Kent · England
Radfield New Build Mastic
We cover Radfield for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Untidy sealant flagged on a snagging list
- Cracked sealant around new window and door frames
- Plot mastic for developers ahead of handover
How we handle new build mastic in Radfield
Dust is the enemy of new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the sealant actually sticks rather than sitting on a layer of grit. Typical jobs include new-build shower sealant that has already split and worktop and upstand sealant coming away, on bathrooms & en suites, plot handovers and show homes.
In a village or hamlet like Radfield, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
Every job comes with our one-year guarantee.
- Location
- Radfield (ME9)
- Region
- Kent
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Honest limits
Before you book, it’s worth knowing the limits too:
- Cracking that points to a structural problem
- Your warranty claim itself, which is between you and the builder
- Baths and trays that move too much for sealant to cope with
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Plot handovers
- Kitchens
- Windows & doors
What happens if it’s left?
It often makes sense to do all the sealant items on a snagging list together. It’s one visit, one quote and one set of cure times. Older cottages and farmhouses around Radfield can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- We’re fully insured
- We agree the colour with you first
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
Take a look at what affects the cost or what customers say.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, 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 does not work out, we can still put it right.
Also near Radfield
What else we do in Radfield
When to call us in Radfield
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. As it does, timber shrinks and joints open and the sealant has to cope with the movement.
Most people get in touch after spotting something like this:
- Beads laid onto grit and dust from the build
- Kitchen sealant that has pulled off the wall
- Plot mastic for developers ahead of handover
- Untidy sealant flagged on a snagging list
If you’ve bought a new home near Teynham station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing
- Whether the sealant suits the joint
- Who does the work, and how experienced they are
The process
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself generally takes a few hours for most snagging lists, longer for a run of plots, depending on how much there is to do. For a village or hamlet like Radfield, the journey is planned in advance: 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.
- Each joint is checked for movement before any work starts.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Mention any tricky access
- Clear the area around the work
- Let us know if you’ve seen damp or leaks
How to get a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we will take it from there.
Related advice
Radfield: your questions answered
Do you cover Radfield for new build mastic?
Yes. Our work covers London and the South East, and Radfield is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will send you a clear quote.
Will you come out to Radfield?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Why does sealant fail so quickly in new builds?
There are usually two causes: the house moving as it dries, and sealant that never bonded properly. Cutting it out and resealing properly fixes both.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Do you work for landlords and businesses?
Yes, regularly. We can quote for several properties at once.
Do you have insurance?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
What does new build mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Landlords, agents and businesses in Radfield
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What new build mastic looks like in Radfield
Radfield is within about 3 miles of the coast. New homes near the sea put their outside mastic to work from day one, so any gaps are best picked up early. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Around Radfield, as everywhere, new build mastic is only as good as the preparation behind it.
Radfield is about 2 miles east of Sittingbourne, in Kent. Wherever you are in the ME9 postcode area, we cover new build mastic for homes and businesses. We cover 922 towns and villages across Kent, from the larger towns to small villages. You can also see our page for Chelmsford, roughly 31 miles from Radfield.
Our applicators cover all of ME9 for new build mastic. Other places close to Radfield include Bogle (1 mile south-east), Tonge Corner (1 mile north), Rodmersham (1 mile south-west), Lynsted (1 mile south) and Bapchild (1 mile south-west). Within a short drive, we also cover Maidstone (12 miles west), Ashford (14 miles south), Canterbury (13 miles east), Whitstable (11 miles east), Faversham (5 miles east) and Herne Bay (15 miles east).
Near you in Radfield
We work in homes and buildings around Sittingbourne Community College and Fox pub. For rail, the closest station is Teynham station, about 0.9 miles east of the centre. Nearby you’ll also find Bayford Court (2 miles north-west) and Sittingbourne Heritage Museum (1.9 miles west).
Surface by surface
Show homes
Bathrooms, kitchens and frames in show homes are sealed or resealed to a neat finish ready for viewings. Tell us when the home is open so we can plan around it.
Bathrooms and en suites
Baths, showers, basins and trays in new bathrooms are the most common new-build reseal. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.