Kent · England
Sand Mastic in Bicknor
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Bicknor and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Wind and rain getting in round a sash window
- Weathered mastic on the most exposed windows
- Patchy fillers round a sash window
Windows and doors in Bicknor
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Leeds Castle (about 3.7 miles south-west) are a reminder that the area around Bicknor has older buildings as well as new. 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 Church of St James, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you let a flat or house near Hollingbourne station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Bicknor is about 4 miles south-west of Sittingbourne, in Kent. From the centre of Bicknor to the outskirts, sand mastic is available for homes and businesses alike. Bicknor is one of 922 towns and villages in Kent we cover for sand mastic. You can also see our page for Chelmsford, roughly 32 miles from Bicknor.
Jobs for sand mastic in ME9 is quoted and booked the same way as anywhere else. Other places close to Bicknor include Hucking (1 mile west), Wormshill (1 mile south-east), Broad Street (2 miles south-west), Hollingbourne (2 miles south-west) and Eyhorne Street (3 miles south-west). Further out, we also cover Maidstone (6 miles west), Ashford (14 miles south-east), Sittingbourne (4 miles north-east), Faversham (9 miles east), Minster (10 miles north-east) and Kings Hill (12 miles west).
Near you in Bicknor
The closest station to Bicknor is Hollingbourne station, roughly 2.8 miles south-west. Nearby you’ll also find Leeds Castle (3.7 miles south-west) and KIMS hospital (4.9 miles west). Green spaces nearby include Detling Hill.
About our sand mastic in Bicknor
Sand mastic skins over fairly quickly but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. We work on stone surrounds, tenement windows and period & listed homes, and the jobs we see most are patchy fillers round a sash window and mastic round period door frames that has failed.
Outdoor sealant needs dry, clean surfaces, so work on frames around Bicknor is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Bicknor (ME9)
- Region
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
More services for Bicknor
What affects the cost of sand mastic
You will get a clear quote before we start. It takes into account:
- How many rooms, windows or areas are involved
- The size of the job
- Working hours on commercial sites
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
When you contact us, it’s useful to know:
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- The type of property
- The address or postcode of the job
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or email us.
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Common questions in Bicknor
Can you help a landlord with a rental near Hollingbourne station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is Bicknor in your area for sand mastic?
Yes. Our work covers London and the South East, and Bicknor is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we are done.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
What do you need from me for a quote?
Tell us what needs doing and where, plus photos if you have them. If we need more, we’ll ask.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Find out about consent before window work on a listed home
- Get any rot dealt with first
- Plan mastic work ahead of painting
- Look over the window mastic once a year
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
How the job changes by surface
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is usually favoured.
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
When something else is needed
Before booking, it’s worth knowing the limits:
- Timber that has rotted
- Sashes that rattle, stick or won’t open
- Masonry that needs repairing
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
How it works
We bring everything the job needs with us. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a single window, longer for several. Somewhere like Bicknor needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
Get a quote
For a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
Related advice
What happens if it’s left?
If you’re redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Where a wall is exposed, as many are in small places like Bicknor, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
Why book with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Approved under the ARBOMaster scheme
- Any old sealant cut out fully, not covered over
- Domestic, commercial and hotel work
Read how sealant jobs are priced or our reviews.