Essex · England
Kelvedon Window Mastic
Mastic around window and door frames, sills and patio doors in Kelvedon, with a 12-month guarantee on every job. Call for a quick quote.
- Hard, cracked sealant around windows
- Sealant in the wrong colour for the frame
- Damp patches on the reveal after heavy rain
Window mastic in Kelvedon
Around Kelvedon we seal all kinds of frames: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on aluminium frames, window sills and uPVC windows, and common reasons people get in touch are a bead that doesn’t match the frame and whistling draughts around closed windows.
Around Kelvedon, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Kelvedon (CO5)
- Wider area
- Essex
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Kelvedon
Some jobs are bigger than they look, and some smaller. The main factors:
- How many areas need sealing
- Access and height
- The amount of work
- Mould in or behind the old joints
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email and we’ll talk you through it.
What we need to know
Before you ask for a quote, have a think about:
- Any access issues, like height or stairs
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or drop us an email.
How to look after the new joints
Aftercare is simple:
- Don’t use solvent cleaners on the joint
- Avoid blasting the frames with a pressure washer
- Do not paint over the silicone
- Clear any debris from frame drain holes
Most silicone sealants will not take paint, so mention any painting plans before work begins. We can use a paintable sealant where that matters.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Landlord and commercial work in Kelvedon
If you manage several properties in or around Kelvedon, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Window mastic in Kelvedon: local notes
Historic houses like Layer Marney Tower (about 4.2 miles east) are a reminder that the area around Kelvedon 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. 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.
For an older house near a landmark such as Parish Church of St Mary, the joint between an old wall and a newer frame is normally the first place rain gets in. Schools such as Kelvedon St Mary's Church of England Primary Academy are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Kelvedon is about 4 miles north-east of Witham, in Essex. Homes, rented property, offices and hotels in Kelvedon can book us for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 644 places across Essex, from the larger towns to small villages. Chelmsford is on our list too, around 11 miles away.
Jobs for window mastic in CO5 is quoted and booked the same way as anywhere else. Streets in the area include High Street, Church Road and Station Road, all of which we cover. We also cover Feering (1 mile north-east), Stocks Green (2 miles north-east), Windmill Hill (2 miles south-east), Messing (2 miles east) and Skye Green (2 miles north). Further out, we also cover Colchester (9 miles north-east), Chelmsford (11 miles south-west), Braintree (7 miles north-west), Maldon (8 miles south), Witham (4 miles south-west) and Camulodunum (8 miles north-east).
Local landmarks in Kelvedon
Around Kelvedon, our work takes us to homes and buildings near The George Inn, Parish Church of All Saints and Thurstable School Sports College and Sixth Form Centre and the streets around them. There’s a railway station in Kelvedon itself: Kelvedon station. Other landmarks nearby include Laundry & Mangle Museum (2.6 miles north-west). The countryside around Kelvedon includes Tiptree Heath Nature Reserve.
Signs you need window mastic in Kelvedon
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and the wood moves with damp as well as heat.
Keep an eye out for any of the following:
- A bead that does not match the frame
- Draughty joints inside around the window
- Hard, cracked sealant around windows
- Draughts coming in around windows and doors
Letting a property close to Kelvedon station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Before you book anyone
- Who does the work, and how experienced they are
- The length of the guarantee
- When the joint can take water or movement
- Whether they’re fully insured
How it works
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from an hour or two to a full day, depending on how many frames there are. In a smaller place like Kelvedon, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Let us know about earlier repairs to the joints
- Let us know about parking restrictions
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Related advice
Also near Kelvedon
What else we do in Kelvedon
What the job involves on each surface
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. The bead is colour-matched to the frame.
Why act early in Kelvedon
If you are painting or rendering, reseal at the same time. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. In an older home around Kelvedon, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why choose Mr Mastic in Kelvedon
- Sealant colour chosen to suit
- Neat joints and a tidy finish
- An ARBOMaster approved applicator
- A choice of colours where the product allows
See our cost guide and what customers say.
Kelvedon questions
Is Kelvedon within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Kelvedon station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Are you insured?
Yes, we are fully insured.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
How much does window mastic cost in Kelvedon?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.