Kent · England
Sand Mastic in Bobbing
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Bobbing. Fully insured, ARBOMaster approved and guaranteed for a year.
- Crumbling sand mastic round a window
- Failed mastic on an exposed elevation
- A silicone bead on a sash window that spoils the look
About our sand mastic in Bobbing
Across Bobbing, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. We work on timber door frames, sash and case windows and tenement windows, and people most often call us about window mastic to renew ahead of painting and cement or filler used on old window joints that has cracked.
Around Bobbing, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Your job is guaranteed for a year, as with all our work.
- Where
- Bobbing (ME9)
- Region
- Kent
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
A little care helps the new joints last. We recommend:
- Avoid patching sand mastic with silicone
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Plan mastic work ahead of painting
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Also in Bobbing
Why deal with it now?
An open joint round the frame lets weather in. Left, water can reach the timber and the wall, so dealing with it now protects both. Older cottages and farmhouses around Bobbing can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why Bobbing customers choose us
- Domestic, commercial and hotel work
- Trusted Arbo and Everbuild sealants
- An ARBOMaster approved applicator
- 12-month guarantee on every job
See our cost guide and what customers say.
Frames and glazing around Bobbing
Bobbing is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Newington station, any sash windows need sound mastic to keep draughts and rain out. For an older house near a landmark such as Church of St Bartholomew, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Bobbing is about 2 miles west of Sittingbourne, in Kent. Jobs in Bobbing get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 922 places across Kent, from the larger towns to small villages. We also work in Chelmsford, around 28 miles away.
Every address in ME9 is covered for sand mastic, from the main roads to the quietest streets. Sand mastic is available to properties on Bobbing Hill, Cold Harbour Lane and Ladyfields Close. Other places close to Bobbing include Keycol (1 mile west), Chestnut Street (1 mile south-west), Danaway (1 mile south-west), Newington (1 mile west) and Oad Street (2 miles south-west). Larger places within reach include Maidstone (9 miles south-west), Gravesend (15 miles west), Whitstable (14 miles east), Faversham (8 miles east), Minster (7 miles north-east) and Kings Hill (14 miles south-west).
What’s near Bobbing
Around Bobbing, our work takes us to homes and buildings near Westlands School and the streets around them. For rail, the closest station is Newington station, roughly 1.4 miles west of the centre. A little further out are Court Hall Museum (1.4 miles east) and Bayford Court (1.9 miles east).
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- Working hours on commercial sites
- Whether the work is at height
- The product the joint needs
- How many areas need sealing
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Helping us quote
To make quoting easier, please include:
- If someone has resealed it before
- Whether it’s a home or a business
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
The process
We bring everything the job needs with us. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours for a single window, longer for several. For a village or hamlet like Bobbing, the journey is planned in advance: 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any previous sealing or DIY attempts
How to get a quote
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Advice
Work for landlords, hotels and businesses
Letting agents and landlords in Bobbing can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Questions from Bobbing
Do you cover smaller places like Bobbing?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Does the coastal weather in Bobbing affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Can sand mastic be painted?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right 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.
Signs you need sand mastic in Bobbing
Most of it is simply age. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
The problems people normally mention when they call are:
- Window mastic to renew ahead of painting
- Cracked mastic round a front door frame
- A silicone bead on a sash window that spoils the look
- Draughts and rain around sash boxes
Managing a site like Grove Park Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- Who turns up on the day
- What happens if they find a problem under the old sealant
- Whether they seal over old material or remove it
- What guarantee comes with the work