Construction and new-build mastic in Sittingbourne, Kent
Mastic packages for new-build and refurbishment projects in Sittingbourne. CHAS accredited and fully insured, with a 12-month guarantee.
- Existing joints on a refurb that need cutting out and resealing
- Cracks opening in caulked internal joints
- Sealant knocked or painted over by other trades
Construction mastic for businesses in Sittingbourne
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle construction mastic in Sittingbourne
On a new build, the mastic package is one of the last trades through each area, so it lands at exactly the point the programme is tightest. We work as a mastic subcontractor to main contractors and developers on schemes in Sittingbourne, following the trades through the building as rooms and elevations become ready. Site teams most often ask us about different trades sealing to different standards and external joints sealed in damp or cold conditions that are now failing, across internal decorators’ caulk, floor and skirting junctions and window and door perimeters. Whoever orders the work in Sittingbourne, the brief is typically the same: a clear scope, tidy work and joints that don’t fail again.
Developers and contractors working in Sittingbourne want mastic that keeps pace with the build: perimeters sealed before scaffold is struck, internal sealant after decoration, snags before handover. Send drawings and the programme and we’ll price to suit.
Work we carry out in Kent comes with a 12-month guarantee. If an installation problem shows up, phone 01277 525 020 or email drawings and photos and we’ll arrange a return visit.
- Location
- Sittingbourne (ME10, ME9)
- Region
- Kent
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
For managing agents and facilities managers
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
From enquiry to sign-off
In a busy building, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before the next one starts. If you have more than one building in Sittingbourne, they can often be done on the same visit, with one quote covering them. Give us your access times and we’ll fit the work in.
- We price from the drawings, specification and programme you send.
- You receive a fixed quote listing scope, products and phasing.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Areas are sealed plot by plot or floor by floor as the trades hand them over.
- Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
- We close out snagging and hand over with a 12-month guarantee.
What we need from you
- Arrange parking or a loading space
- Share your working hours and any access restrictions
- Flag any permit to work we’ll need
Request a quote
The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or speak to us on 01277 525 020 or email us to discuss it first.
Related advice
Surface by surface
External facade and movement joints
External movement joints often need primer, depending on the substrate. Primer goes on where the sealant maker calls for it and work only when conditions suit.
Window and door perimeters
Internal perimeters are normally sealed with a paintable product where decorating follows. We follow what’s specified with colours matched to the frame where needed.
Contractors’ notes for Sittingbourne
With the shore within about 2 miles, Sittingbourne counts as a coastal location. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. Sittingbourne is about 37 miles from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes.
Hotel extensions and refits, at places such as The Bull Hotel, under half a mile south-east of Sittingbourne, normally run between busy periods, so the sealing is squeezed into short windows. New wings at hospitals like Sittingbourne Memorial Hospital, 0.6 miles south of Sittingbourne, bring long runs of window and panel joints to seal. When a college such as KITE College, 0.6 miles to the east of Sittingbourne, builds or refurbishes, the mastic package usually has to fit around students and staff.
Sittingbourne is about 37 miles east of London, in Kent. Our applicators travel to Sittingbourne for work on mastic packages. Across Kent, 931 places are covered, Sittingbourne among them. For work in that direction, see our London page (37 miles or so).
Work on mastic packages is covered throughout ME10 and ME9, whatever the building. We cover commercial and managed buildings on High Street, Roman Square and Moonstone Square and the roads nearby. Sittingbourne sits on or close to the A2 and A249, which helps when planning parking and deliveries for the job. We also cover Murston (1 mile east), Milton Regis (1 mile north-east), Kemsley (1 mile north), Howt Green (1 mile north-west) and Heart's Delight (1 mile south-west) for mastic packages. Further afield, our area takes in Maidstone (10 miles south-west), Ashford (15 miles south), Whitstable (13 miles east), Faversham (7 miles east), Minster (6 miles north-east) and Kings Hill (15 miles west). Sittingbourne ranks among the main centres of Kent, with offices, shops, schools and other public and commercial buildings.
What’s near Sittingbourne
Around Sittingbourne, our work takes us to commercial buildings near Milton Court Primary Academy, The Golden Hope pub and Milton Creek Country Park. There’s a railway station in Sittingbourne itself: Sittingbourne station. A little further out are Bayford Court (under half a mile east) and Court Hall Museum (less than half a mile north).
Nearby places to Sittingbourne
More services for Sittingbourne
Questions we are asked in Sittingbourne
Will you plan work around the academic year at somewhere like KITE College?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Can you work on a hospital site such as Sittingbourne Memorial Hospital?
Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.
Can you come in just for snagging?
Yes. Share the list and photos, and a fixed quote follows.
Is the mastic package guaranteed?
Each package is signed off with a 12-month workmanship guarantee. Damage by others after we’ve finished isn’t covered.
Can fire-rated sealing at service penetrations be included?
Where it’s specified, yes. We will flag if the detail needs a different product.
Who decides which product is used?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
What happens if the weather stops external sealing?
Conditions have to suit the product before external work starts. Wet or cold joints cause adhesion problems so it’s better to wait.
What happens if it’s left?
It helps to bring the mastic subcontractor in before the package is urgent. Early involvement means gaps, products and access are sorted before the programme bites rather than at the snagging stage. Called in at the end, the same issues surface during handover. Many buildings in towns like Sittingbourne have been extended or altered, and joints where old meets new tend to fail first. Renewing them before water gets in protects the fabric.
The specified product makes a difference, and so does the preparation. Access, phasing and site requirements come into it too.
Why clients in Sittingbourne choose us
- A range of standard colours, depending on the product
- Work carried out by CSCS-carded applicators
- Joints cleaned back to sound surfaces
- One number for every site we cover
Take a look at what affects the cost and how we’re accredited.
Site staff or a sealant specialist?
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Maintenance after handover
A few simple habits keep the new joints working:
- Get the mastic subcontractor involved early in the programme
- Don’t force external sealing on a damp or frosty day
- Brief following trades on areas that have been sealed
- Record the products used in the O&M file
If a joint is damaged after sealing, flag it early. Snags can be picked up in a planned close-out visit.
Sanitary joints that fail early become defects soon after occupation. Water gets behind trays, vanity tops and panels. Proper preparation, with the right silicone first time, keeps it off the defects list.