Kent · England
Tonbridge New Build Mastic
We cover Tonbridge for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Joints pulling apart as timber shrinks
- Frame joints opening as the plaster dries
- Untidy sealant flagged on a snagging list
New build mastic in Tonbridge: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Around Tonbridge, as everywhere, new build mastic is only as good as the preparation behind it.
Tonbridge is about 12 miles south-west of Maidstone, in Kent. Wherever you are in the TN9 postcode area, we cover new build mastic for homes and businesses. Tonbridge is one of 922 places in Kent where we work for new build mastic. We also work in Crawley, around 21 miles away.
Here we cover the TN9, TN10 and TN11 postcode area for new build mastic. Streets in the area include High Street, Old London Road and London Road. Main roads around Tonbridge include the A26 and A227, so getting to you is simple. Nearby, we also carry out new build mastic in Lower Haysden (2 miles south-west), Leigh (3 miles west), Bidborough (3 miles south-west), Southborough (3 miles south) and Printstile (3 miles south-west). Larger places within reach include Maidstone (12 miles north-east), Sevenoaks (7 miles north-west), Royal Tunbridge Wells (4 miles south), Swanley (14 miles north), Kings Hill (7 miles north-east) and Foley Park (12 miles north-east).
What’s near Tonbridge
We work in homes and buildings around Haysden Country Park, Royal Rise Primary School and Hillview School for Girls and the streets around them. For rail, the closest station is Tonbridge station, about 0.6 miles south-west. Well-known places in the area include The Milne Museum (under half a mile west) and Tonbridge Castle (less than half a mile south-west). Green spaces nearby include Tudeley Woods RSPB reserve and Barden Lake.
How we handle new build mastic in Tonbridge
Some new-home owners let the house settle before resealing. For small cosmetic gaps, that’s reasonable, but a failed shower or bath seal shouldn’t wait. If you are dealing with new-build shower sealant that has already split and cracks appearing as a new home settles, we can help.
Small business units and shops in a town like Tonbridge have floors that take heavy wear. Joints at thresholds and in tiled or concrete floors need resealing before the edges start to break up.
Whatever the size of the job, you get the same one-year guarantee.
- Where
- Tonbridge (TN9, TN10, TN11)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to several days, depending on the number of plots. Parking in a town like Tonbridge is normally straightforward, but tell us if there’s a driveway or any restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- 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.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we’re working on
- Tell us about any water getting in
Get a quote
Every job is quoted individually, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job and send photos if you have them.
Related advice
Leave it or put it right?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it can’t bond to what’s underneath. A lasting seal starts with removing the old one completely. In Tonbridge, as anywhere, most leaks start as a small gap in a joint, and early is when they’re cheapest and quickest to sort.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Why book with us
- Rated 4.9 stars on Google
- White, clear, grey or coloured to suit, where the product allows
- Experience in homes, commercial sites and hotels
- Sealant colour chosen to suit
Read how sealant jobs are priced or our reviews.
DIY versus a professional finish
If you’re 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 fails, we can still redo it.
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Signs you need new build mastic in Tonbridge
Not every new-build joint gets the right sealant: caulk where water collects, or a rigid product on a moving joint. Both fail early.
Signs it’s time to call us include:
- Untidy sealant flagged on a snagging list
- Gaps behind new kitchen upstands
- Internal frame sealant that has split
- Gaps between new skirting and floors
For new homes near Tonbridge station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- Whether you can choose the colour
- Is VAT in the price?
- Is the old sealant removed completely?
- How long to leave it before use
Questions from Tonbridge
Do you cover Tonbridge for new build mastic?
Yes, Tonbridge is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
What guarantee comes with new build mastic in Tonbridge?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Why does sealant fail so quickly in new builds?
There are normally two causes: movement as the house dries and settles, and sealant laid onto dust without primer. Cutting it out and resealing properly fixes both.
How long does new build mastic take?
That depends on how much there is to do, but as a guide it takes a few hours for most snagging lists, longer for a run of plots. We’ll tell you when we quote.
Will you just run a new bead over the existing one?
No. We always remove the existing bead, the joint cleaned and primed where needed, and a new bead applied.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels across Kent.
When something else is needed
It helps to know what we can’t do too:
- Leaks from pipes, valves or wastes, which need a plumber
- Damaged fittings that need replacing
- Your warranty claim itself, which is between you and the builder
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Show homes
- Kitchens
- Skirting & floors
- Bathrooms & en suites
- Windows & doors
- Plot handovers
Landlords, agents and businesses in Tonbridge
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Ventilate bathrooms well, especially in the first year
- Put sealant faults on your snagging list early
- Keep water off fresh sealant until it has cured
- Clean sealant with mild detergent, not abrasives
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
A seal that splits early is often a sign of movement. Have it resealed, and the tray or bath checked, before it gets worse.