Kent · England
Boxley Window Mastic
Window mastic for Boxley and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Gaps left after new windows were fitted
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
Boxley: your questions answered
Do you work for landlords with property near Maidstone East station?
Yes. We work for landlords and agents as well as householders, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Is Boxley within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
How do I get a quote for window mastic in Boxley?
We don’t 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. We agree the price before any work begins.
What information do you need?
Let us know what needs doing and where, with photos by email if possible. If we need more, we will ask.
Can you reach windows above the ground floor?
Yes, in most cases. Access is planned before we start, so mention the height and anything in the way.
How long will my window job take?
The work takes a few hours for a few frames, or a day or more for a whole house. Access and the amount of old mastic make the biggest difference.
Can you seal the gap between the frame and the plaster indoors?
Yes. Inside, the joint between frame and plaster is sealed neatly.
Window mastic in Boxley
The new joint does not have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. Typical jobs include black, perished sealant on frames and a bead that doesn’t match the frame, on patio & French doors, uPVC windows and composite doors.
In a village or hamlet like Boxley, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Boxley (ME14)
- Region
- Kent
- Cover
- A year, on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a few frames, or a day or more for a whole house, and the area is left clean. In a small place like Boxley, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.
Advice
Window mastic in Boxley: local notes
With historic houses such as Stoneacre (about 4 miles south) nearby, there’s older building stock in the area around Boxley as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Maidstone East station? Then renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Sandling Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Boxley is about 3 miles north of Maidstone, in Kent. Every kind of property in Boxley is covered for window mastic, old or new, large or small. The work is guaranteed for a year. We cover 922 towns and villages across Kent, large and small. There’s also a page for Chelmsford, roughly 30 miles from Boxley.
Jobs for window mastic in ME14 works the same way as everywhere else we cover. Streets in the area include The Street, Styles Lane and Pilgrims Way, all of which we cover. If you are just outside Boxley, we cover Dunn Street (2 miles north-east), Lidsing (2 miles north-east), Kit's Coty (2 miles north-west), Lordswood (2 miles north) and Scragged Oak (2 miles north-east). Larger places within reach include Maidstone (3 miles south), Sittingbourne (9 miles east), Gravesend (11 miles north-west), Tonbridge (14 miles south-west), Faversham (15 miles east) and Northfleet (12 miles north-west).
Local landmarks in Boxley
Locally, jobs take us to homes and businesses close to Valley Park School, The King's Arms and The Larches. Boxley’s nearest station is Maidstone East station, about 2.2 miles south-west. Well-known places in the area include KIMS hospital (1.4 miles south) and Allington Castle (1.6 miles south-west). Green spaces nearby include Burham Down and Boxley Hills.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
If you manage several properties in or around Boxley, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Honest limits
New sealant can’t fix everything, and we will tell you before work begins. It won’t solve:
- A frame that has rotted at the joint
- Worn gaskets, brush seals or a door that has dropped
- A failed sealed unit that has misted up
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Boxley
- Window sills
- Aluminium frames
- Patio & French doors
- Composite doors
- uPVC windows
- Timber windows & doors
What we’re called out for in Boxley
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, and a gap filled solid can’t flex. Backing rod sets the right depth.
Most people get in touch when they notice something like this:
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
- A bead that does not match the frame
- Whistling draughts around closed windows
If you live in an older home near St Mary's and All Saints Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before you book
- Who does the work, and how experienced they are
- What preparation is included
- Is VAT in the price?
- What happens if the job turns out different
Why act early in Boxley
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. In a small place like Boxley, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not guesswork. That is why we ask about the job first and agree the price before starting.
Why choose Mr Mastic in Boxley
- You choose the colour before work begins
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- Arbo and Everbuild products
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Nearby places to Boxley
More services for Boxley
Different surfaces, different methods
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. Each is cleaned out and resealed.
Composite doors
Front doors take the weather head on. We pay most attention there.