Kent · England
New Build Mastic in Greatness
Problem with your new-build sealant joints in Greatness? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Shower seals failing in the first year or two
- Gaps between new skirting and floors
- Sealant that never bonded to the surface
New homes and floors in Greatness
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around Greatness, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Greatness is about 1 mile north-east of Sevenoaks, in Kent. Greatness gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our Kent coverage runs to 922 places, and Greatness is one of them. Our London page covers work nearby.
Every address in TN13, TN14 and TN15 is within our area for new build mastic, from the main roads to the quietest streets. If you need new build mastic at a property on Seal Road, Mill Lane and Sandy Lane or a nearby road, our applicators can take on the job. Other places close to Greatness include Seal (1 mile east), Godden Green (2 miles south-east), Styants Bottom (3 miles east), Bitchet Green (3 miles south-east) and Stone Street (3 miles south-east). Within a short drive, we also cover Maidstone (14 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (12 miles north-east), Tonbridge (7 miles south-east) and Northfleet (12 miles north-east).
What’s near Greatness
Locally, jobs take us to homes and businesses close to The Old Bat and Ball pub, Wildernesse School and Knole Academy, among other places. Greatness has its own railway station: Bat & Ball station. Other landmarks nearby include Sevenoaks Museum (1.3 miles south) and Kemsing Castle Bank (1.7 miles north-east). The countryside around Greatness includes Dryhill Nature Reserve.
New build mastic in Greatness
We work in new homes and on new-build sites across Greatness. One shower or a whole phase of plots, the method does not change: cut out, clean, prime where needed and reseal neatly. We work on bathrooms & en suites, windows & doors and show homes, and the jobs we see most are cracked sealant around new window and door frames and new-build shower sealant that has already split.
In smaller places like Greatness, new homes tend to come as small developments or single plots. The sealant around baths, showers, frames and skirtings needs to be right from the start.
You are covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or send us an email.
- Place
- Greatness (TN13, TN14, TN15)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Wipe joints with warm soapy water
- Put sealant faults on your snagging list early
- Look at the sealant regularly in the first couple of years
- Avoid running a DIY bead over the old one
Ventilation matters in a new home, which is still drying out. Use the extractor fan or open a window after showers to help keep mould away.
Early snagging is easier snagging. Small faults turn into leaks if left in a busy bathroom.
Do you need new build mastic in Greatness?
The first winter with the heating on dries a new home quickly. Skirting, frames and worktops pull away slightly and cracked sealant shows up.
It’s worth asking for a quote if you see:
- Shower seals failing in the first year or two
- Smeared, uneven beads picked up at snagging
- Second-fix sealing on new plots
- Skirting joints opening in the first winter
For new homes near Bat & Ball station, it’s worth checking the sealant early, while snags are still fresh.
Before you book anyone
- Who does the work, and how experienced they are
- What the cure time is
- How long the guarantee is
- Whether they’re fully insured
What sealant work can’t fix
We won’t take on work that won’t last, so these are the limits:
- Disputes or warranty claims with your builder
- Leaks from pipes, valves or wastes, which need a plumber
- Settlement cracks that need a surveyor
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Show homes
- Plot handovers
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Kitchens
How the job changes by surface
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. The joint is stripped back before the new bead goes in with baths filled first.
Kitchens
As a new house dries, worktops and walls shift a little, opening gaps behind the upstand. A fresh flexible bead closes them.
Towns and villages near Greatness
Also in Greatness
What we do, step by step
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours in a single home for a typical job. A visit to Greatness is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
How to prepare
- On commercial sites, let us know about site rules
- Let us know about parking restrictions
- Mention any tricky access
Getting a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, ring 0345 464 0079 or send us an email.
Related advice
FAQs for Greatness
Do you cover Greatness for new build mastic?
Yes, Greatness is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Do you cover smaller places like Greatness?
Yes, Greatness is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Is there any odour?
Sometimes, a little. It fades as the sealant cures.
Should I go to my builder first?
Report it to the builder first while you’re covered. Once that’s done, or if they will not put it right, we’ll cut it out and reseal it.
How do I get a quote for new build mastic in Greatness?
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. You will get a clear quote before work begins.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Is there a guarantee?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we will sort it.
How we quote for new build mastic
Your quote is based on your job. We take into account:
- Any mould that needs treating
- Working hours on commercial sites
- The number and length of the joints
- Whether old sealant or filler has to be cut out
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Asking for a quote
To help us quote quickly, please include:
- The type of property
- If someone has resealed it before
- A few pictures by email, if you can
- How we’d reach the joints
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, phone 0345 464 0079 or send us an email.