Kent · England

Window & door mastic in Dungate, Kent

Window and door frames in Dungate need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.

  • Gaps left after new windows were fitted
  • Draughts coming in around windows and doors
  • Rain getting in at the frame or under the sill

Book window mastic in Dungate

About our window mastic in Dungate

From a single sill to a whole house of windows, the work is priced before anything is done. To get one, call 0345 464 0079 or drop us an email with the number of frames and any access details for window mastic in Dungate. Common call-outs are for leaking joints at the ends of sills and gaps left after new windows were fitted, on patio & French doors, composite doors and timber windows & doors.

Around Dungate, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.

All our work comes with a one-year guarantee.

Applicator reaching up to seal an external door frame on a sunny day
Place
Dungate (ME9)
Wider area
Kent
Guarantee
12 months on all our work
Quotes
Quoted before any work starts
Phone
0345 464 0079
Updated
26 October 2026

Frames and glazing around Dungate

With historic houses such as Belmont House and Gardens (about 4.6 miles south-east) nearby, there’s older building stock in the area around Dungate as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

If you live in an older home near Church of St Catherine, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Milstead and Frinsted Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Sittingbourne station, renewing tired window mastic between tenants heads off draught and damp complaints.

Dungate is about 3 miles south of Sittingbourne, in Kent. Our applicators cover window mastic for homes and businesses in Dungate, as part of our work across Kent. 922 places in Kent are on our list. Our Chelmsford page covers work nearby (32 miles or so).

Jobs for window mastic in ME9 works the same way as everywhere else we cover. Neighbouring places we cover for window mastic include Newbury (1 mile north-east), Kingsdown (1 mile east), Rodmersham Green (1 mile north), Highsted (1 mile north) and Bapchild (1 mile north-east). Larger places within reach include Maidstone (10 miles west), Ashford (12 miles south-east), Canterbury (14 miles east), Sittingbourne (3 miles north), Whitstable (13 miles east) and Faversham (6 miles east).

What’s near Dungate

We work in homes and buildings around Fulston Manor School and Cromers Wood and the streets around them. For rail, the closest station is Sittingbourne station, roughly 2.9 miles north of the centre. Other landmarks nearby include Sittingbourne Heritage Museum (2.6 miles north) and Newnham Castle (2.5 miles south-east).

Map of Dungate © OpenStreetMap contributors

DIY versus a professional finish

If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.

What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.

How the job changes by surface

Patio & French doors

The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so they get particular care.

Timber windows & doors

On period timber windows, traditional sand mastic is sometimes the better choice. We can talk through the options.

What affects the quote in Dungate

There’s no set price list, because no two jobs are the same. What we look at:

  • Whether the work is at height
  • When we can work, for business premises
  • How much old sealant there is and how hard it is to remove
  • Which sealant suits the joint

Leaving a failed joint generally makes the job bigger, not smaller. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we will give you an honest view and a quote.

Helping us quote

There’s no need for technical detail. Just tell us:

  • If someone has resealed it before
  • Roughly how big the job is
  • What’s wrong with the joints now
  • Where the property is

Need a quote? Please call 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.

Leave it or put it right?

Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic generally deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we’ll say so. In a small place like Dungate, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.

Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.

Why book with us

  • Arbo and Everbuild products
  • Every job guaranteed for a year
  • More than 20 years in sealant work
  • Domestic, commercial and hotel work

See our cost guide and what customers say.

FAQs for Dungate

Is Dungate in your area for window mastic?

Yes. Our work covers London and the South East, and Dungate is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.

Can you help a landlord with a rental near Sittingbourne station?

Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.

What does window mastic cost?

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.

Do you seal inside as well as outside?

Yes. Draughts often come through the inside gap too, so it can be worth sealing both.

Can you do upstairs windows?

Yes, in most cases. Access is planned before we start.

Can you match the sealant to my frames?

Normally, yes. Mention the frame colour when you ask for a quote and we will use the nearest match.

Where are you based?

We’re based in Crawley, and we cover South East England, London and all of Scotland.

Will new mastic stop draughts?

Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.

What we do, step by step

All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take most of a day for a typical house, less for a few frames. In a small place like Dungate, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. First, we go round the frames with you and agree the list.
  2. The old mastic is cut out and scraped back to clean surfaces.
  3. Where the gap is deep, backing rod goes in first.
  4. A flexible exterior sealant is applied in a colour to suit the frame.
  5. Every joint is tooled smooth and checked before we leave.

Before we arrive

  • Tell us about access, such as stairs, a lift or high-level joints
  • Tell us about any water getting in
  • Let us know about earlier repairs to the joints

Get a quote

The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.

Get a quick quote

Related advice

Keeping the joints in good condition

Joint life depends on how it’s used and looked after. Here’s what we suggest:

  • Air rooms to keep condensation down around windows
  • Avoid harsh chemicals near the mastic
  • Do not paint over the silicone
  • Wash the frames with mild soapy water

Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.

On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.

Honest limits

A few problems are outside what sealant work can do:

  • Broken hinges, locks or handles
  • Damp problems in the wall away from the window
  • Misting between the panes of a double-glazed unit (that needs a new unit)

If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.

What we seal

  • Window sills
  • Aluminium frames
  • Composite doors
  • Timber windows & doors
  • uPVC windows
  • Patio & French doors
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job