Kent · England
Sand mastic for sash & case windows in Hawkenbury, Kent
We cover Hawkenbury for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Patchy fillers round a sash window
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
The process
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours for a single window, longer for several. Somewhere as small as Hawkenbury, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Keep children and pets away from the work area
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
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’ll talk you through what we’d do. Whenever you are ready, phone 0345 464 0079 or send us an email.
Advice
Sand mastic in Hawkenbury
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you have mastic dropping out of the joint and gaps round a timber door in stone or brick, we can put it right, on brick reveals, sash and case windows and tenement windows alike.
Homes in small places like Hawkenbury 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.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Hawkenbury (TN12)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Leave it or put it right?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Around Hawkenbury, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: 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.
Why Hawkenbury clients choose us
- Rated 4.9 stars on Google
- Sanitary silicone with an anti-fungal additive in wet areas
- ARBOMaster approved applicator
- Trusted Arbo and Everbuild sealants
See what affects the cost and our reviews.
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Don’t run silicone over sand mastic
- Look over the window mastic once a year
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
What we can’t put right
We will always be straight with you, so here’s what new sealant will not do:
- Crumbling stone or brickwork round the window
- Timber that has rotted
- Sashes that need overhauling
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Where we work in Hawkenbury
- Timber door frames
- Sash and case windows
- Tenement windows
- Stone surrounds
- Period & listed homes
- Brick reveals
Frames and glazing around Hawkenbury
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Staplehurst station, cracked sand mastic around sash windows lets in the draughts tenants complain about. In and around Hawkenbury, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Hawkenbury is about 7 miles south of Maidstone, in Kent. Across the TN12 area, our applicators can take on sand mastic. Hawkenbury is one of 922 places in Kent we cover. For nearby work, see our Crawley page, about 34 miles away.
Every address in TN12 is covered for sand mastic, from the main roads to the quietest streets. We also cover Farthing Green (1 mile north-east), Devil's Den (1 mile north), Staplehurst (1 mile south-west), Cross-at-Hand (2 miles north-west) and Sinkhurst Green (2 miles south). Larger places within reach include Maidstone (7 miles north), Ashford (13 miles east), Sittingbourne (13 miles north-east), Royal Tunbridge Wells (14 miles west), Tonbridge (13 miles west) and Kings Hill (10 miles north-west).
Local landmarks in Hawkenbury
Hawkenbury’s nearest station is Staplehurst station, about 1.3 miles west. Well-known places in the area include Brattle Farm Museum (2.4 miles south-west) and Sutton Valence Castle (2.6 miles north).
Hawkenbury: your questions answered
Is Hawkenbury within the area you cover?
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.
Can you help a landlord with a rental near Staplehurst station?
Yes. We work for landlords and letting agents as well as householders. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
How long will you be here?
That depends on how much there is to do, but most jobs take a few hours for a single window, longer for several. We’ll tell you when we quote.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will advise.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
How do I get a quote for sand mastic in Hawkenbury?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or email us and let us know what needs doing and where.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in.
What guarantee comes with the work?
All our work has a 12-month guarantee, and we’re fully insured.
Landlords, agents and businesses in Hawkenbury
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
If you manage several properties in or around Hawkenbury, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
Nearby places to Hawkenbury
Other services in Hawkenbury
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The size of the job
- Access and height
- The type of sealant required
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
What we need to know
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- Where the property is
- If it’s domestic, commercial or a hotel
- Roughly how big the job is
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.