Kent · England
Hawkhurst Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Hawkhurst and across Kent. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Old cement repairs round a window that have failed
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
Landlord and commercial work in Hawkhurst
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
About our sand mastic in Hawkhurst
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. Typical jobs include weathered mastic on the most exposed windows and mastic round period door frames that has failed, on period & listed homes, timber door frames and brick reveals.
Many houses in smaller places like Hawkhurst have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows.
There’s a 12-month guarantee on every job.
- Location
- Hawkhurst (TN18)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
How we quote for sand mastic
The price is agreed before any work begins. It takes into account:
- Which sealant suits the joint
- How many areas need sealing
- Any working-time requirements on site
- Access and height
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Helping us quote
To make quoting easier, please include:
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
How it works
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the work takes a few hours per window, depending on the condition of the joints for a typical job. For a job in Hawkhurst, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Let us know about parking restrictions
Get a quote
If you’re in Hawkhurst and need sand mastic, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Related advice
What happens if it’s left?
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Around Hawkhurst, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear price before we start.
Why Hawkhurst clients choose us
- A 12-month guarantee on all work
- Homes, businesses and hotels
- Arbo and Everbuild products
- Rated 4.9 stars on Google
Read our cost guide or our reviews.
Sand mastic in Hawkhurst: local notes
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. With historic houses such as Great Dixter (about 5 miles south-east) nearby, there’s older building stock in the area around Hawkhurst as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Hawkhurst Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Etchingham station, older sash windows in a rental need their mastic kept sound to keep the weather out. Homes close to Church of All Saints include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Hawkhurst is about 12 miles south-east of Royal Tunbridge Wells, in Kent. For sand mastic in and around Hawkhurst, please call 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Kent, Hawkhurst included. Hawkhurst is one of 922 places in Kent we cover for sand mastic. There’s also a page for Crawley, roughly 31 miles from Hawkhurst.
Jobs for sand mastic in TN18 works the same way as everywhere else we cover. That includes homes and businesses on High Street, Barretts Road and Norris Close. If you are just outside Hawkhurst, we cover Beal's Green (1 mile north), Pipsden (1 mile east), The Moor (1 mile south-west), Gill's Green (1 mile north) and Little Conghurst (1 mile south-east). Within a short drive, we also cover Maidstone (15 miles north), Royal Tunbridge Wells (12 miles north-west), Tonbridge (14 miles north-west), Paddock Wood (10 miles north-west), Tenterden (8 miles east) and Southborough (13 miles north-west).
Local landmarks in Hawkhurst
In Hawkhurst, that means homes and buildings near Collingwood Nature Reserve, The Queen's Hotel and Marlborough House School. For rail, the closest station is Etchingham station, roughly 4 miles south-west. Other landmarks nearby include Ticehurst House Hospital (4.9 miles west).
Keeping the joints in good condition
After the cure time, these simple habits help:
- Go gently near the mastic when preparing windows
- Don’t run silicone over sand mastic
- Inspect the joints round the windows every year or so
- Make sure water runs off the sill
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Hawkhurst questions
Do you cover Hawkhurst for sand mastic?
Yes, Hawkhurst is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Do you work for landlords with property near Etchingham station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is the work guaranteed?
Our 12-month guarantee applies to all our work.
How long does sand mastic take?
Typically it takes a few hours for a single window, longer for several. Larger jobs naturally take longer, and we’ll say how long yours will take.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for listed or conservation-area properties.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We’ll tell you what to expect for your job.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done.
Nearby places to Hawkhurst
More services for Hawkhurst
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Timber that has rotted
- Broken panes
- Crumbling stone or brickwork round the window
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Timber door frames
- Stone surrounds
- Period & listed homes
- Tenement windows
- Sash and case windows
- Brick reveals