Kent · England
Hackington Window Mastic
Window mastic for Hackington, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
- White mastic on grey or black frames
How we handle window mastic in Hackington
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through. If the draught is through the window seals instead, we will tell you. We work on aluminium frames, uPVC windows and window sills, and the jobs we see most are black, perished sealant on frames and damp patches on the reveal after heavy rain.
Homes in small places like Hackington 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 stand behind the work with a 12-month guarantee, so you are covered after we have gone.
- Where
- Hackington (CT2)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
What we can’t put right
In fairness, there are a few things sealant won’t fix:
- Penetrating damp from a failed cavity tray or render
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A sash or casement that won’t close properly
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
What we seal
- Window sills
- Aluminium frames
- Composite doors
- Timber windows & doors
- Patio & French doors
- uPVC windows
Questions from Hackington
I let a flat near Canterbury West station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Hackington?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Can you get sealant to suit coloured frames?
Yes, in most cases. Tell us the frame colour when you get in touch and we’ll use the nearest match.
What should I tell you?
Let us know what needs doing and where, plus photos if you have them. If we need more, we’ll ask.
Is the work guaranteed?
Yes, with our one-year guarantee. Keeping drainage clear and checking the joints yearly helps them last.
What happens on the day
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. In a small place like Hackington, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
- Tell us about any water getting in
Getting a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Related advice
Common problems we fix in Hackington
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
The problems people normally mention when they call include:
- Water coming in at the bottom corners of a door
- Old mastic that has gone black or come away
- Leaking joints at the ends of sills
- Untidy mastic left by window fitters
If you live in an older home near Church of St Cosmus and St Damian, the joint between an old wall and a newer frame is normally the first place rain gets in.
Before booking anyone
- How long to leave it before use
- Whether they’re fully insured
- How the colour is chosen
- Is VAT in the price?
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Keep jet washers away from the mastic
- Clear any debris from frame drain holes
- Wipe condensation off the frames
- Paint up to the joint, not over it
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
How we quote for window mastic
Jobs vary more than people expect. What affects the quote:
- The type of sealant required
- When we can work, for business premises
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
Before you ask for a quote, have a think about:
- Whether it has been sealed before
- Photos by email, if that’s easy
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
Getting a quote is simple: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we will take it from there.
Towns and villages near Hackington
Other services in Hackington
Window mastic in Hackington: local notes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Canterbury West station? Then renewing tired window mastic between tenants heads off draught and damp complaints. For site and facilities teams at buildings such as The Archbishop's School, larger buildings have plenty of frames, and the mastic around each one ages.
Hackington is about 2 miles north of Canterbury, in Kent. Every kind of property in Hackington can book us for window mastic. The work is guaranteed for a year. Our Kent coverage runs to 922 places, and Hackington is one of them. We also work in Chelmsford, around 39 miles away.
Here we cover the CT2 postcode area for window mastic. You’ll find streets such as Link Road, Fleets Lane and Darwin Road, and we cover them all. Nearby, we also carry out window mastic in 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). We also work in nearby towns such as 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).
Near you in Hackington
We work in homes and buildings around St Edmund's School, Ye Olde Beverlie Inn and St Stephen's Junior School, among other places. The nearest railway station is Canterbury West station, about 1.4 miles south. Other landmarks nearby include Canterbury Castle (2 miles south) and Whitefriars Shopping Centre (1.9 miles south). For a walk, there’s Blean Woods RSPB Reserve.
Work for landlords, hotels and businesses
If you manage several properties in or around Hackington, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
We also work for property managers and facilities teams. Several sites can be quoted together.