Kent · England
Sand mastic for sash & case windows in Bromley Green, Kent
Sand mastic across Bromley Green and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic worn away on windows facing the weather
- Wind and rain getting in round a sash window
- Open joints round the window box
About our sand mastic in Bromley Green
Sand mastic does not last for ever and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on brick reveals, period & listed homes and sash and case windows, and the jobs we see most are cracked mastic round a front door frame and failed mastic on an exposed elevation.
Homes in small places like Bromley Green often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Bromley Green (TN26)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Leave it or put it right?
Filling over old, loose mastic doesn’t last. We remove the loose material first so the new mastic stays put. Older cottages and farmhouses around Bromley Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why Bromley Green customers choose us
- Quality sealants from Arbo and Everbuild
- Rated 4.9 stars on Google
- Sanitary silicone with an anti-fungal additive in wet areas
- Approved under the ARBOMaster scheme
Read what affects the cost and what customers say.
What we are called out for in Bromley Green
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
Any of these means the joints need attention:
- Crumbling sand mastic round a window
- Tired mastic found when preparing windows for paint
- Modern sealant on a period surround
- Failed mastic on an exposed elevation
Godinton House, about 4.5 miles north, is one of the historic houses in the wider area around Bromley Green, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- Who turns up on the day
- Are they insured?
- Whether all the old sealant comes out first
- How hidden problems are handled
What we do, step by step
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes a few hours for a single window, longer for several, including the tidy-up. For a village or hamlet like Bromley Green, 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.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
Get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Read more
Bromley Green: your questions answered
Is Bromley Green in your area for sand mastic?
Yes, Bromley Green is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Do you cover smaller places like Bromley Green?
Yes. Bromley Green is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
What guarantee comes with the work?
Our 12-month guarantee covers every job, sand mastic included.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
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, and we’ll explain why.
Do you work for letting agents?
Yes, often. We can quote for several properties at once.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
How long does the job take?
As a guide, most jobs take a few hours per window, depending on the condition of the joints. Larger jobs naturally take longer, and we will tell you how long to expect.
What we cannot put right
To be straight with you, there are a few things sealant will not fix:
- Sashes that need overhauling
- Rotten sashes, sills or window boxes (a joiner’s job)
- Planning or listed building consent (your local planning authority decides)
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Bromley Green
- Timber door frames
- Tenement windows
- Brick reveals
- Stone surrounds
- Sash and case windows
- Period & listed homes
Windows and doors in Bromley Green
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. Historic houses like Godinton House (about 4.5 miles north) are a reminder that the area around Bromley Green has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
For landlords with property near Ham Street station, older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like John Wallis Academy? Then the mastic around its windows and doors needs looking after like any other building’s.
Bromley Green is about 3 miles south of Ashford, in Kent. Whether you’re in the middle of Bromley Green or further out, we cover sand mastic for every kind of property. Our area takes in 922 places across Kent, large and small. There’s also a page for Crawley, about 45 miles away.
Postcode districts we cover here for sand mastic: TN26. Whether your property is on Bromley Green Road, Ashford Road and Hamstreet Road or anywhere close by, our applicators can take on the job. We also cover the places around Bromley Green: Orlestone (1 mile south), Stone Cross (2 miles east), Hamstreet (2 miles south), Ruckinge (3 miles south-east) and Kenardington (3 miles south-west). Further out, we also cover Ashford (3 miles north), Folkestone (14 miles east), Faversham (15 miles north), Hythe (10 miles east), Davington (15 miles north) and Preston (15 miles north).
What’s near Bromley Green
The closest station to Bromley Green is Ham Street station, about 1.9 miles south of the centre. Well-known places in the area include Ashford Designer Outlet (3 miles north) and Woodchurch Village Life Museum (3.9 miles west). For a walk, there’s Orlestone Forest.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Make sure water runs off the sill
- Plan mastic work ahead of painting
- Inspect the joints round the windows every year or so
- Avoid patching sand mastic with silicone
Avoid painting over the new mastic, as traditional guidance advises. If you are redecorating, ask us first.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.