Kent · England
New-build mastic & snagging in Newnham, Kent
New build mastic for Newnham, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Kitchen sealant that has pulled off the wall
- Internal frame sealant that has split
- Joints pulling apart as timber shrinks
New build mastic in Newnham, done properly
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. Both get the same care over preparation. We work on kitchens, bathrooms & en suites and show homes, and the jobs we see most are gaps opening as the house dries out and settles and kitchen sealant that has pulled off the wall.
Older homes in small places like Newnham often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
Every job is covered by a 12-month guarantee, wherever you are in Kent.
- Location
- Newnham (ME9)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Keep pictures and emails about snagging items
- Open a window or run the fan after bathing
- Wipe joints with warm soapy water
- Do not seal over failed sealant yourself
Keep the bathroom ventilated, especially in the first year. Run the fan or open a window after bathing to help keep mould away.
Lifting sealant traps moisture and mould behind it. Resealing before mould gets in saves a harder job later.
DIY versus a professional finish
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Common problems we fix in Newnham
Once people move in, baths and trays take weight and bed down. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used.
Any of these means the joints need attention:
- Skirting joints opening in the first winter
- New-build shower sealant that has already split
- Cracks appearing as a new home settles
- Beads laid onto grit and dust from the build
In and around Newnham, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- How the surfaces are prepared before sealing
- How much experience the applicator has
- What the quote includes, VAT included or not
- Whether they’re fully insured
How we quote for new build mastic
Jobs vary more than people expect. What affects the quote:
- The old material and how stubborn it is
- Whether there’s mould to deal with
- How easy the joints are to reach
- Which sealant suits the joint
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and give you a clear quote before any work starts.
Helping us quote
When you contact us, it’s useful to know:
- If someone has resealed it before
- Where the job is, and your postcode
- How we’d reach the joints
- Photos by email, if that is easy
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
What sealant work cannot fix
We will always be straight with you, so here’s what new sealant won’t do:
- Damaged fittings that need replacing
- Disputes or warranty claims with your builder
- Structural cracks in walls or ceilings
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Skirting & floors
- Show homes
- Kitchens
- Windows & doors
- Plot handovers
- Bathrooms & en suites
How it works
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a few hours for most snagging lists, longer for a run of plots. In a small place like Newnham, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- 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.
Before we arrive
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
- Let us know if you’ve seen damp or leaks
Ask for a quote
We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or send us an email with the details, and pictures are welcome.
Advice
How the job changes by surface
Kitchens
New-kitchen sealant is often applied in a rush. We remove it and reseal with a kitchen-suitable sealant.
Show homes
Tired or marked sealant in a show home can be renewed. The old bead comes out and a clean new one goes in.
FAQs for Newnham
Is Newnham within the area you cover?
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.
I let a flat near Teynham station. Can you help?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Do you use white or clear sealant?
We use white, clear or a colour to suit the finishes. Let us know your preference when you ask for a quote.
How long does new build mastic take?
Most jobs take anything from a few hours to several days, depending on the number of plots. Your quote will say how long we expect yours to take.
Can I add another job to the visit?
Yes. Just list everything you need and we’ll quote it together.
Can I send you my snagging list?
Yes. Send us the sealant items on the list, with photos if you can and we’ll give you a quote. We’ll tell you if anything on it isn’t a sealant job.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Joints and finishes in Newnham homes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
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.
Newnham is about 4 miles south-west of Faversham, in Kent. Whether you are in the middle of Newnham or further out, we cover new build mastic for every kind of property. 922 places in Kent are on our list, large and small. You can also see our page for Chelmsford, roughly 34 miles from Newnham.
Every address in ME9 is covered for new build mastic, from the main roads to the quietest streets. Streets in the area include The Street, Sharsted Hill and Newnham Lane, all of which we cover. Neighbouring places we cover for new build mastic include Doddington (1 mile west), Wichling (2 miles west), Bluetown (2 miles west), Hollybushes (3 miles west) and Payden Street (3 miles south-west). Within a short drive, we also cover Maidstone (12 miles west), Ashford (10 miles south), Canterbury (12 miles east), Sittingbourne (5 miles north-west), Whitstable (11 miles north-east) and Faversham (4 miles north-east).
What’s near Newnham
In Newnham, that means homes and buildings near The George Inn and Doddington Place Gardens and the streets around them. The nearest railway station is Teynham station, about 3.4 miles north. Nearby you will also find Newnham Castle (less than half a mile north-east).