Kent · England
New-build mastic & snagging in Bonnington, Kent
New build mastic in Bonnington from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Plot mastic for developers ahead of handover
- Cracked caulk along new skirting
- Worktop and upstand sealant coming away
What we are called out for in Bonnington
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes do not always leave time for joints to dry first.
The most common problems we see are:
- Leaking shower tray seals in a new home
- Kitchen sealant that has pulled off the wall
- Sealant work across a run of new homes
- Cracks appearing as a new home settles
For new homes near Ham Street station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- Which sealant they’ll use, and why
- Are they insured?
- How long to leave it before use
- Whether they seal over old material or remove it
New build mastic in Bonnington, done properly
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. In both, preparation makes the difference. If you have internal frame sealant that has split and new-build shower sealant that has already split, we can help, whatever the surface.
Work in a small place like Bonnington just needs the journey and access planning, and once on site, the job is the same as anywhere.
Big or small, it’s backed by our one-year guarantee in Bonnington and across Kent.
- Where
- Bonnington (TN25)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
New homes and floors in Bonnington
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Bonnington, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Bonnington is about 5 miles south-east of Ashford, in Kent. Every kind of property in Bonnington can book us for new build mastic, old or new, large or small. The work is guaranteed for a year. We cover 922 towns and villages across Kent, large and small. We also work in Crawley, about 49 miles from Bonnington.
Every address in TN25 is covered for new build mastic, from the main roads to the quietest streets. If you need new build mastic at a property on Cherry Orchard Lane and Bourne Road or anywhere close by, we can help. Nearby, we also carry out new build mastic in Aldington (1 mile north-east), Clap Hill (1 mile north-east), Aldington Frith (1 mile north-west), Stonestreet Green (1 mile north-east) and Postling Green (1 mile east). Larger places within reach include Ashford (5 miles north-west), Canterbury (15 miles north-east), Folkestone (10 miles east), Hythe (7 miles east), Hawkinge (10 miles east) and Wincheap (14 miles north-east).
Near you in Bonnington
Typical jobs here are in homes near Poulton Wood and Walnut Tree Inn and the streets around them. For rail, the closest station is Ham Street station, about 3.6 miles west of the centre. Other landmarks nearby include William Harvey Hospital (3.8 miles north) and Lympne Castle (4.2 miles east). Not far away are Hatch Park.
What the job involves on each surface
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. The joint is stripped back before the new bead goes in with baths filled first.
Kitchens
Sink joints are wet all the time. We use a sealant suited to kitchens.
Nearby places to Bonnington
What else we do in Bonnington
What happens on the day
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. Most jobs take a few hours for most snagging lists, longer for a run of plots. Somewhere like Bonnington needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
- On commercial sites, let us know about site rules
Getting a quote
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job and send pictures if you have them.
Related advice
Bonnington: your questions answered
Is Bonnington in your area for new build mastic?
Yes, Bonnington is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Will you come out to Bonnington?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you reseal over the builder’s sealant?
No. New silicone will not bond to old silicone, so it soon lifts and traps water. The old sealant always comes out first.
Will you leave 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 take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Should I go to my builder first?
If you’re still within the builder’s snagging or warranty period, report it to them first. If it isn’t sorted, or keeps failing, get in touch with us.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Do you work through snagging lists?
Yes. We often work straight from a snagging list. We agree the sealant items with you before work begins.
What happens if it’s left?
Sealant done properly at handover means fewer callbacks. Snagging visits for failed sealant cost time on every plot and most come down to preparation. In a small place like Bonnington, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
The cost 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 work begins.
Why choose Mr Mastic in Bonnington
- A choice of colours where the product allows
- ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- We leave the area clean and tidy
How we quote for new build mastic
Every job gets its own quote. These are the things that affect it:
- The product the joint needs
- How much old sealant there is and how hard it is to remove
- The size of the job
- Whether there’s mould to deal with
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Asking for a quote
Before you ask for a quote, have a think about:
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
- Whether it has been sealed before
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or email us.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.