Kent · England
New-build mastic & snagging in Ash, Kent
New-build sealant joints in Ash need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
- Skirting joints opening in the first winter
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- Which sealant suits the joint
- Whether the work is at height
- Any working-time requirements on site
- The size of the job
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
What we need to know
To make quoting easier, let us know:
- A few photos by email, if you can
- The type of property
- Roughly how big the job is
- If someone has resealed it before
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
How we handle new build mastic in Ash
New homes move as they dry out. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. We work on plot handovers, bathrooms & en suites and windows & doors, and the jobs we see most are frame joints opening as the plaster dries and untidy sealant flagged on a snagging list.
Older homes in small places like Ash often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
A 12-month guarantee comes as standard, so you’re covered after we’ve gone.
- Where
- Ash (TN15, DA3)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
New build mastic in Ash: local notes
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.
Around Ash, as everywhere, new build mastic is only as good as the preparation behind it.
Ash is about 6 miles south-west of Northfleet, in Kent. Wherever you are in the TN15 postcode area, our applicators can take on new build mastic. Ash is one of 922 towns and villages in Kent where we work. You can also see our page for London, about 19 miles away.
Every address in TN15 and DA3 is within our area for new build mastic. If you need new build mastic at a property on Ash Road, The Street and Billet Hill or a nearby road, our applicators can take on the job. We also cover the places around Ash: West Yoke (1 mile north), Fawkham Green (1 mile north-west), Speed Gate (1 mile north-west), Stansted (2 miles south) and West Kingsdown (2 miles south-west). Larger places within reach include Maidstone (12 miles south-east), Dartford (7 miles north-west), Sevenoaks (7 miles south-west), Royal Tunbridge Wells (15 miles south), Gravesend (6 miles north-east) and Tonbridge (11 miles south).
Near you in Ash
Around Ash, our work takes us to homes and buildings near The White Swan Public House, among other places. For rail, the closest station is Longfield station, roughly 2.8 miles north. Well-known places in the area include Darent Valley Hospital (5.6 miles north) and Eynsford Castle (3.6 miles west).
Other services in Ash
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
When to call us in Ash
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. As it does, timber shrinks and joints open and the sealant has to cope with the movement.
People normally contact us after spotting something like this:
- Messy sealant that spoils new finishes
- Kitchen sealant that has pulled off the wall
- Shower seals failing in the first year or two
- Beads laid onto grit and dust from the build
If you’ve bought a new home near Longfield station, the sealant around baths, showers and frames is worth checking in the first year or two.
Before you book anyone
- What preparation is included
- Is the old sealant removed completely?
- The length of the guarantee
- What happens if they find a problem under the old sealant
What happens if it’s left?
Resealing everything on a snagging list in one visit is generally simpler than chasing joints one at a time. You get one visit and one clear quote to plan around. Older cottages and farmhouses around Ash can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we’ll talk you through it.
Why Ash clients choose us
- Anti-fungal silicone where joints get wet
- A choice of colours where the product allows
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
Take a look at our cost guide or what customers say.
How it works
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the number of plots for a typical job. For a village or hamlet like Ash, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked for movement before we start.
- We remove the failed sealant and clean the joints.
- 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.
Getting ready for the visit
- Let us know about parking restrictions
- Mention any leaks or damp you’ve noticed
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
For new build mastic in Ash, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Related advice
Ash: your questions answered
Can you do new build mastic in Ash?
Yes, Ash is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Do you cover smaller places like Ash?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is it normal for sealant to crack in a new home?
New homes dry out and move in their first couple of years, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. Indoors, that generally means someone at home.
Should I wait before resealing?
For failed seals that let water through, the best time is now. For small cosmetic gaps, waiting until the house has settled can save doing them twice.
How do I get a quote for new build mastic in Ash?
Size, access and the old material all affect the cost. Call for a quick quote.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Honest limits
Sealant is not the answer to every problem, and we’ll tell you before we start. Sealant won’t put right:
- Deciding who is responsible under a builder’s warranty
- Settlement cracks that need a surveyor
- Damaged fittings that need replacing
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Where we work in Ash
- Windows & doors
- Plot handovers
- Bathrooms & en suites
- Skirting & floors
- Kitchens
- Show homes