Kent · England
Fant Window Mastic
Window mastic across Fant and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Mastic that has split away from the wall
- White mastic on grey or black frames
- Gaps between the frame and the inside reveal
Why deal with it now?
Resealing frames is a short job: it takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. In an older home around Fant, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
What you get with us
- Anti-fungal silicone where joints get wet
- We agree the colour with you first
- More than 20 years in sealant work
- 12-month guarantee on every job
See our cost guide or what customers say.
How we handle window mastic in Fant
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We are often asked to deal with rushed sealant from a window installation and old mastic that has gone black or come away, on timber windows & doors, aluminium frames and patio & French doors.
Homes around Fant range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Fant (ME16, ME15)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes most of a day for a typical house, less for a few frames and we leave things clean and tidy. Parking around Fant is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Read more
Frames and glazing around Fant
With historic houses such as Stoneacre (about 3.9 miles east) nearby, there’s older building stock in the area around Fant as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as Parish Church of St Andrew, the joint between an old wall and a newer frame is generally the first place rain gets in. For landlords with property near East Farleigh station, renewing tired window mastic between tenants heads off draught and damp complaints.
Fant is about 2 miles west of Maidstone, in Kent. Our applicators cover window mastic for homes and businesses in Fant, as part of our work across Kent. Our area takes in 922 places across Kent, from the larger towns to small villages. There’s also a page for London, about 30 miles away.
Every address in ME16 and ME15 is covered for window mastic, from the main roads to the quietest streets. We cover properties on Fant Lane, Glebe Lane and Burns Road. Being close to the A26, Fant is simple for us to get to for window mastic. We also cover East Farleigh (1 mile south), Kettle Corner (1 mile south-west), Dean Street (1 mile south), Barming Heath (1 mile west) and Hoppers Corner (1 mile south-west). Within a short drive, we also cover Sittingbourne (12 miles north-east), Sevenoaks (13 miles west), Royal Tunbridge Wells (13 miles south-west), Gravesend (12 miles north-west), Tonbridge (10 miles south-west) and Northfleet (13 miles north-west).
Near you in Fant
Around Fant, our work takes us to homes and buildings near Oakwood Park Grammar School, The Bull Inn and St Augustine Academy, among other places. The nearest railway station is East Farleigh station, about 0.8 miles south. A little further out are Kent Fire Brigade Museum (1.2 miles south-east) and Fremlin Walk (1.4 miles north-east). For a walk, there’s Boxley Hills and Burham Down.
More services for Fant
How we quote for window mastic
We do not publish a price list. What we look at:
- The old material and how stubborn it is
- Mould in or behind the old joints
- When we can work, for business premises
- Whether the work is at height
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
When you call or email, these details help:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
What the job involves on each surface
Patio & French doors
Door frames take knocks and movement every time the doors are used. The sealant must cope with it, where a rigid one would crack.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. We cut it out, back any deep gaps and reseal properly.
Common questions in Fant
Will you come out to Fant?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do window mastic in Fant?
Yes. We work across London and the South East, and Fant is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do you work on first-floor windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote so we can plan the job.
Are you insured?
Yes. We’re fully insured for every job we do.
Can you match the sealant to my frames?
Usually, yes. Tell us the frame colour when you get in touch and we’ll use the nearest match.
Do you work for letting agents?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Keeping the joints in good condition
So the new joints stay in good condition:
- Air rooms to keep condensation down around windows
- Walk round the house once a year and look at the joints
- Use gentle cleaners on frames and sealant
- Keep jet washers away from the mastic
Most silicone sealants won’t take paint, so mention any painting plans before we start. There are paintable sealants for joints that need it.
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.
What we’re called out for in Fant
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, so it comes away long before its time.
Common reasons people contact us are:
- Hard, cracked sealant around windows
- Water coming in at the bottom corners of a door
- Sealant in the wrong colour for the frame
- Draughts coming in around windows and doors
Schools such as Jubilee Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
- How long to leave it before use
- What product goes in the joint