Kent · England

Window Mastic in Chevening

Problem with your window and door frames in Chevening? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.

  • Water coming in at the bottom corners of a door
  • Untidy mastic left by window fitters
  • Cold air getting in at the frame edge

Need window mastic in Chevening?

Window mastic in Chevening, done properly

Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. Just call 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached for window mastic in Chevening. We work on aluminium frames, uPVC windows and timber windows & doors, and the jobs we see most are old mastic that has gone black or come away and gaps where the sill meets the wall.

Outdoor sealant needs dry, clean surfaces, so work on frames around Chevening is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.

You get a 12-month guarantee, the same in Chevening as everywhere else we work.

Location
Chevening (TN14)
Region
Kent
Guarantee
A year, on every job
Quotes
A clear price before work begins
Call
0345 464 0079
Page updated
26 October 2026
Applicator reaching up to seal an external door frame on a sunny day

Questions from Chevening

I let a flat near Dunton Green station. Can you help?

Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.

Can you do window mastic in Chevening?

Yes, Chevening is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.

Do you work for hotels and businesses?

Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.

Can you do upstairs windows?

Yes, where they can be reached safely. Let us know about access when you ask for a quote and we will plan for it.

How long does it take to reseal the windows on a house?

The work takes a few hours for a handful of frames, longer for a whole house. Access and how stubborn the old mastic is affect the time most.

Can you quote for more than one area?

Of course. Doing several areas at once is usually more efficient.

Do I have to be there?

For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.

Is it messy?

Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.

For landlords and businesses

In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.

Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.

Different surfaces, different methods

Aluminium frames

Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.

Timber windows & doors

Where timber has rotted at the joint, it needs repairing first. If we find rot, we’ll tell you before going ahead, as that’s a job for a joiner.

Why act early in Chevening

Choosing the product is half the job. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Older cottages and farmhouses around Chevening can have timber floors and frames, where water from a failed joint can cause rot if it’s left.

What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.

Why us?

  • Tidy, careful work
  • Fully insured
  • A 12-month guarantee on all work
  • A sealant colour to suit the surroundings

Take a look at our cost guide or customer reviews.

DIY versus a professional finish

A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.

Window mastic in Chevening: local notes

With historic houses such as Quebec House (about 3.3 miles south-west) nearby, there’s older building stock in the area around Chevening 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.

Schools such as Combe Bank School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Dunton Green station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For an older house near a landmark such as Church of St Botolph, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.

Chevening is about 3 miles north-west of Sevenoaks, in Kent. We provide window mastic to homes and businesses in Chevening and nearby, as part of our work across Kent. Chevening is one of 922 towns and villages in Kent we cover for window mastic. London is on our list too, about 17 miles from Chevening.

Jobs for window mastic in TN14 is quoted and booked the same way as anywhere else. Neighbouring places we cover for window mastic include Chipstead (1 mile south-east), Sundridge (2 miles south), Dunton Green (2 miles east), Bessels Green (2 miles south-east) and Riverhead (2 miles south-east). Further out, we also cover Dartford (11 miles north), Sevenoaks (3 miles south-east), Royal Tunbridge Wells (13 miles south-east), Gravesend (14 miles north-east), Tonbridge (9 miles south-east) and Northfleet (13 miles north-east).

Around Chevening

We work in homes and buildings around Trinity School and the streets around them. For rail, the closest station is Dunton Green station, about 1.7 miles east. A little further out are Sevenoaks Hospital (2.8 miles east) and Kemsing Castle Bank (4.2 miles east). Not far away are Dryhill Nature Reserve and Betsom's Hill.

Map of Chevening © OpenStreetMap contributors

When something else is needed

Before you book, it’s worth knowing the limits too:

  • Misting between the panes of a double-glazed unit (that needs a new unit)
  • Worn gaskets, brush seals or a door that has dropped
  • A sash or casement that won’t close properly

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

Joints and surfaces we work on

  • Composite doors
  • Timber windows & doors
  • uPVC windows
  • Aluminium frames
  • Patio & French doors
  • Window sills

Keeping the joints in good condition

No joint lasts for ever, but care makes a real difference. Our tips:

  • Keep jet washers away from the mastic
  • Keep paint off silicone joints
  • Don’t use solvent cleaners on the joint
  • Walk round the house once a year and look at the joints

Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.

A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.

The process

At the end, we look at the finished work together. The visit itself generally takes a morning for a couple of windows and a door, depending on the amount of work. Somewhere as small as Chevening, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  1. We start by checking each window and door with you.
  2. The old mastic is cut out and the surfaces cleaned back.
  3. We fit backing rod in deep gaps so the sealant is the right depth.
  4. We apply a weatherproof sealant to match the frame and tool it neatly.
  5. Finally we tidy up and check each joint.

Getting ready for the visit

  • For indoor joints, keep the area dry beforehand if you can
  • Clear the area around the work
  • Mention any parking rules near the property

Ask for a quote

Need a quote? Please phone 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and send you a clear quote before any work starts.

Ask for a quote

Advice

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job