Kent · England
Hackington Sand Mastic
Sand mastic across Hackington and nearby, with every bit of old sealant taken out first.
- Wind and rain getting in round a sash window
- Tired mastic found when preparing windows for paint
- Cement or filler used on old window joints that has cracked
How we handle sand mastic in Hackington
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. Common call-outs are for old cement repairs round a window that have failed and a silicone bead on a sash window that spoils the look, on period & listed homes, stone surrounds and timber door frames.
Somewhere as small as Hackington, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Every job is covered by a one-year guarantee.
- Location
- Hackington (CT2)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
To be straight with you, there are a few things sealant won’t fix:
- Whether work needs listed building consent
- Putty and glazing repairs
- Sashes that need overhauling
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Hackington
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Tenement windows
- Brick reveals
- Timber door frames
Different surfaces, different methods
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we will confirm what’s needed.
Also near Hackington
Also in Hackington
How we quote for sand mastic
Jobs vary more than people expect. What affects the quote:
- The number and length of the joints
- Working hours on commercial sites
- Mould in or behind the old joints
- Access and height
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- A few pictures by email, if you can
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- How many joints, rooms or windows are involved
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Landlords, agents and businesses in Hackington
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Inspect the joints round the windows every year or so
- Ask a joiner to look at soft timber first
- Find out about consent before window work on a listed home
- Avoid patching sand mastic with silicone
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Hackington questions
Is Hackington within the area you cover?
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 Hackington for sand mastic?
Yes. Our work covers London and the South East, and Hackington is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
How do I get a quote for sand mastic in Hackington?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
How long will you be here?
As a guide, most jobs take a few hours for a single window, longer for several. Larger jobs naturally take longer, and we’ll tell you how long to expect.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before any work starts.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How the visit works
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Hackington, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any parking rules near the property
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Related advice
Hackington homes and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Canterbury West station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Schools such as The Archbishop's School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Church of St Cosmus and St Damian, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Hackington is about 2 miles north of Canterbury, in Kent. Homes, rented property, offices and hotels in Hackington is covered for sand mastic. The work is guaranteed for a year. Our area takes in 922 places across Kent, large and small. You can also see our page for Chelmsford, roughly 39 miles from Hackington.
Here we cover the CT2 postcode area for sand mastic. Local streets include Link Road, Fleets Lane and Darwin Road, all of which we cover. We also cover Tyler Hill (1 mile north-west), Blean (1 mile west), Honey Hill (2 miles north-west), Radfall (2 miles north) and Denstroude (2 miles west). Larger places within reach include Ashford (14 miles south-west), Margate (14 miles east), Dover (15 miles south-east), Sittingbourne (15 miles west), Ramsgate (15 miles east) and Whitstable (4 miles north-west).
Landmarks near Hackington
Around Hackington, our work takes us to homes and buildings near St Edmund's School, Ye Olde Beverlie Inn and St Stephen's Junior School. The closest station to Hackington is Canterbury West station, about 1.4 miles south of the centre. Nearby you’ll also find Canterbury Castle (2 miles south) and Whitefriars Shopping Centre (1.9 miles south). Green spaces nearby include Blean Woods RSPB Reserve.