Kent · England
Sand mastic for sash & case windows in Hemsted, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Hemsted, with a 12-month guarantee on every job. Ask us for a quote.
- Patchy fillers round a sash window
- Mastic worn away on windows facing the weather
- Mastic that needs renewing before redecorating
Sand mastic in Hemsted
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on timber door frames, period & listed homes and sash and case windows, and common reasons people get in touch are open joints round the window box and old cement repairs round a window that have failed.
Outdoor sealant needs dry, clean surfaces, so work on frames around Hemsted is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Every job is covered by a 12-month guarantee, wherever you are in Kent.
- Where
- Hemsted (CT18)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of sand mastic
For a quick quote, just ask. The main things that affect it are:
- How many areas need sealing
- Working hours on commercial sites
- Access and height
- How much old sealant there is and how hard it is to remove
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. The price is agreed before we begin.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- A few photos by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
For 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.
Leave it or put it right?
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Older cottages and farmhouses around Hemsted can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- Tidy, careful work
- Quality sealants from Arbo and Everbuild
- Every job guaranteed for a year
See how sealant jobs are priced and our reviews.
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Renew mastic before redecorating the windows
- Avoid heavy scraping on the mastic joint
- Keep sills and gutters clear so water drains away
- Inspect the joints round the windows every year or so
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
Different surfaces, different methods
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.
What happens on the day
The work is kept neat and contained to the area we are working on, so you can get on with your day. Expect the work to take a few hours for a single window, longer for several. For a village or hamlet like Hemsted, 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 start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- 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.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
Getting a quote
If you’re in Hemsted and need sand mastic, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
When something else is needed
We won’t take on work that will not last, so these are the limits:
- Sash cords, weights and draught-proofing of the sashes
- Damaged stone surrounds
- Putty and glazing repairs
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Tenement windows
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Timber door frames
- Brick reveals
Places near Hemsted
More services for Hemsted
Hemsted homes and the weather
Historic houses like Westenhanger Castle (about 3.1 miles south) are a reminder that the area around Hemsted has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Stowting Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Westenhanger station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Hemsted is about 5 miles north of Hythe, in Kent. Wherever you are in the CT18 postcode area, we can carry out sand mastic at your property. Across Kent, we cover 922 places, and Hemsted is one of them. There’s also a page for Chelmsford, about 48 miles away.
Work in CT18 is quoted and booked the same way as anywhere else. We also cover Woodland (1 mile south-east), Skeete (1 mile south), Stowting (1 mile west), Rhodes Minnis (1 mile north-east) and Stowting Common (1 mile north-west). Further out, we also cover Ashford (8 miles west), Canterbury (10 miles north), Dover (11 miles east), Folkestone (6 miles south-east), Whitstable (15 miles north) and Faversham (14 miles north-west).
Landmarks near Hemsted
The closest station to Hemsted is Westenhanger station, about 2.9 miles south of the centre. Other landmarks nearby include Saltwood Castle (4 miles south) and Elham Valley Countryside Centre And Railway Museum (3.7 miles south-east). Open spaces near Hemsted include Hatch Park and Tolsford Hill.
Questions from Hemsted
Is Hemsted within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Westenhanger station?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we’re using.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or drop us an email.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish, but they decide.
How long will you be here?
Typically it takes a few hours for a single window, longer for several. Bigger jobs take longer, and we will say how long yours will take.
Should I try it myself first?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.