Kent · England
Bossingham Sand Mastic
Sand mastic in Bossingham from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Open joints round the window box
- Gaps round a timber door in stone or brick
- Cement or filler used on old window joints that has cracked
Do you need sand mastic in Bossingham?
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
It’s worth asking for a quote if you see:
- Silicone on a period window that looks wrong
- Wind and rain getting in round a sash window
- Open joints round the window box
- Gaps round a timber door in stone or brick
If you live in an older home near Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
What your quote should include
- The length of the guarantee
- Are they insured?
- How hidden problems are handled
- Whether all the old sealant comes out first
Sand mastic in Bossingham, done properly
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. We work on period & listed homes, stone surrounds and timber door frames, and people most often call us about gaps between timber frames and stone or brick and weathered mastic on the most exposed windows.
Homes in small places like Bossingham often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Bossingham (CT4)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Bossingham
Also in Bossingham
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Get any rot dealt with first
- Make sure water runs off the sill
- Don’t paint over the new mastic
- Inspect the joints round the windows every year or so
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Bossingham: your questions answered
Will you come out to Bossingham?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Bossingham for sand mastic?
Yes. Our work covers London and the South East, and Bossingham is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
Do you have insurance?
Yes. Mr Mastic is fully insured.
Is it OK to seal over 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.
Can I do it myself?
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.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
When it is not the sealant
We won’t take on work that will not last, so these are the limits:
- Sashes that rattle, stick or won’t open
- Cracked or broken glass
- Crumbling stone or brickwork round the window
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Period & listed homes
- Stone surrounds
- Brick reveals
- Sash and case windows
- Tenement windows
- Timber door frames
Windows and doors in Bossingham
London and the South East are among the drier parts 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 Acrise Place (about 4.9 miles south-east) nearby, there’s older building stock in the area around Bossingham 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.
Rented homes near Chartham station change hands often, and any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Stelling Minnis Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Bossingham is about 6 miles south of Canterbury, in Kent. Bossingham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Bossingham is one of 922 towns and villages in Kent where we work for sand mastic. There’s also a page for Chelmsford, about 45 miles away.
Jobs for sand mastic in CT4 is quoted and booked the same way as anywhere else. That includes homes and businesses on The Street, Bossingham Street and Manns Hill. Nearby, we also carry out sand mastic in Stelling Minnis (1 mile south-west), Waltham (2 miles west), Rhodes Minnis (4 miles south), Stowting Common (4 miles south-west) and Ottinge (4 miles south). Further out, we also cover Ashford (10 miles south-west), Canterbury (6 miles north), Dover (10 miles south-east), Folkestone (9 miles south-east), Whitstable (11 miles north) and Deal (14 miles east).
Local landmarks in Bossingham
For rail, the closest station is Chartham station, about 4.8 miles north-west. A little further out are Kent and Canterbury Hospital (4.7 miles north).
What the job involves on each surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Why it’s worth doing now in Bossingham
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Around Bossingham, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why Bossingham clients choose us
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
- Quality sealants from Arbo and Everbuild
- Tidy, careful work
Read our cost guide or customer reviews.
The process
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Bossingham, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Move anything stored near the joints
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or drop us an email.