a window, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
If you can see any of these, it’s time to have the joints looked at:
- Black, perished sealant on frames
- Draughts coming in around windows and doors
- Cracked internal joints between frame and plaster
- Cracked sealant at the sill ends
Schools such as Stebbing Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- How long to leave it before use
- Are they insured?
- Whether VAT is included
- Whether the sealant suits the joint