Kent · England
New-build mastic & snagging in Farningham, Kent
Plot mastic for developers and snagging failed sealant in new homes in Farningham, with a one-year guarantee on every job. Ask us for a quote.
- Internal frame sealant that has split
- Second-fix sealing on new plots
- Skirting joints opening in the first winter
What affects the cost of new build mastic
We don’t publish a price list, because jobs vary so much. The quote depends on:
- Which sealant suits the joint
- Whether the work is at height
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Pictures of the joints, sent by email
- The type of property
- The address or postcode of the job
- The rough size of the job
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job.
New build mastic in Farningham
Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the new bead bonds properly instead of bonding to the dust. Typical jobs include new-build shower sealant that has already split and beads laid onto grit and dust from the build, on skirting & floors, show homes and kitchens.
Somewhere as small as Farningham, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Farningham (DA4)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Broken tiles or a split tray
- Deciding who is responsible under a builder’s warranty
- Settlement cracks that need a surveyor
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
Surfaces we seal
- Bathrooms & en suites
- Skirting & floors
- Plot handovers
- Windows & doors
- Show homes
- Kitchens
Do you need new build mastic in Farningham?
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart.
If you can see any of these, it’s time to have the joints looked at:
- Gaps behind new kitchen upstands
- Joints pulling apart as timber shrinks
- Leaking shower tray seals in a new home
- Cracked sealant around new window and door frames
If you’ve bought a new home near Eynsford station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- How the joint is cleaned and prepared
- Which sealant they’ll use, and why
- Which colour the sealant will be
- What insurance they hold
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. It normally takes anything from a few hours to several days, depending on the number of plots. In a small place like Farningham, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- Failed or untidy sealant is cut out completely.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, phone 0345 464 0079 or send us an email.
Advice
Aftercare tips
Aftercare is simple:
- Follow the cure time we give you
- Do not wait for the house to settle if water is getting through
- Watch for new gaps as the house dries out
- Avoid running a DIY bead over the old one
Keep the bathroom ventilated, especially in the first year. Run the fan or open a window after bathing to help keep mould away.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in saves a harder job later.
Surface by surface
Skirting and floors
As timber and screed dry, skirting and floors shift. We use a flexible product rather than caulk painted or coloured to suit.
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.
Farningham: your questions answered
Will you come out to Farningham?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Eynsford station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Are you fully insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can you reseal over the builder’s sealant?
No. The old sealant is cut out fully, the joint cleaned and primed where needed, and a new bead applied.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Nearby places to Farningham
Other services in Farningham
New homes and floors in Farningham
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 Farningham, as everywhere, new build mastic is only as good as the preparation behind it.
Farningham is about 5 miles south of Dartford, in Kent. Across the DA4 area, our applicators can take on new build mastic. Farningham is one of 922 towns and villages in Kent we cover. London is on our list too, around 16 miles away.
Here we cover the DA4 postcode area for new build mastic. Local streets include High Street, London Road and South Hall Close, all of which we cover. Close by, we work in Eynsford (1 mile south-west), Horton Kirby (1 mile north-east), Maplescombe (2 miles south-east), Speed Gate (2 miles east) and Fawkham Green (3 miles east). Within a short drive, we also cover Maidstone (15 miles south-east), Dartford (5 miles north), Sevenoaks (7 miles south), Gravesend (8 miles north-east), Tonbridge (13 miles south) and Northfleet (7 miles north-east).
Local landmarks in Farningham
We work in homes and buildings around Pied Bull pub and the streets around them. The closest station to Farningham is Eynsford station, roughly 1.4 miles south-west. Nearby you’ll also find Eynsford Castle (0.7 miles south-west) and Darenth Park Hospital (4.2 miles north). Open spaces near Farningham include The Warren.