Kent · England
Window & door mastic in Lunsford, Kent
Mastic around window and door frames, sills and patio doors for homes and businesses in Lunsford and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old mastic that has gone black or come away
- Cold air getting in at the frame edge
- Water coming in at the bottom corners of a door
Window mastic in Lunsford
The new joint doesn’t have to be white. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. We work on timber windows & doors, window sills and aluminium frames, and people most often call us about gaps left after new windows were fitted and cracked sealant at the sill ends.
Houses in smaller places like Lunsford can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
All our work is covered by a 12-month guarantee, wherever you are in Kent.
- Location
- Lunsford (ME20)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What affects the quote in Lunsford
For a quick quote, just ask. What matters most is:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- Access and height
- Working hours on commercial sites
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Pictures of the joints, sent by email
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or email us.
Why it’s worth doing now in Lunsford
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. Homes in smaller places like Lunsford can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
What it costs depends on how much there is to do, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Lunsford
- Every job guaranteed for a year
- Sealant colour chosen to suit
- Neat joints and a tidy finish
- White, clear, grey or another colour, product permitting
Take a look at how sealant jobs are priced or customer reviews.
How the visit works
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from an hour or two to a full day, depending on how many frames there are. Parking around Lunsford is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Before we arrive
- Tell us if parking is tricky
- Keep children and pets away from the work area
- Tell us about any water getting in
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or email us with the details.
Related advice
Common problems we fix in Lunsford
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, and a gap filled solid cannot flex. Backing rod sets the right depth.
Look out for these signs:
- Rushed sealant from a window installation
- Leaking joints at the ends of sills
- Old mastic that has gone black or come away
- Rain getting in at the frame or under the sill
Rented homes near New Hythe station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- What the quote includes, VAT included or not
- Is the old sealant removed completely?
- How much experience the applicator has
- Which sealant they’ll use, and why
Lunsford homes and the weather
With historic houses such as Starkey Castle (about 3.8 miles north) nearby, there’s older building stock in the area around Lunsford 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Church of the Holy Trinity, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For site and facilities teams at buildings such as Lunsford Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Lunsford is about 5 miles north-west of Maidstone, in Kent. If you need window mastic in Lunsford, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We’re based in Crawley and cover Kent. Lunsford is one of 922 places in Kent where we work for window mastic. Our London page covers work nearby.
We work across the ME20 postcode area for window mastic and the streets around it. That includes homes and businesses on Sassoon Close, Chaucer Way and Masefield Road. Neighbouring places we cover for window mastic include New Hythe (1 mile east), Larkfield (1 mile south), Leybourne (1 mile south-west), Snodland (1 mile north) and Birling (1 mile west). We also work in nearby towns such as Maidstone (5 miles south-east), Sittingbourne (13 miles east), Dartford (13 miles north-west), Sevenoaks (11 miles west), Royal Tunbridge Wells (14 miles south-west) and Gravesend (9 miles north).
Around Lunsford
We work in homes and buildings around Leybourne Lakes Country Park, The Malling School and The Holmesdale School and the streets around them. The nearest railway station is New Hythe station, about 0.7 miles east of the centre. Nearby you’ll also find Maidstone Hospital (3.2 miles south-east) and Leybourne Castle (0.9 miles south-west). Green spaces nearby include Blue Bell Hill and Burham Down.
FAQs for Lunsford
Is Lunsford in your area for window mastic?
Yes, Lunsford is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
Do you cover smaller places like Lunsford?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels across Kent.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
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. We’ll tell you how long your job needs when we quote.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured for the work.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
What sealant work can’t fix
In fairness, there are a few things sealant will not fix:
- Draughts through the window seals rather than the frame
- Rotten timber, which needs a joiner first
- A sash or casement that will not close properly
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Where we work in Lunsford
- Window sills
- Aluminium frames
- Patio & French doors
- Timber windows & doors
- Composite doors
- uPVC windows