Kent · England
Luddesdown Window Mastic
Our applicators work in Luddesdown on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Mastic that is falling out in pieces
- Water coming in at the bottom corners of a door
- White mastic on grey or black frames
Surface by surface
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
Aluminium frames
Aluminium needs a sealant that bonds to coated metal, and acetoxy silicones aren’t used, as they can attack some metals. We use a neutral-cure product.
How we handle window mastic in Luddesdown
Most frames have an outside joint and an inside one. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. We work on timber windows & doors, aluminium frames and window sills, and common reasons people get in touch are rain getting in at the frame or under the sill and gaps where the sill meets the wall.
Outdoor sealant needs dry, clean surfaces, so work on frames around Luddesdown is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job, large or small.
- Where
- Luddesdown (DA13)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Luddesdown
Other services in Luddesdown
What we cannot put right
A few problems are outside what sealant work can do:
- A sash or casement that won’t close properly
- Condensation trapped between the panes
- Draughts through the window seals rather than the frame
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- uPVC windows
- Window sills
- Timber windows & doors
- Patio & French doors
- Aluminium frames
- Composite doors
How we quote for window mastic
Jobs vary more than people expect. What affects the quote:
- Whether the work is at height
- Which sealant suits the joint
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Asking for a quote
To help us quote quickly, please include:
- Roughly how big the job is
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- The address or postcode of the job
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Frames and glazing around Luddesdown
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Cobham College (about 1.2 miles north) nearby, there’s older building stock in the area around Luddesdown 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.
In the older streets around Parish Church of St Peter and St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. 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.
Luddesdown is about 4 miles south of Gravesend, in Kent. Anywhere in DA13, we can carry out window mastic at your property. Luddesdown is one of 922 towns and villages in Kent we cover. You can also see our page for London, about 23 miles away.
We cover every part of the DA13 postcode area for window mastic. We also cover Henley Street (1 mile north), Gold Street (1 mile north-west), Foxendown (1 mile west), Sole Street (1 mile north-west) and Round Street (2 miles north-west). Further out, we also cover Maidstone (9 miles south-east), Sittingbourne (15 miles east), Dartford (9 miles north-west), Sevenoaks (11 miles south-west), Gravesend (4 miles north) and Tonbridge (13 miles south-west).
Landmarks near Luddesdown
Typical jobs here are in homes near The Golden Lion pub and Camer Park Country Park, among other places. Luddesdown’s nearest station is Sole Street station, about 1.2 miles north-west. Nearby you’ll also find French Hospital (4.7 miles east) and Rochester Castle (4.6 miles east). Green spaces nearby include Ranscombe Farm and Gad's Hill.
Common problems we fix in Luddesdown
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, and it lets go sooner than it should.
People generally contact us when they notice one of these:
- Whistling draughts around closed windows
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
- Mastic that has split away from the wall
For site and facilities teams at buildings such as Meopham School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Which sealant they’ll use, and why
- What insurance they hold
- Whether VAT is included
- Who does the work, and how experienced they are
What we do, step by step
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. In a small place like Luddesdown, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
- Try not to wet indoor joints just before the visit
Ask for a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
Read more
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Why deal with it now?
Redecorating is a good moment to renew the mastic. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. In a small place like Luddesdown, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Luddesdown
- We agree the colour with you first
- Neat joints and a tidy finish
- Sealant colour chosen to suit
- ARBOMaster approved applicator
Take a look at our cost guide or customer reviews.
Common questions in Luddesdown
Is Luddesdown within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Sole Street station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Can you seal the gap between the frame and the plaster indoors?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We do one or both.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
Is it messy?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.