Kent · England
Folkestone New Build Mastic
New build mastic for Folkestone and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Worktop and upstand sealant coming away
- Skirting joints opening in the first winter
- Plot mastic for developers ahead of handover
New build mastic for homes and businesses in Folkestone
A new build should have a neat, sound bead at every joint. Smeared, patchy or cracked sealant is worth sorting early, before water gets into the floor or walls. We work on plot handovers, bathrooms & en suites and kitchens, and common reasons people get in touch are shower seals failing in the first year or two and sealant work across a run of new homes.
In a town like Folkestone, older houses sit alongside newer estates, with new homes still going up on the edge of many towns. In a newer home, sealant and floor joints are generally among the first things to need attention.
Every job is covered by our 12-month guarantee, wherever you are in Kent.
- Location
- Folkestone (CT20, CT19, CT21)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Folkestone
A new house holds a lot of water from the build, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart and the sealant has to cope with the movement.
If you can see any of these, it’s time to have the joints looked at:
- Internal frame sealant that has split
- Leaking shower tray seals in a new home
- Messy sealant that spoils new finishes
- Gaps behind new kitchen upstands
In and around Folkestone, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Which sealant they’ll use, and why
- How the colour is chosen
- Whether all the old sealant comes out first
- How the surfaces are prepared before sealing
Different surfaces, different methods
Bathrooms and en suites
En suite showers are a common source of leaks into the room below. Resealing properly keeps water where it belongs.
Show homes
In a show home, the sealant is on display. Every bead is neat and coloured to suit the room.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Wait for the cure time before using a resealed shower
- Open a window or run the fan after bathing
- Get a leaking seal dealt with straight away
- Put sealant faults on your snagging list early
Don’t stand on the bath edge or the lip of the tray. If a bath or tray moves when you stand in it, get it looked at.
Don’t let the snagging period run out with sealant problems unreported. After that, putting it right may fall to you.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
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.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What else we do in Folkestone
The process
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to several days, depending on the number of plots. A visit in Folkestone needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- Failed or untidy sealant is cut out completely.
- We clean off dust from the build and prime the surfaces where the product needs it.
- New sealant suited to each joint is applied and tooled neatly.
- Finally, each room is checked and you are given the cure time.
Getting ready for the visit
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
Get a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
Folkestone: your questions answered
What guarantee comes with new build mastic in Folkestone?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover Folkestone for new build mastic?
Yes, Folkestone is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Can landlords and businesses book you?
Yes. We work for householders, landlords, letting agents, businesses and hotels across Kent.
Is it normal for sealant to crack in a new home?
Lots of new homes see sealant crack early. Poor preparation at handover adds to it.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
How long does new build mastic take?
As a guide, most jobs take a few hours in a single home. Bigger jobs take longer, and we’ll say how long yours will take.
What affects the quote in Folkestone
For a quick quote, just ask. The main things that affect it are:
- Any mould that needs treating
- Access and height
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it’s a home or a business
- A few photos by email, if you can
- Access, such as stairs, a lift or height
- Where the property is
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and give you a clear price.
New build mastic in Folkestone: local notes
Folkestone is close to the coast. New homes near the sea put their outside mastic to work from day one, so any gaps are best picked up early. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you’ve bought a new home near Folkestone Central station, the sealant around baths, showers and frames is worth checking in the first year or two.
Folkestone is in Kent. Our applicators cover new build mastic for homeowners, landlords and businesses in Folkestone and the surrounding area, as part of our work across Kent. Across Kent, we cover 922 places, and Folkestone is one of them. We also work in Chelmsford, about 54 miles from Folkestone.
Postcode districts we cover here for new build mastic: CT20, CT19 and CT21. If you need new build mastic at a property on Christ Church Road, Middelburg Square and Station Road or anywhere close by, our applicators can take on the job. Main roads around Folkestone include the A259 and A260, so getting to you is simple. We also cover Cheriton (1 mile west), Sandgate (1 mile south-west), Hawkinge (2 miles north), Arpinge (2 miles north-west) and Seabrook (2 miles west). Within a short drive, we also cover Ashford (14 miles west), Canterbury (14 miles north), Dover (7 miles north-east), Deal (13 miles north-east), Hythe (4 miles west) and Tower Hamlets (7 miles north-east). As one of the bigger places in Kent, Folkestone has homes, rented property and businesses of every kind.
What’s near Folkestone
In Folkestone, that means homes and buildings near The Park Inn Hotel, Lower Leas Coastal Park and The Harvey Grammar School, among other places. There’s a railway station in Folkestone itself: Folkestone Central station. A little further out are Folkestone Museum (0.7 miles south-east) and Folkestone Castle (1 mile north). Green spaces nearby include Sugar Loaf Hill.