Kent · England
Sand mastic for sash & case windows in Broadstone, Kent
Problem with your window and door surrounds in Broadstone? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Cement or filler used on old window joints that has cracked
- Crumbling sand mastic round a window
- Mastic round period door frames that has failed
Different surfaces, different methods
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
How we handle sand mastic in Broadstone
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. If you have draughts and rain around sash boxes and failed mastic on an exposed elevation, we can put it right, on sash and case windows, tenement windows and brick reveals alike.
Homes in small places like Broadstone 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.
A 12-month guarantee comes as standard, so you are covered after we’ve gone.
- Where
- Broadstone (ME17)
- Region
- Kent
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
Aftercare is simple:
- Avoid heavy scraping on the mastic joint
- Keep modern sealant off the mastic
- Ask a joiner to look at soft timber first
- Look over the window mastic once a year
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
FAQs for Broadstone
Do you cover smaller places like Broadstone?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Broadstone for sand mastic?
Yes. Our work covers London and the South East, and Broadstone is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
How do I get a quote for sand mastic in Broadstone?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before any work starts.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Also near Broadstone
More services for Broadstone
What affects the cost of sand mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- Any working-time requirements on site
- The old material and how stubborn it is
- The amount of work
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- Any previous sealing or DIY work
- Where the job is, and your postcode
- Whether it’s a home or a business
- Pictures of the joints, sent by email
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear quote.
What we do, step by step
When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Broadstone needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided 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.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
Ask for a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Advice
When to call us in Broadstone
Shallow joints are a common cause. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
These are the problems we are asked about most:
- Window mastic to renew ahead of painting
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
- Mastic dropping out of the joint
Leeds Castle, about 3.7 miles north-west, is one of the historic houses in the wider area around Broadstone, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- Whether they’re fully insured
- What happens if the job turns out different
- Is VAT in the price?
- Which colour the sealant will be
Leave it or put it right?
Filling over old, loose mastic does not last. We remove the loose material first so the new mastic stays put. Around Broadstone, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why choose Mr Mastic in Broadstone
- Every job guaranteed for a year
- 4.9 on Google from 180+ five-star reviews
- Trusted Arbo and Everbuild sealants
- 20+ years of sealant experience
Take a look at how sealant jobs are priced or what customers say.
Landlord and commercial work in Broadstone
Landlords and letting agents in Broadstone 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.
If you manage several properties in or around Broadstone, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Broadstone homes and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Leeds Castle (about 3.7 miles north-west) nearby, there’s older building stock in the area around Broadstone as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Lenham station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Broadstone is about 8 miles south-east of Maidstone, in Kent. Jobs in Broadstone get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 922 towns and villages across Kent, large and small. You can also see our page for Crawley, about 38 miles away.
Our applicators cover all of ME17 for sand mastic. If you need sand mastic at a property on Boughton Park, Headcorn Road and Eastwood Road or a nearby road, we can help. Nearby, we also carry out sand mastic in Eastwood (1 mile north-west), Grafty Green (1 mile north-east), Liverton Street (1 mile north-east), Boughton Malherbe (1 mile north-east) and Ulcombe (1 mile north-west). We also work in nearby towns such as Maidstone (8 miles north-west), Ashford (10 miles south-east), Sittingbourne (10 miles north), Faversham (12 miles north-east), Kings Hill (12 miles north-west) and Davington (12 miles north-east).
Local landmarks in Broadstone
Locally, jobs take us to homes and businesses close to The Kings Head Public House and the streets around them. The closest station to Broadstone is Lenham station, roughly 2.9 miles north-east of the centre. Other landmarks nearby include Coldbridge Castle (1.2 miles east) and The Dog Collar Museum (3.6 miles north-west).