Kent · England
Kent Street Sand Mastic
Sand mastic in Kent Street from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Window mastic to renew ahead of painting
- Draughty sash windows at the surround
- Old cement repairs round a window that have failed
Sand mastic in Kent Street, done properly
We work across Kent Street renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand, finished to suit the masonry. If you have draughts and rain around sash boxes and silicone on a period window that looks wrong, we can help, on brick reveals, stone surrounds and timber door frames alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Kent Street is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Kent Street (ME18)
- Wider area
- Kent
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Kent Street
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. Historic houses like Old Soar Manor (about 2.8 miles west) are a reminder that the area around Kent Street 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.
Managing a site like Kings Hill 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 Wateringbury station, any sash windows need sound mastic to keep draughts and rain out.
Kent Street is about 6 miles west of Maidstone, in Kent. We provide sand mastic to householders, landlords and businesses in Kent Street and the surrounding area. Our area takes in 922 places across Kent, large and small. You can also see our page for London, roughly 26 miles from Kent Street.
Here we cover the ME18 postcode area for sand mastic. We cover properties on Kent Street and Malling Road and the roads around them. Neighbouring places we cover for sand mastic include Herne Pound (1 mile south-west), Mereworth (1 mile south), New Pound (1 mile west), Pizien Well (1 mile south-east) and Swanton (1 mile south-west). We also work in nearby towns such as Maidstone (6 miles east), Dartford (14 miles north-west), Sevenoaks (9 miles west), Royal Tunbridge Wells (10 miles south-west), Gravesend (11 miles north) and Tonbridge (7 miles south-west).
What’s near Kent Street
We work in homes and buildings around The Queens Head Public House and Manor Park Country Park and the streets around them. The nearest railway station is Wateringbury station, about 2.1 miles south-east. Other landmarks nearby include Beechin Wood Archery Museum (2.5 miles north-west) and Maidstone Hospital (4.3 miles east).
Towns and villages near Kent Street
Other services in Kent Street
Kent Street: your questions answered
Do you cover Kent Street for sand mastic?
Yes, Kent Street is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
I let a flat near Wateringbury station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Can old silicone round a sash window be swapped for sand mastic?
Yes. We remove the silicone and clean the joint before the sand mastic goes in.
Where do you work from?
We work from Crawley. We cover Kent Street and the rest of Kent.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Are you insured?
Yes, we are fully insured for domestic and commercial work.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before resealing.
The process
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours for a single window, longer for several, and we tell you how long to leave it before we go. In a small place like Kent Street, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- Old, loose 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 mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
- Let us know about parking restrictions
Getting a quote
For a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
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For landlords and businesses
Landlords and letting agents in Kent Street can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Make sure water runs off the sill
- Go gently near the mastic when preparing windows
- Don’t run silicone over sand mastic
- Look over the window mastic once a year
Don’t touch or press the mastic while it hardens. It skins over quickly, but takes longer to harden fully.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
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. In a small place like Kent Street, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before we start.
Why us?
- 12-month guarantee on every job
- 20+ years of sealant experience
- Fully insured
- Neat joints and a tidy finish
Take a look at our cost guide or customer reviews.
What the job involves on each surface
Timber door frames
Door frames get knocked and soaked and the mastic can crack early. It’s renewed by hand.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Common problems we fix in Kent Street
Rain on the window surround works into any crack and pushes it out. Windows facing the weather tend to go first.
These are the problems we are asked about most:
- Old cement repairs round a window that have failed
- Failed mastic on an exposed elevation
- A silicone bead on a sash window that spoils the look
- Window mastic to renew ahead of painting
Homes close to St Lawrence's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before you book
- What happens if the job turns out different
- Who does the work, and how experienced they are
- The length of the guarantee
- What product goes in the joint