Kent · England
Window & door mastic in Dargate, Kent
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Dargate. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- White mastic on grey or black frames
- Black, perished sealant on frames
- Untidy mastic left by window fitters
Windows and doors in Dargate
Dargate is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Hernhill Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. Rented homes near Selling station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Dargate is about 4 miles south-west of Whitstable, in Kent. Jobs in Dargate get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 922 places in Kent are on our list, large and small. For nearby work, see our Chelmsford page, about 36 miles away.
All of ME13 is covered for window mastic, from the main roads to the quietest streets. You’ll find streets such as Butler's Hill and Plumpudding Lane. Nearby, we also carry out window mastic in Hernhill (1 mile south-west), Waterham (1 mile north), Highstreet (1 mile north-east), Slutshole (1 mile south-west) and Staplestreet (1 mile south-west). Within a short drive, we also cover Ashford (13 miles south), Canterbury (5 miles south-east), Sittingbourne (11 miles west), Whitstable (4 miles north-east), Faversham (4 miles west) and Herne Bay (8 miles north-east).
Local landmarks in Dargate
Locally, jobs take us to homes and businesses close to Red Lion pub and Mount Ephraim Gardens and the streets around them. For rail, the closest station is Selling station, roughly 3 miles south-west. Well-known places in the area include Whitstable and Tankerton Hospital (4.5 miles north-east) and Tankerton Castle (4.2 miles north-east). The countryside around Dargate includes Blean Woods RSPB Reserve.
About our window mastic in Dargate
Frames and walls do not move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We work on timber windows & doors, window sills and aluminium frames, and common reasons people get in touch are mastic that’s falling out in pieces and cracked or shrunken mastic around the frame.
Outdoor sealant needs dry, clean surfaces, so work on frames around Dargate is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
All our work comes with a 12-month guarantee.
- Place
- Dargate (ME13)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Dargate
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and the wood moves with damp as well as heat.
People normally contact us after spotting something like this:
- Draughts coming in around windows and doors
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
- Leaking joints at the ends of sills
For an older house near a landmark such as Church of St Michael, the joint between an old wall and a newer frame is generally the first place rain gets in.
What your quote should include
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- Whether you can choose the colour
- The length of the guarantee
Places near Dargate
More services for Dargate
When it isn’t the sealant
We won’t take on work that won’t last, so these are the limits:
- Worn gaskets, brush seals or a door that has dropped
- Rotten timber, which needs a joiner first
- Damp problems in the wall away from the window
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Window sills
- Aluminium frames
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Composite doors
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Do not aim a pressure washer at the joints
- Keep drainage slots and sill grooves clear
- Avoid harsh chemicals near the mastic
- Clean frames with a soft cloth and soapy water
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
Leaks generally show up in wet, windy weather, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
What we do, step by step
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and clear up. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Dargate needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
- On commercial sites, let us know about site rules
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or drop us an email.
Advice
What affects the quote in Dargate
The price is agreed before any work begins. It takes into account:
- Access and height
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
- The number and length of the joints
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll go through it with you.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Whether it’s a home or a business
- Photos by email, if that’s easy
- The address or postcode of the job
- Whether it has been sealed before
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details, and pictures are welcome.
Dargate: your questions answered
Does living near the coast affect window mastic in Dargate?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like Dargate?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that’s a different fix, and we will say so.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
What do you need from me for a quote?
A short description and the location, plus photos if you have them. We’ll ask anything else we need to know.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can you do upstairs windows?
Usually, yes. We plan safe access before the job.
For landlords and businesses
For anyone letting property in or around Dargate, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Why it’s worth doing now in Dargate
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we’ll tell you. Where a wall is exposed, as many are in small places like Dargate, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why Dargate clients choose us
- We never seal over old sealant
- Colour agreed with you before work begins
- We leave the area clean and tidy
- Anti-fungal silicone where joints get wet
Take a look at what affects the cost and what customers say.