Kent · England
Sand mastic for sash & case windows in Worth, Kent
Professional sand mastic in and around Worth, with old sealant always removed completely.
- Mastic dropping out of the joint
- Cracked mastic round a front door frame
- Wind and rain getting in round a sash window
Worth: your questions answered
Is Worth within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Sandwich station. Can you help?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Is sand mastic better than silicone for my windows?
We’ll talk it through with you. Sand mastic suits many period homes and newer frames suit modern sealant.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. The old silicone has to come out completely so the mastic can sit properly.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Sand mastic in Worth
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you have wind and rain getting in round a sash window and open joints round the window box, we can help, on period & listed homes, timber door frames and brick reveals alike.
In a village or hamlet like Worth, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Worth (CT14)
- Wider area
- Kent
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Worth
More services for Worth
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Sashes that rattle, stick or won’t open
- Whether work needs listed building consent
- Broken panes
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Period & listed homes
- Brick reveals
- Tenement windows
- Stone surrounds
- Timber door frames
- Sash and case windows
The process
Before we leave, we go over the finished joints with you. The work normally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. For a village or hamlet like Worth, the journey is planned in advance: 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.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
How to get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Related advice
Why it’s worth doing now in Worth
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. Older cottages and farmhouses around Worth can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
- Fully insured
- Anti-fungal silicone where joints get wet
Take a look at our cost guide and what customers say.
Frames and glazing around Worth
Worth is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Walmer Castle (about 4.5 miles south-east) are a reminder that the area around Worth 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’s traditional sand mastic.
In the older streets around Church of St Peter and St Paul, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Worth Primary School, the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Sandwich station, any sash windows need sound mastic to keep draughts and rain out.
Worth is about 3 miles north-west of Deal, in Kent. We carry out sand mastic for homes and businesses in Worth. Across Kent, we cover 922 places, and Worth is one of them. Our Chelmsford page covers work nearby.
We work across the CT14 postcode area for sand mastic and the streets around it. That includes homes and businesses on The Street, Temple Way and St Crispin Close. Neighbouring places we cover for sand mastic include Felderland (1 mile west), Ham (1 mile south-west), Hacklinge (1 mile south-east), Statenborough (1 mile west) and Sandwich (1 mile north). Larger places within reach include Canterbury (12 miles west), Margate (9 miles north), Dover (8 miles south), Folkestone (14 miles south-west), Ramsgate (6 miles north-east) and Broadstairs (8 miles north-east).
Around Worth
Typical jobs here are in homes near Sandwich Technology School, The Blue Pigeons pub and Ham Fen, among other places. Worth’s nearest station is Sandwich station, about 1.1 miles north of the centre. A little further out are Sandown Castle (2.7 miles south-east) and The Precinct Toy Collection (1.5 miles north). For a walk, there’s Monk's Wall nature reserve.
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
How to look after the new joints
So the new joints stay in good condition:
- Don’t run silicone over sand mastic
- Find out about consent before window work on a listed home
- Keep sills and gutters clear so water drains away
- Get any rot dealt with first
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
Surface by surface
Timber door frames
Round a period front door, sand mastic gives the right look.
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we will confirm access.
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- How much there is to do
- The product the joint needs
- Any working-time requirements on site
- The number of rooms or windows
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The type of property
- How many joints, rooms or windows are involved
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.