Essex · England
Great Leighs Window Mastic
Mastic around window and door frames, sills and patio doors for Great Leighs, backed by a one-year guarantee. Ask us for a quote.
- Mastic that has split away from the wall
- Whistling draughts around closed windows
- Water coming in at the bottom corners of a door
Landlords, agents and businesses in Great Leighs
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Landlords and letting agents in Great Leighs can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Window mastic for homes and businesses in Great Leighs
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We are ARBOMaster approved and fully insured, and every job is covered by a 12-month guarantee. If you have leaking joints at the ends of sills and whistling draughts around closed windows, we can help.
Somewhere as small as Great Leighs, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
All our work is covered by a 12-month guarantee.
- Place
- Great Leighs (CM3)
- Region
- Essex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Frames and glazing around Great Leighs
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.
Letting a property close to Cressing station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For site and facilities teams at buildings such as Great Leighs Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Great Leighs is about 4 miles south-west of Braintree, in Essex. If you need window mastic in Great Leighs, it’s easy to get a quote: please ring 0345 464 0079 or email us. We are based in Crawley and cover Essex. Our area takes in 644 places across Essex, large and small. You can also see our page for Chelmsford, roughly 6 miles from Great Leighs.
We cover every part of the CM3 postcode area for window mastic and the streets around it. Whether your property is on Aragon Road, Fortune Close and Audley Road or a nearby road, we can help. Neighbouring places we cover for window mastic include Gubbion's Green (1 mile east), Young's End (1 mile north-east), Fuller Street (1 mile south-east), Row Green (2 miles north-east) and Fairstead (2 miles east). Within a short drive, we also cover Chelmsford (6 miles south), Braintree (4 miles north-east), Maldon (10 miles south-east), Billericay (14 miles south), Witham (6 miles east) and Wickford (15 miles south).
Local landmarks in Great Leighs
Around Great Leighs, our work takes us to homes and buildings near The Castle pub and the streets around them. The closest station to Great Leighs is Cressing station, about 3.4 miles north-east. Nearby you will also find William Julien Courtauld Hospital (3.6 miles north-east). Not far away are Sandylay and Moat Woods.
Why deal with it now?
Redecorating is a good moment to renew the mastic. A clean new bead makes new paint or render look finished. Where a wall is exposed, as many are in small places like Great Leighs, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Why us?
- 12-month guarantee on every job
- Full insurance on every job
- Tidy, careful work
- Approved under the ARBOMaster scheme
Take a look at how sealant jobs are priced and what customers say.
Quotes for window mastic in Great Leighs
There’s no set price list. What we look at:
- Access and height
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
Combining jobs into one visit is generally more efficient than separate visits. We will give you a clear price for the lot.
Asking for a quote
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
- How many joints, rooms or windows are involved
- A few pictures by email, if you can
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Different surfaces, different methods
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so they get particular care.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We’ll tell you which suits your home.
Nearby places to Great Leighs
Other services in Great Leighs
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep drainage slots and sill grooves clear
- Ventilate rooms so frames do not stay wet inside
- Check the mastic once a year
- Keep paint off silicone joints
Silicone cannot generally be painted, so mention any painting plans before work begins. We can use a paintable sealant where that matters.
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 we’re called out for in Great Leighs
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. If the sealant can’t stretch, it splits.
The most common problems we see are:
- Gaps between the frame and the inside reveal
- Whistling draughts around closed windows
- Untidy mastic left by window fitters
- Mastic that is falling out in pieces
If you live in an older home near Church of St John the Evangelist, the joint between an old wall and a newer frame is generally the first place rain gets in.
Comparing quotes
- How the joint is cleaned and prepared
- How long to leave it before use
- How hidden problems are handled
- How much experience the applicator has
Great Leighs questions
Can you help a landlord with a rental near Cressing station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Is Great Leighs within the area you cover?
Yes. Great Leighs is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Will new mastic stop draughts?
Yes, where the draught is at the frame edge. We check where the draught is before we start.
Do you guarantee window mastic?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Can you reach windows above the ground floor?
Yes, where they can be reached safely. Let us know about access when you ask for a quote and we’ll plan for it.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Can I paint over the new sealant?
That depends on the product. Some hybrid sealants can be painted; silicone can’t. Tell us if you’re decorating and we’ll choose accordingly.
The process
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Great Leighs, the journey is planned in advance: 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 look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we’re working on
How to get a quote
We do not publish a price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.