Kent · England
Kempe's Corner Sand Mastic
Sand mastic for Kempe's Corner, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Open joints round the window box
- Modern sealant on a period surround
- Draughts and rain around sash boxes
Sand mastic in Kempe's Corner, done properly
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap and tidies the surround. Typical jobs include crumbling sand mastic round a window and tired mastic found when preparing windows for paint, across timber door frames, brick reveals and sash and case windows.
Somewhere as small as Kempe's Corner, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Each job carries a 12-month guarantee.
- Location
- Kempe's Corner (TN25)
- Region
- Kent
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of sand mastic
You’ll get a clear quote before any work starts. It’s based on:
- Any working-time requirements on site
- The size of the job
- The product the joint needs
- How many rooms, windows or areas are involved
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
What we need to know
To make quoting easier, let us know:
- If someone has resealed it before
- Pictures of the joints, sent by email
- The type of property
- Access, such as stairs, a lift or height
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.
Nearby places to Kempe's Corner
More services for Kempe's Corner
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. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Where a wall is exposed, as many are in small places like Kempe's Corner, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
Why choose Mr Mastic in Kempe's Corner
- 20+ years of sealant experience
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
- 12-month guarantee on every job
Take a look at how sealant jobs are priced or what customers say.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Letting agents and landlords in Kempe's Corner can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
What we do, step by step
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours per window, depending on the condition of the joints for a typical job. In a small place like Kempe's Corner, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
How to get a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or email us and describe the job.
Read more
Common questions in Kempe's Corner
Do you work for landlords with property near Wye station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Will you come out to Kempe's Corner?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We will tell you what we’re using and why.
Where are you based?
We work from Crawley. We cover Kempe's Corner and the rest of Kent.
How long does sand mastic take to harden?
It takes a while. The skin forms first, and the full set comes later and we will give you an idea for your job.
How long will you be here?
A typical job takes a few hours per window, depending on the condition of the joints, including preparation and clearing up. We will confirm how long when we quote.
Should I use sand mastic or silicone?
We’ll help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How the job changes by surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
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 sand mastic looks like in Kempe's Corner
With historic houses such as Godinton House (about 3.8 miles south-west) nearby, there’s older building stock in the area around Kempe's Corner as well as newer homes. 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Wye station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near All Saints’ Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Kempe's Corner is about 4 miles north-east of Ashford, in Kent. Jobs in Kempe's Corner get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our Kent coverage runs to 922 places, Kempe's Corner among them. Chelmsford is on our list too, about 42 miles from Kempe's Corner.
Postcode districts we cover here for sand mastic: TN25. You’ll find streets such as Harville Road and Canterbury Road, all of which we cover. Nearby, we also carry out sand mastic in Boughton Corner (1 mile north), Boughton Aluph (1 mile north), Wye (1 mile east), Brook (2 miles south-east) and Hinxhill (3 miles south). Larger places within reach include Ashford (4 miles south-west), Canterbury (10 miles north-east), Sittingbourne (13 miles north-west), Folkestone (13 miles south-east), Whitstable (13 miles north-east) and Faversham (9 miles north).
Landmarks near Kempe's Corner
Typical jobs here are in homes near Wye School, The Tickled Trout pub and Wye School. The nearest railway station is Wye station, about 0.8 miles east. A little further out are County Square (3 miles south-west) and Tower keep castle at Chilham (4.6 miles north-east). Green spaces nearby include Hatch Park.
Signs you need sand mastic in Kempe's Corner
Shallow joints are a common cause. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
People normally contact us after spotting one of these:
- A silicone bead on a sash window that spoils the look
- Cracked mastic round a front door frame
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
Schools such as Lady Joanna Thornhill Endowed Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- What insurance they hold
- What the cure time is
- What the quote includes, VAT included or not
- Whether they seal over old material or remove it
Aftercare tips
Good habits help new joints last longer. A few tips:
- Leave the new mastic unpainted
- Keep modern sealant off the mastic
- Go gently near the mastic when preparing windows
- Get any rot dealt with first
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.