Kent · England
New-build mastic & snagging in Kennington, Kent
New build mastic across Kennington and nearby, with every bit of old sealant taken out first.
- Plot mastic for developers ahead of handover
- Cracked caulk along new skirting
- Shower seals failing in the first year or two
Looking after it afterwards
After the cure time, these simple habits help:
- Resist patching a failed seal with a tube from the DIY shop
- Record problems with dated photos
- Put sealant faults on your snagging list early
- Use the extractor fan every time you shower
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers.
If a shower tray or bath seal splits in the first year, look for movement. Getting it resealed properly, and any movement checked, stops it recurring.
New build mastic in Kennington, done properly
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. We work on show homes, windows & doors and skirting & floors, and the jobs we see most are cracked sealant around new window and door frames and gaps between new skirting and floors.
Homes around Kennington range from older cottages to newer houses, and their floors range just as widely, each moving in its own way. Skirting and threshold joints need a sealant that suits the floor.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Kennington (TN24, TN25)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Kennington
What else we do in Kennington
Why deal with it now?
A hairline gap at a skirting can wait, but a leaking seal cannot. Not sure whether yours can wait? You can call 0345 464 0079 or send us an email with a few pictures and we will give you a straight answer. Homes in smaller places like Kennington can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Kennington
- We never seal over old sealant
- Sanitary silicone with an anti-fungal additive in wet areas
- Quality sealants from Arbo and Everbuild
- Full insurance on every job
Read our cost guide or what customers say.
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
New build mastic in Kennington: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Around Kennington, as everywhere, new build mastic is only as good as the preparation behind it.
Kennington is about 2 miles north-east of Ashford, in Kent. Whether you’re in the middle of Kennington or further out, new build mastic is available for homes and businesses alike. Kennington is one of 922 towns and villages in Kent we cover. Chelmsford is on our list too, around 43 miles away.
Jobs for new build mastic in TN24 and TN25 works the same way as everywhere else we cover. Whether your property is on Park Road, York Road and Ball Lane or anywhere close by, our applicators can take on the job. You’ll find Kennington on the A28, so it’s easy for us to get to. We also cover Bockhanger (1 mile south-west), Potters Corner (1 mile west), Boughton Lees (2 miles north), Godinton (2 miles south-west) and Willesborough (2 miles south). Further out, we also cover Canterbury (12 miles north-east), Sittingbourne (14 miles north-west), Folkestone (13 miles south-east), Whitstable (14 miles north-east), Faversham (10 miles north) and Hythe (11 miles south-east).
What’s near Kennington
Around Kennington, our work takes us to homes and buildings near Towers School and Sixth Form Centre, Conningbrook Lakes Country Park and The Rose Inn. The nearest railway station is Ashford International station, roughly 1.7 miles south. Nearby you will also find County Square (1.4 miles south-west) and William Harvey Hospital (2.1 miles south-east). For a walk, there’s Hatch Park.
Questions from Kennington
Is Kennington 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 Ashford International station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or email us with the details for a clear quote.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Are you insured?
Yes. We’re fully insured.
Is it normal for sealant to crack in a new home?
It’s common, and there are usually two reasons: movement as the house dries and settles, and sealant laid onto dust without primer. A proper reseal deals with both.
My new home is still under warranty. Should I contact you?
Start with your builder while their snagging or warranty period runs. After that, or if their repair keeps failing, we can do it.
Should I wait before resealing?
That depends on the joint. Failed seals in wet areas need doing now, while small cosmetic gaps can wait a while.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours in a single home. A visit to Kennington is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out.
- 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.
Getting ready for the visit
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
- Let us know if you’ve seen damp or leaks
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where. A few pictures by email make the job easier to understand, and we’ll take it from there.
Read more
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
What affects the cost of new build mastic
The price is agreed before any work begins. It takes into account:
- How many areas need sealing
- Whether there’s mould to deal with
- The product the joint needs
- The old material and how stubborn it is
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- The rough size of the job
- Pictures of the joints, sent by email
Want a quote for new build mastic? Please ring 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Do you need new build mastic in Kennington?
A new house holds a lot of water from the build, which takes a year or two to dry out. As it does, timber shrinks and joints open.
The problems people generally mention when they call are:
- Cracked sealant around new window and door frames
- Leaking shower tray seals in a new home
- Messy sealant that spoils new finishes
- Beads laid onto grit and dust from the build
If you’ve bought a new home near Ashford International station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- What the cure time is
- What guarantee comes with the work
- Whether all the old sealant comes out first
- Are they insured?