Kent · England
Window & door mastic in Eastwood, Kent
Mastic around window and door frames, sills and patio doors in Eastwood, with a 12-month guarantee on every job. Call for a quick quote.
- Gaps left after new windows were fitted
- Mastic that is falling out in pieces
- A bead that doesn’t match the frame
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
How we handle window mastic in Eastwood
Around Eastwood we seal all kinds of frames: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. If you are dealing with cracked sealant at the sill ends and gaps left after new windows were fitted, we can help, whatever the surface.
Mastic can only go onto a dry, clean joint, so window work in Eastwood is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Your job is guaranteed for a year, as with all our work.
- Place
- Eastwood (ME17)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Eastwood
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
If you manage several properties in or around Eastwood, several properties can go on one quote. Just tell us the addresses and what each one needs.
Why deal with it now?
Running fresh sealant over the old joint is tempting, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. Where a wall is exposed, as many are in small places like Eastwood, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why choose Mr Mastic in Eastwood
- Quality sealants from Arbo and Everbuild
- White, clear, grey or another colour, product permitting
- We agree the colour with you first
- Rated 4.9 stars on Google
Take a look at how sealant jobs are priced and customer reviews.
What happens on the day
On the day, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before any work starts. Most jobs take a morning for a couple of windows and a door. Somewhere like Eastwood needs a little journey planning: let us know about lanes, gates and parking. 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.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.
Related advice
When something else is needed
New sealant cannot fix everything, and we will tell you before we start. Sealant won’t put right:
- Soft or decayed wood in the frame
- A failed sealed unit that has misted up
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
Where we work in Eastwood
- Composite doors
- Patio & French doors
- Window sills
- Aluminium frames
- uPVC windows
- Timber windows & doors
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Use gentle cleaners on frames and sealant
- Air rooms to keep condensation down around windows
- Avoid blasting the frames with a pressure washer
- Walk round the house once a year and look at the joints
Silicone can’t generally be painted, so mention any painting plans before work begins. We can use a paintable sealant where that matters.
Leaks generally show up in wet, windy weather, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
Eastwood questions
Do you work for landlords with property near Harrietsham station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Can you do window mastic in Eastwood?
Yes. Our work covers London and the South East, and Eastwood is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we have agreed the job, you do not need to watch us work.
Do you seal inside as well as outside?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Can you reach windows above the ground floor?
Yes, if safe access is possible. For high or awkward windows, we’ll tell you what access is needed.
Is the new sealant paintable?
That depends on the product. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before we start.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Frames and glazing around Eastwood
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Leeds Castle (about 3.4 miles north-west) are a reminder that the area around Eastwood 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.
Rented homes near Harrietsham station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Leeds Castle, about 3.4 miles north-west, is one of the historic houses in the wider area around Eastwood, and older homes nearby need a sealant that suits their walls. Managing a site like Ulcombe Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Eastwood is about 7 miles south-east of Maidstone, in Kent. If you need window mastic in Eastwood, please call 0345 464 0079 or email us for a quick quote. We cover Kent from our Crawley base. Our Kent coverage runs to 922 places, and Eastwood is one of them. Our Crawley page covers work nearby.
All of ME17 is within our area for window mastic, from the main roads to the quietest streets. We also cover Broadstone (1 mile south-east), Grafty Green (1 mile east), Ulcombe (1 mile north-west), Fairbourne Heath (1 mile north) and Liverton Street (1 mile north-east). Further out, we also cover Maidstone (7 miles north-west), Ashford (10 miles south-east), Sittingbourne (10 miles north), Faversham (12 miles north-east), Kings Hill (12 miles north-west) and Davington (12 miles north-east).
What’s near Eastwood
Around Eastwood, our work takes us to homes and buildings near The Provender Public House, among other places. For rail, the closest station is Harrietsham station, roughly 2.8 miles north. Nearby you will also find The Dog Collar Museum (3.2 miles north-west) and Coldbridge Castle (1.6 miles east).
What affects the cost of window mastic
Call for a quick quote. What matters most is:
- How easy the joints are to reach
- Any mould that needs treating
- The product the joint needs
- The old material and how stubborn it is
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Asking for a quote
Before you ask for a quote, have a think about:
- How we’d reach the joints
- The address or postcode of the job
- The rough size of the job
- If it’s domestic, commercial or a hotel
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, phone 0345 464 0079 or drop us an email.