Kent · England
Sand Mastic in Hernhill
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Hernhill, backed by a one-year guarantee. Ask us for a quote.
- Old cement repairs round a window that have failed
- Mastic worn away on windows facing the weather
- Mastic that needs renewing before redecorating
How we quote for sand mastic
Every job gets its own quote. These are the things that affect it:
- Working hours on commercial sites
- Any mould that needs treating
- The amount of work
- How many areas need sealing
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
Asking for a quote
There’s no need for technical detail. Just tell us:
- The rough size of the job
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
About our sand mastic in Hernhill
Across Hernhill, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. We work on tenement windows, brick reveals and period & listed homes, and people most often call us about mastic that needs renewing before redecorating and cement or filler used on old window joints that has cracked.
In a village or hamlet like Hernhill, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
You get a one-year guarantee, the same in Hernhill as everywhere else we work.
- Where
- Hernhill (ME13)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Do you need sand mastic in Hernhill?
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
The problems people usually mention when they call include:
- Patchy fillers round a sash window
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
- Weathered mastic on the most exposed windows
For site and facilities teams at buildings such as Hernhill Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- Whether they’re fully insured
- Which colour the sealant will be
- Whether they seal over old material or remove it
- Who does the work, and how experienced they are
Landlords, agents and businesses in Hernhill
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
The process
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. The work usually takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Hernhill, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Mention any parking rules near the property
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
If you are in Hernhill and need sand mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Advice
Hernhill: your questions answered
Does living near the coast affect sand mastic in Hernhill?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Do you work for landlords with property near Selling station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
How long does sand mastic take?
It depends on the size of the job, but most jobs take a few hours per window, depending on the condition of the joints. We will tell you when we quote.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Which is right for my windows, sand mastic or modern sealant?
That depends on your windows. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Places near Hernhill
What else we do in Hernhill
What sealant work can’t fix
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Decayed frames that need repair
- Sashes that need overhauling
- Masonry that needs repairing
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Timber door frames
- Sash and case windows
- Brick reveals
- Stone surrounds
- Tenement windows
- Period & listed homes
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Renew mastic before redecorating the windows
- Have rotten timber repaired before new mastic goes in
- Look over the window mastic once a year
- Clear gutters so water does not pour onto the windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
What sand mastic looks like in Hernhill
Hernhill is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Selling station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. For an older house near a landmark such as Church of St Michael, the joint between an old wall and a newer frame is usually the first place rain gets in.
Hernhill is about 3 miles east of Faversham, in Kent. Wherever you are in the ME13 postcode area, we cover sand mastic for homes and businesses. 922 places in Kent are on our list, from the larger towns to small villages. We also work in Chelmsford, around 36 miles away.
We cover every part of ME13 for sand mastic. We also cover the places around Hernhill: Slutshole (1 mile south-west), Staplestreet (1 mile south-west), Dargate (1 mile north-east), Culmers (1 mile north-west) and Goodnestone (1 mile north-west). Larger places within reach include Ashford (12 miles south), Canterbury (6 miles east), Sittingbourne (10 miles west), Whitstable (4 miles north-east), Faversham (3 miles west) and Herne Bay (8 miles north-east).
Near you in Hernhill
Typical jobs here are in homes near Red Lion pub and Mount Ephraim Gardens. The nearest railway station is Selling station, about 2.3 miles south-west of the centre. Nearby you’ll also find Chilham Castle (4.5 miles south) and Whitstable and Tankerton Hospital (5.3 miles north-east). The countryside around Hernhill includes Blean Woods RSPB Reserve.