Kent · England
Window & door mastic in Eynsford, Kent
Window mastic across Eynsford and nearby, with every bit of old sealant taken out first.
- Damp patches on the reveal after heavy rain
- Cracked or shrunken mastic around the frame
- Cracked internal joints between frame and plaster
Window mastic for homes and businesses in Eynsford
Homes in Eynsford have every kind of window: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. Typical jobs include rain getting in at the frame or under the sill and a bead that doesn’t match the frame, on patio & French doors, uPVC windows and aluminium frames.
Somewhere as small as Eynsford, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Eynsford (DA4)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why deal with it now?
The work is quick compared with the damage it prevents: 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. Around Eynsford, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email and we will talk you through it.
Why choose Mr Mastic in Eynsford
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- White, clear, grey or another colour, product permitting
- We leave the area clean and tidy
See our cost guide and customer reviews.
How the job changes by surface
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Soft or decayed wood in the frame
- A sash or casement that will not close properly
- Penetrating damp from a failed cavity tray or render
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Composite doors
- Window sills
- Patio & French doors
How the visit works
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes a morning for a couple of windows and a door for a typical job. In a small place like Eynsford, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- 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.
How to prepare
- Move anything stored near the joints
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
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 arrange one, ring 0345 464 0079 or send us an email.
Read more
Aftercare tips
Aftercare is simple:
- Do not aim a pressure washer at the joints
- Air rooms to keep condensation down around windows
- Keep solvents and bleach off the sealant
- Keep paint and stain on wooden frames in good order
Silicone cannot generally be painted, so mention any painting plans before we start. There are paintable sealants for joints that need it.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
Landlords and letting agents in Eynsford can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Towns and villages near Eynsford
What else we do in Eynsford
Your questions about window mastic in Eynsford
Do you cover Eynsford for window mastic?
Yes, Eynsford is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
Do you work for landlords with property near Eynsford station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Does the work come with a guarantee?
Yes. Each job is covered for 12 months, inside or out.
Can resealing stop a draught around my window?
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.
How do I get a quote for window mastic in Eynsford?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Are you insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
What window mastic looks like in Eynsford
Rainfall in the South East is lower than in much 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 Lullingstone Castle (about 1 mile south-west) nearby, there’s older building stock in the area around Eynsford as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you look after a building such as The Anthony Roper Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of Saint Martin, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Eynsford station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Eynsford is about 5 miles east of Orpington, in Kent. Homes, rented property, offices and hotels in Eynsford is covered for window mastic, old or new, large or small. The work is guaranteed for a year. Across Kent, we cover 922 places, Eynsford among them. London is on our list too, about 16 miles from Eynsford.
We cover every part of DA4 for window mastic. You’ll find streets such as Station Road, High Street and Edwards Court. If you are just outside Eynsford, we cover Farningham (1 mile north-east), Maplescombe (1 mile south-east), Horton Kirby (2 miles north-east), East Hill (2 miles south-east) and Speed Gate (2 miles east). Larger places within reach include Maidstone (15 miles south-east), Dartford (5 miles north), Sevenoaks (6 miles south), Gravesend (8 miles north-east), Tonbridge (12 miles south) and Northfleet (7 miles north-east).
Around Eynsford
We work in homes and buildings around The Malt Shovel pub and the streets around them. For rail, the closest station is Eynsford station, about 0.5 miles south-west of the centre. Well-known places in the area include Eynsford Castle (within half a mile north) and Darenth Park Hospital (5.1 miles north-east). Not far away are The Warren.
How we quote for window mastic
Call for a quick quote. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- How many areas need sealing
- The size of the job
- How easy the joints are to reach
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- How we’d reach the joints
- If someone has resealed it before
- The address or postcode of the job
- Whether it’s a home or a business
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, ring 0345 464 0079 or email us.