Kent · England
Sand mastic for sash & case windows in Lewson Street, Kent
Sand mastic for Lewson Street and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Draughts and rain around sash boxes
- Weathered mastic on the most exposed windows
- Modern sealant on a period surround
How we handle sand mastic in Lewson Street
Sand mastic skins over fairly quickly but full hardening takes longer. Traditionally, sand mastic is left unpainted and we’ll advise if you’re redecorating. Common call-outs are for gaps round a timber door in stone or brick and tired mastic found when preparing windows for paint, on tenement windows, stone surrounds and brick reveals.
Mastic can only go onto a dry, clean joint, so window work in Lewson Street is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Lewson Street (ME9)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What we are called out for in Lewson Street
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
These are the problems we are asked about most:
- Crumbling sand mastic round a window
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
Homes close to Church of St Mary include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
What to look for in a quote
- Is VAT in the price?
- Who turns up on the day
- What insurance they hold
- How long the guarantee is
Frames and glazing around Lewson Street
Lewson Street is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Teynham Parochial Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Teynham station? Then any sash windows need sound mastic to keep draughts and rain out.
Lewson Street is about 3 miles west of Faversham, in Kent. Wherever you are in the ME9 postcode area, our applicators can take on sand mastic. 922 places in Kent are on our list. We also work in Chelmsford, around 32 miles away.
Every address in ME9 is covered for sand mastic, from the main roads to the quietest streets. That includes homes and businesses on World's End, Lewson Street Road and Norton Road. Close by, we work in Tickham (1 mile south-west), Norton Ash (1 mile north-east), Loyterton (1 mile south-west), Deerton Street (1 mile north-east) and Teynham (1 mile north-west). Further out, we also cover Maidstone (13 miles west), Ashford (12 miles south), Canterbury (12 miles east), Sittingbourne (4 miles north-west), Whitstable (10 miles east) and Faversham (3 miles east).
Around Lewson Street
In Lewson Street, that means homes and buildings near The Plough Inn, among other places. The nearest railway station is Teynham station, roughly 1.3 miles north-west of the centre. Nearby you will also find Sittingbourne Heritage Museum (3.6 miles north-west) and Newnham Castle (2.2 miles south).
When it isn’t the sealant
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Decayed frames that need repair
- Sashes that rattle, stick or will not open
- Putty and glazing repairs
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Timber door frames
- Brick reveals
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
Common questions in Lewson Street
Will you come out to Lewson Street?
Yes, Lewson Street is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is sand mastic in a coastal place like Lewson Street any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Can you match the sealant colour?
Most of the time, yes. We will explain which colours are available and agree one before we start.
Should I use sand mastic or silicone?
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.
Can landlords and businesses book you?
Yes, often. We can quote for several properties at once.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
What we do, step by step
On the day, 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. Most jobs take a few hours for a single window, longer for several. Somewhere like Lewson Street needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
- Let us know about earlier repairs to the joints
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Read more
Nearby places to Lewson Street
Also in Lewson Street
For landlords and businesses
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Why deal with it now?
New sash windows are a major, costly change 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. In a small place like Lewson Street, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why Lewson Street customers choose us
- Trusted Arbo and Everbuild sealants
- Anti-fungal sanitary silicone in wet areas
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
Take a look at our cost guide or what customers say.
Surface by surface
Stone surrounds
The stone is treated with care when the old mastic comes out.
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.