Kent · England

Window & door mastic in Alkham, Kent

Professional window mastic in and around Alkham, with every bit of old sealant taken out first and a 12-month guarantee.

  • Sealant in the wrong colour for the frame
  • Rushed sealant from a window installation
  • Cracked sealant at the sill ends

Window mastic near Alkham

Windows and doors in Alkham

Alkham is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. With historic houses such as Acrise Place (about 3.9 miles west) nearby, there’s older building stock in the area around Alkham as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.

Homes close to Church of St Anthony the Martyr include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Kearsney station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.

Alkham is about 3 miles west of Dover, in Kent. If you need window mastic in Alkham, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Kent from our Crawley base, Alkham included. Across Kent, we cover 922 places, and Alkham is one of them. Chelmsford is on our list too, about 52 miles from Alkham.

Here we cover the CT15 postcode area for window mastic. Window mastic is available to properties on Alkham Valley Road, Hogbrook Hill Lane and Newlyn's Meadow and the roads around them. If you are just outside Alkham, we cover South Alkham (1 mile south-west), Chalksole Green (1 mile north-west), Ewell Minnis (1 mile north), Wolverton (1 mile north-east) and Drellingore (1 mile south-west). Larger places within reach include Ashford (15 miles west), Canterbury (12 miles north-west), Dover (3 miles east), Folkestone (4 miles south-west), Deal (9 miles north-east) and Hythe (8 miles south-west).

Local landmarks in Alkham

In Alkham, that means homes and buildings near Sladden Wood. Alkham’s nearest station is Kearsney station, about 2.3 miles north-east. A little further out are Folkestone Castle (3.7 miles south-west) and Crabble Corn Mill (2.6 miles east). Not far away are Dover Western Heights and Sugar Loaf Hill.

Map of Alkham © OpenStreetMap contributors

About our window mastic in Alkham

Whether it’s one leaking patio door or every frame on the house, you’ll get a clear quote before we start. To get one, ring 0345 464 0079 or drop us an email with the number of frames and any access details. Typical jobs include cracked internal joints between frame and plaster and rushed sealant from a window installation, across patio & French doors, uPVC windows and aluminium frames.

Somewhere as small as Alkham, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.

Each job carries a 12-month guarantee, large or small.

Place
Alkham (CT15)
Wider area
Kent
Cover
One year on every job
Quote
A clear price before work begins
Phone
0345 464 0079
Updated
26 October 2026
Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter

How the job changes by surface

Patio & French doors

Heavy door frames can move more than windows. A flexible sealant copes with that.

Composite doors

If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We’ll tell you if that is what we find.

DIY versus a professional finish

Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.

If you’re 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.

Alkham questions

Do you cover smaller places like Alkham?

Yes. Alkham is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.

Does the coastal weather in Alkham affect outside sealant?

Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.

Will there be a smell?

It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.

Can you reach windows above the ground floor?

Generally, yes. We plan safe access before the job, so mention the height and anything in the way.

Are you an approved applicator?

Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.

What should I tell you?

Tell us what needs doing and where. If we need more, we will ask.

Can new window sealant be painted?

It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before we start.

Do you work for landlords and businesses?

Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across Kent.

Keeping the joints in good condition

How long the joints last depends on use and care. Here’s what we suggest:

  • Avoid blasting the frames with a pressure washer
  • Wash the frames with mild soapy water
  • Clear any debris from frame drain holes
  • Ventilate rooms so frames do not stay wet inside

Timber frames need their paint kept up, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.

Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.

For landlords and businesses

We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for.

Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

How the visit works

There isn’t much for you to do on the day. Show us the job and we will take it from there. The job generally takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. Somewhere as small as Alkham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  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. Deep gaps get closed-cell backing rod to set the depth.
  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.

Getting ready for the visit

  • Mention any parking rules near the property
  • Tell us about any water getting in
  • Mention any sign-in or site rules at work premises

Getting 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, and email pictures if that is easy.

Get a quick quote

Read more

How we quote for window mastic

Every job gets its own quote. These are the things that affect it:

  • How much old sealant there is and how hard it is to remove
  • How many rooms, windows or areas are involved
  • How easy the joints are to reach
  • Any mould that needs treating

Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we will go through it with you.

Asking for a quote

A few details help us give you an accurate quote. When you ask for a quote, tell us:

  • Where the job is, and your postcode
  • Pictures of the joints, sent by email
  • The problem you’ve noticed
  • Any access issues, like height or stairs

Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or email us with the details, and pictures are welcome.

What we can’t put right

New sealant can’t fix everything, and we’ll tell you before any work starts. Sealant won’t put right:

  • Condensation trapped between the panes
  • A door that needs adjusting, rehanging or new seals
  • A sash or casement that will not close properly

If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.

Where we work in Alkham

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