Kent · England
Sandway Window Mastic
Our applicators work in Sandway on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- Gaps where the sill meets the wall
- Hard, cracked sealant around windows
- Water coming in at the bottom corners of a door
About our window mastic in Sandway
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before any work starts. To get one, call 0345 464 0079 or email us with the number of frames and any access details. We work on composite doors, patio & French doors and timber windows & doors, and people most often call us about black, perished sealant on frames and sealant in the wrong colour for the frame.
Somewhere as small as Sandway, 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.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Sandway (ME17)
- Wider area
- Kent
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Sandway
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Leeds Castle (about 3.3 miles north-west) are a reminder that the area around Sandway has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Rented homes near Lenham station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For site and facilities teams at buildings such as Platts Heath Primary School, the mastic around its windows and doors needs looking after like any other building’s. Homes close to St Mary's Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Sandway is about 8 miles east of Maidstone, in Kent. Jobs in Sandway 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, Sandway among them. There’s also a page for Chelmsford, roughly 36 miles from Sandway.
Here we cover the ME17 postcode area for window mastic. Streets in the area include Headcorn Road, Sandway Road and Old Ham Lane, all of which we cover. We also cover the places around Sandway: Platt's Heath (1 mile south-west), Liverton Street (1 mile south-west), Boughton Malherbe (1 mile south), Marley (1 mile north-west) and Harrietsham (1 mile north-west). We also work in nearby towns such as Maidstone (8 miles west), Ashford (9 miles south-east), Sittingbourne (8 miles north), Faversham (10 miles north-east), Minster (14 miles north) and Kings Hill (13 miles west).
Landmarks near Sandway
Around Sandway, our work takes us to homes and buildings near Kiln Wood, The Lenham School and Wishful Thinker pub and the streets around them. The closest station to Sandway is Lenham station, about 0.5 miles north-east. Nearby you will also find The Dog Collar Museum (3.2 miles north-west) and Coldbridge Castle (2.1 miles south).
How the job changes by surface
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.
How we quote for window mastic
We quote each job individually. These are the things that affect it:
- Access and height
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Mould in or behind the old joints
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will go through it with you.
Helping us quote
What to tell us when you ask for a quote:
- Any access issues, like height or stairs
- The type of property
- The address or postcode of the job
- Pictures of the joints, sent by email
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
How the visit works
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes most of a day for a typical house, less for a few frames. Somewhere like Sandway needs a little journey planning: 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 window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
How to prepare
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details.
Read more
Landlord and commercial work in Sandway
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Towns and villages near Sandway
Other services in Sandway
Common questions in Sandway
Do you cover Sandway for window mastic?
Yes, Sandway is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
I let a flat near Lenham station. Can you help?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Can resealing stop a draught around my window?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
How long will my window job take?
A handful of frames is a short visit, while a whole house takes longer. You’ll get a timescale with the quote.
Can you get sealant to suit coloured frames?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
What does window mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Can you do several jobs on one visit?
Yes. Just list everything you need.
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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.
Why act early in Sandway
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. Older cottages and farmhouses around Sandway can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why choose Mr Mastic in Sandway
- Anti-fungal silicone where joints get wet
- Approved under the ARBOMaster scheme
- We agree the colour with you first
- Every job guaranteed for a year
Read our cost guide and what customers say.
When something else is needed
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
- Damp coming through the wall itself rather than the frame joint
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Surfaces we seal
- uPVC windows
- Patio & French doors
- Aluminium frames
- Composite doors
- Window sills
- Timber windows & doors