Kent · England
New Build Mastic in Lashenden
Our applicators work in Lashenden on 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.
- Plot mastic for developers ahead of handover
- Beads laid onto grit and dust from the build
- Untidy sealant flagged on a snagging list
New build mastic in Lashenden
Some owners wait for the first year’s movement before having joints redone. That makes sense for small gaps that are just cosmetic, but a failed shower or bath seal shouldn’t wait. If you have new-build shower sealant that has already split and frame joints opening as the plaster dries, we can help.
Older homes in small places like Lashenden often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
Whatever the size of the job, you get the same one-year guarantee in Lashenden and across Kent.
- Where
- Lashenden (TN27)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Nearby places to Lashenden
Also in Lashenden
What affects the cost of new build mastic
We quote each job individually. This is what makes a difference:
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- Any working-time requirements on site
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- Roughly how big the job is
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Lashenden questions
Do you cover smaller places like Lashenden?
Yes. Lashenden is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do new build mastic in Lashenden?
Yes. We work across London and the South East, and Lashenden is part of that. You can call 0345 464 0079 or email us and let us know what needs doing.
How much does new build mastic cost in Lashenden?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we’ll talk you through it.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
My new home is still under warranty. Should I contact you?
Start with your builder while their snagging or warranty period runs. If that doesn’t work out, we’re happy to quote.
Can tenants book the work?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
What we are called out for in Lashenden
Sealant applied onto damp surfaces does not bond well. Site programmes don’t always leave time for joints to dry first.
These are the problems we are asked about most:
- Internal frame sealant that has split
- Worktop and upstand sealant coming away
- Gaps between new skirting and floors
- Second-fix sealing on new plots
In and around Lashenden, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Who does the work, and how experienced they are
- What happens if the job turns out different
- What product goes in the joint
- How long the guarantee is
What new build mastic looks like in Lashenden
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.
If you’ve bought a new home near Headcorn station, the sealant around baths, showers and frames is worth checking in the first year or two.
Lashenden is about 10 miles west of Ashford, in Kent. Whether you’re in the middle of Lashenden or further out, new build mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Lashenden is one of 922 places in Kent where we work for new build mastic. You can also see our page for Crawley, roughly 36 miles from Lashenden.
Our applicators cover all of TN27 for new build mastic. If you need new build mastic at a property on Bell Lane and Frittenden Road or anywhere close by, we can help. Nearby, we also carry out new build mastic in Standen (1 mile south-east), Curteis' Corner (1 mile south), Monk's Hill (1 mile east), Hareplain (2 miles south-west) and Smarden Bell (2 miles north-east). We also work in nearby towns such as Maidstone (10 miles north-west), Ashford (10 miles east), Sittingbourne (15 miles north), Kings Hill (14 miles north-west), Foley Park (11 miles north-west) and Paddock Wood (11 miles west).
Near you in Lashenden
For rail, the closest station is Headcorn station, about 1.8 miles north. Well-known places in the area include Kent Firefighting Museum (1.2 miles west) and Romden Castle (2.9 miles east).
What the job involves on each surface
Plot handovers
Taking time over preparation reduces return visits. Dust from the build is removed first.
Skirting and floors
New homes often develop a gap between skirting and floor. We seal it with a flexible sealant that copes with the movement.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours in a single home and we leave things clean and tidy. Somewhere as small as Lashenden, access is often the only tricky part. 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.
- We cut out every bit of the failed or messy sealant.
- We clean off dust from the build and prime the surfaces where the product needs it.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
Getting a quote
If you’re in Lashenden and need new build mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Read more
Aftercare tips
After the cure time, these simple habits help:
- Keep pictures and emails about snagging items
- Put sealant faults on your snagging list early
- Get a leaking seal dealt with straight away
- Keep water off fresh sealant until it has cured
Keep pictures of the joints and any snagging correspondence with your builder. It’s useful if you need to raise other issues later.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left over time.