Kent · England
Henhurst Window Mastic
Mastic around window and door frames, sills and patio doors in Henhurst, with a one-year guarantee on every job. Ask us for a quote.
- Draughts coming in around windows and doors
- Old mastic that has gone black or come away
- White mastic on grey or black frames
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Soft or decayed wood in the frame
- A sash or casement that will not close properly
- A door that needs adjusting, rehanging or new seals
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- uPVC windows
- Timber windows & doors
- Aluminium frames
- Window sills
- Composite doors
- Patio & French doors
Window mastic in Henhurst
Behind a thin line of old mastic there’s sometimes a deep void. Filling it with sealant alone leaves a joint that can’t move properly, so we fit backing rod to set the right depth. That way the new bead bonds to the frame and the wall only. If you have sealant in the wrong colour for the frame and cracked or shrunken mastic around the frame, we can put it right.
Around Henhurst, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Where
- Henhurst (DA12)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for window mastic
You’ll get a clear quote before any work starts. It takes into account:
- Mould in or behind the old joints
- The size of the job
- Access and height
- When we can work, for business premises
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- Whether it’s a home or a business
- If someone has resealed it before
- Pictures of the joints, sent by email
Need a quote? Please call 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear quote before we start.
When to call us in Henhurst
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
The problems people usually mention when they call include:
- Untidy mastic left by window fitters
- Black, perished sealant on frames
- Cracked sealant at the sill ends
- Sealant in the wrong colour for the frame
If you live in an older home near Church of St Margaret, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Comparing quotes
- Whether you can choose the colour
- Who turns up on the day
- When the joint can take water or movement
- The length of the guarantee
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Landlords, agents and businesses in Henhurst
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 that we can handle for you.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Frames and glazing around Henhurst
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Cobham College (about 1 mile south-east) nearby, there’s older building stock in the area around Henhurst 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.
For landlords with property near Sole Street station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you look after a building such as Singlewell Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Henhurst is about 2 miles south of Gravesend, in Kent. Henhurst gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 922 places across Kent, from the larger towns to small villages. Our London page covers work nearby, about 22 miles away.
Work in DA12 is quoted and booked the same way as anywhere else. Close by, we work in Singlewell or Ifield (1 mile north-west), Istead Rise (1 mile west), Gravesend (2 miles north), Denton (2 miles north) and Northfleet Green (2 miles north-west). We also work in nearby towns such as Maidstone (11 miles south-east), Dartford (8 miles west), Sevenoaks (12 miles south-west), Tonbridge (15 miles south), Northfleet (3 miles north-west) and Swanley (9 miles west).
Around Henhurst
Locally, jobs take us to homes and businesses close to Jeskyns, The George Inn and Thamesview School, among other places. For rail, the closest station is Sole Street station, about 1.3 miles south of the centre. Well-known places in the area include Gravesham Museum (2.8 miles north) and Gravesham Community Hospital (3 miles north). For a walk, there’s Sawyers Lake and Gad's Hill.
What else we do in Henhurst
The process
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes most of a day for a typical house, less for a few frames in most cases. For a village or hamlet like Henhurst, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
Get a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
Related advice
How the job changes by surface
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.
Your questions about window mastic in Henhurst
Do you work for landlords with property near Sole Street station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover smaller places like Henhurst?
Yes, Henhurst is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.