Kent · England
New-build mastic & snagging in Riverhead, Kent
Plot mastic for developers and snagging failed sealant in new homes for homeowners, landlords and businesses in Riverhead. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Sealant applied over dusty or wet surfaces
- Worktop and upstand sealant coming away
- Messy sealant that spoils new finishes
How we handle new build mastic in Riverhead
Some new-home owners let the house settle before resealing. That makes sense for small gaps that are just cosmetic, but a seal that is letting water through needs doing now. We work on kitchens, windows & doors and plot handovers, and people most often call us about new-build shower sealant that has already split and sealant applied over dusty or wet surfaces.
Where new homes go up in smaller places like Riverhead, it’s often a small development or a single plot. Each still needs its sealant and floor joints finished properly from day one.
Our work is backed for twelve months.
- Location
- Riverhead (TN13, TN14)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Put sealant faults on your snagging list early
- Get a leaking seal dealt with straight away
- Photograph failed sealant before it’s redone
- Do not seal over failed sealant yourself
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
Lifting sealant traps moisture and mould behind it. Resealing before mould gets in keeps the job straightforward.
Leave it or put it right?
If you’re still in the builder’s snagging or warranty period, ask them to put it right first. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. Homes in smaller places like Riverhead can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why book with us
- Trusted Arbo and Everbuild sealants
- 4.9 on Google from 180+ five-star reviews
- White, clear, grey or another colour, product permitting
- You choose the colour before work begins
See our cost guide or customer reviews.
New build mastic in Riverhead: local notes
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Sevenoaks station, it’s worth checking the sealant early, while snags are still fresh. In and around Riverhead, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Riverhead is about 1 mile west of Sevenoaks, in Kent. If you need new build mastic in Riverhead, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We’re based in Crawley and cover Kent. Across Kent, we cover 922 places, Riverhead among them. For nearby work, see our London page (19 miles or so).
Every address in TN13 and TN14 is within our area for new build mastic, from the main roads to the quietest streets. Streets in the area include London Road, Hamlin Road and Witches Lane, all of which we cover. We also cover the places around Riverhead: Dunton Green (1 mile north), Bessels Green (1 mile south-west), Sevenoaks (1 mile east), Chipstead (1 mile west) and Kippington (1 mile south). Further out, we also cover Maidstone (15 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (14 miles north-east), Tonbridge (8 miles south-east) and Northfleet (13 miles north-east).
What’s near Riverhead
In Riverhead, that means homes and buildings near The Beehive Public House, Trinity School and Montreal Park, among other places. The closest station to Riverhead is Sevenoaks station, about 0.8 miles south-east of the centre. Other landmarks nearby include Kemsing Castle Bank (3 miles north-east) and Sevenoaks Museum (1.4 miles south-east). Green spaces nearby include Dryhill Nature Reserve and Betsom's Hill.
Towns and villages near Riverhead
What else we do in Riverhead
Common questions in Riverhead
Will you come out to Riverhead?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Sevenoaks station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Do you use white or clear sealant?
We use white, clear or a colour to suit the finishes. Tell us what you’d like when you get a quote.
What does new build mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can you reseal over the builder’s sealant?
No. Sealing over old sealant looks fine for a few weeks, then lifts. We remove every bit of the old bead before resealing.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours in a single home. For a job in Riverhead, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
Advice
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What we can’t put right
In fairness, there are a few things sealant will not fix:
- Baths and trays that move too much for sealant to cope with
- Leaks from pipes, valves or wastes, which need a plumber
- Broken tiles or a split tray
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Kitchens
- Plot handovers
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Windows & doors
Quotes for new build mastic in Riverhead
The price is agreed before any work begins. It takes into account:
- Whether the work is at height
- The old material and how stubborn it is
- The type of sealant required
- The number and length of the joints
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Photos by email, if that is easy
- If someone has resealed it before
- The problem you’ve noticed
- The type of property
Getting a quote is simple: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we will take it from there.