Kent · England
Sand Mastic in Henhurst
Specialist sand mastic for Henhurst: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
Why deal with it now?
Replacing sash windows is a big decision for a period home and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. Around Henhurst, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why Henhurst clients choose us
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
- Approved under the ARBOMaster scheme
- Anti-fungal sanitary silicone in wet areas
See our cost guide and customer reviews.
About our sand mastic in Henhurst
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. If you have crumbling sand mastic round a window and mastic that needs renewing before redecorating, we can put it right, on sash and case windows, period & listed homes and tenement windows alike.
Homes in small places like Henhurst 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.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Henhurst (DA12)
- Region
- Kent
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about sand mastic in Henhurst
Do you cover smaller places like Henhurst?
Yes. Henhurst is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do sand mastic in Henhurst?
Yes, Henhurst is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
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 long does sand mastic take?
A typical job takes a few hours per window, depending on the condition of the joints. We’ll confirm how long when we quote.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Where do you work from?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Housing providers, facilities teams and property managers book us too in Henhurst and across Kent. We can quote a run of properties together, and we are fully insured for the work.
When it is not the sealant
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Cracked or broken glass
- Sashes that need overhauling
- Decisions on consent for listed homes
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Where we work in Henhurst
- Tenement windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Sash and case windows
- Stone surrounds
How it works
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours per window, depending on the condition of the joints. For a village or hamlet like Henhurst, 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.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
Advice
Henhurst homes and the weather
Historic houses like Cobham College (about 1 mile south-east) are a reminder that the area around Henhurst has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Church of St Margaret, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as Singlewell Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Henhurst is about 2 miles south of Gravesend, in Kent. Our applicators cover sand mastic for homes and businesses in Henhurst, as part of our work across Kent. We cover 922 towns and villages across Kent, large and small. Our London page covers work nearby, about 22 miles away.
Postcode districts we cover here for sand mastic: DA12. Other places close to Henhurst include Singlewell or Ifield (1 mile north-west), Istead Rise (1 mile west), Gravesend (2 miles north), Denton (2 miles north) and Northfleet Green (2 miles north-west). We also work in nearby towns such as Maidstone (11 miles south-east), Dartford (8 miles west), Sevenoaks (12 miles south-west), Tonbridge (15 miles south), Northfleet (3 miles north-west) and Swanley (9 miles west).
Local landmarks in Henhurst
We work in homes and buildings around Jeskyns, The George Inn and Thamesview School, among other places. Henhurst’s nearest station is Sole Street station, roughly 1.3 miles south. Nearby you will also find Gravesham Museum (2.8 miles north) and Gravesham Community Hospital (3 miles north). For a walk, there’s Sawyers Lake and Gad's Hill.
What affects the cost of sand mastic
We don’t publish a price list. What we look at:
- Access and height
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
Doing several joints on one visit is normally more efficient than separate visits. You will get one clear quote for the whole job.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- The rough size of the job
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or send us an email.
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Nearby places to Henhurst
What else we do in Henhurst
When to call us in Henhurst
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber, and they generally need raking out.
Most people get in touch after spotting one of these:
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
For landlords with property near Sole Street station, any sash windows need sound mastic to keep draughts and rain out.
Before you book anyone
- What the cure time is
- What happens if the job turns out different
- Whether VAT is included
- How the joint is cleaned and prepared