Kent · England
Sand Mastic in Upper Harbledown
Window and door surrounds in Upper Harbledown need attention? We cut out the old, prepare the joints and apply the right sealant.
- Gaps where the frame meets the masonry
- Mastic that needs renewing before redecorating
- Wind and rain getting in round a sash window
Frames and glazing around Upper Harbledown
London and the South East are among the drier parts of the UK, 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 cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around Church of St. Gabriel, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For site and facilities teams at buildings such as St Edmund's School, larger buildings have plenty of frames, and the mastic around each one ages.
Upper Harbledown is about 2 miles west of Canterbury, in Kent. If you need sand mastic in Upper Harbledown, it’s easy to get a quote: please call 0345 464 0079 or email us. We’re based in Crawley and cover Kent. Upper Harbledown is one of 922 towns and villages in Kent we cover for sand mastic. Our Chelmsford page covers work nearby (39 miles or so).
Our applicators cover all of the CT2 postcode area for sand mastic and the streets around it. Local streets include Roman Road, The Green and Limes Place, and we cover them all. Other places close to Upper Harbledown include Rough Common (1 mile north-east), Harbledown (1 mile east), Chartham Hatch (1 mile south-west), Thanington (1 mile south-east) and Wincheap (2 miles south-east). Within a short drive, we also cover Ashford (12 miles south-west), Dover (15 miles south-east), Sittingbourne (14 miles west), Folkestone (15 miles south-east), Whitstable (5 miles north) and Faversham (7 miles west).
Around Upper Harbledown
In Upper Harbledown, that means homes and buildings near No Man's Orchard, The Canterbury Academy and The Dog and Bear pub and the streets around them. Upper Harbledown’s nearest station is Canterbury West station, roughly 1.8 miles east. Other landmarks nearby include Canterbury Castle (1.9 miles east) and Eastbridge Hospital of St Thomas the Martyr (2 miles east). The countryside around Upper Harbledown includes Blean Woods RSPB Reserve.
Sand mastic in Upper Harbledown, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. 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’re dealing with silicone on a period window that looks wrong and open joints round the window box, we can put it right.
Somewhere as small as Upper Harbledown, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
All of our work is guaranteed for twelve months, in Upper Harbledown and everywhere else we cover.
- Location
- Upper Harbledown (CT2)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Upper Harbledown: your questions answered
Do you cover Upper Harbledown for sand mastic?
Yes, Upper Harbledown is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Can you help a landlord with a rental near Canterbury West station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
What’s sand mastic made of?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Check the mastic when you check the paintwork
- Do not run silicone over sand mastic
- Have rotten timber repaired before new mastic goes in
- Plan mastic work ahead of painting
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What we do, step by step
The work is kept neat and contained to the joints we are treating. The job normally takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Upper Harbledown, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
Get a quote
We don’t publish a price list. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or send us an email.
Read more
What happens if it’s left?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. In a small place like Upper Harbledown, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- One-year guarantee on every job
- Homes, businesses and hotels
- Arbo and Everbuild products
- Old sealant always removed completely
Read what affects the cost or what customers say.
What sealant work cannot fix
New sealant cannot fix everything, and we’ll tell you before any work starts. Sealant won’t put right:
- Damaged stone surrounds
- Sashes that rattle, stick or won’t open
- Decayed frames that need repair
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Sash and case windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Tenement windows
- Timber door frames
For landlords and businesses
We also work for property managers and facilities teams in Upper Harbledown and across Kent. We can quote a run of properties together, and we’re fully insured for the work.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Also near Upper Harbledown
More services for Upper Harbledown
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
- Which sealant suits the joint
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What to tell us for a quote
To make quoting easier, let us know:
- The rough size of the job
- Where the job is, and your postcode
- Photos by email, if that’s easy
- Access, such as stairs, a lift or height
For sand mastic in Upper Harbledown, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.
What the job involves on each surface
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.