Kent · England
New Build Mastic in Walmer
New build mastic across Walmer and nearby, with old sealant always removed completely and a one-year guarantee.
- Gaps opening as the house dries out and settles
- Worktop and upstand sealant coming away
- Plot mastic for developers ahead of handover
New build mastic for homes and businesses in Walmer
Across Walmer, we work for both new-home owners and the builders handing those homes over. Whether it’s one en suite or a run of plots, the method is the same: remove, clean, prime where needed, then a neat new bead. If you have cracked caulk along new skirting and gaps opening as the house dries out and settles, we can help, on show homes, skirting & floors and windows & doors alike.
In and around Walmer, floors range from older timber boards to tiles and newer finishes, each moving in its own way. The sealant at skirtings and thresholds has to suit the floor it meets.
Your job is guaranteed for a year, as with all our work.
- Place
- Walmer (CT14)
- Region
- Kent
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Joints and finishes in Walmer homes
Walmer is close to the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so any gaps are best picked up early. 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 Walmer station, it’s worth checking the sealant early, while snags are still fresh.
Walmer is about 6 miles north-east of Dover, in Kent. Jobs in Walmer get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, and Walmer is one of them. Our Chelmsford page covers work nearby.
Jobs for new build mastic in CT14 is quoted and booked the same way as anywhere else. You’ll find streets such as Lawn Road, York Road and Grams Road, all of which we cover. With the A258 close by, Walmer is easy for our applicators to reach. Neighbouring places we cover for new build mastic include Deal (1 mile north), Mill Hill (1 mile north-west), Great Mongeham (2 miles north-west), Sholden (2 miles north-west) and Ripple (2 miles west). Further out, we also cover Canterbury (15 miles west), Margate (12 miles north), Dover (6 miles south-west), Folkestone (13 miles south-west), Ramsgate (9 miles north) and Broadstairs (11 miles north).
Landmarks near Walmer
Locally, jobs take us to homes and businesses close to Goodwin Academy and The Telegraph pub, among other places. The closest station to Walmer is Walmer station, roughly 0.7 miles west. Nearby you will also find Kent Museum of the Moving Image (1.4 miles north) and Walmer Castle (less than half a mile south-east).
Common questions in Walmer
Is Walmer within the area you cover?
Yes, Walmer is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Walmer station. Can you help?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and you will get one quote.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Walmer, along with the rest of our area.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
When is the best time to reseal in a new build?
That depends on the joint. A leaking shower or bath seal should be redone straight away, while small cosmetic gaps can wait a while.
Do you work through snagging lists?
Yes. Send the list and a few photos of the sealant items. We’ll flag anything that needs another trade.
Places near Walmer
Also in Walmer
What happens if it’s left?
Resealing everything on a snagging list in one visit is usually simpler than chasing joints one at a time. It’s one visit, one quote and one set of cure times to plan around. In a smaller place like Walmer, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Why book with us
- One-year guarantee on every job
- A sealant colour to suit the surroundings
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Baths and trays that move too much for sealant to cope with
- Structural cracks in walls or ceilings
- Cracked trays, tiles or worktops
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Bathrooms & en suites
- Show homes
- Skirting & floors
- Windows & doors
- Plot handovers
- Kitchens
What the job involves on each surface
Plot handovers
Developers can send the plot schedule and specification. Sealant work across the plot is covered as agreed.
Kitchens
New-kitchen sealant is often applied in a rush. We take it out and reseal neatly, colour-matched where it shows.
What we’re called out for in Walmer
On many sites, sealant goes on in the final rush before handover. Joints are not always cleaned of dust or primed, so the bead never bonds properly.
Most people get in touch when they notice something like this:
- Beads laid onto grit and dust from the build
- Internal frame sealant that has split
- Leaking shower tray seals in a new home
- Skirting joints opening in the first winter
In and around Walmer, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- Is VAT in the price?
- Whether they’re fully insured
- Whether the sealant suits the joint
- Who turns up on the day
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Ventilate bathrooms well, especially in the first year
- Do not seal over failed sealant yourself
- Get a leaking seal dealt with right away
- Avoid scourers and strong chemicals on sealant
Keep photos of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
Report failed sealant to the builder while you are in the snagging period. Once it ends, the repair may be down to you, so raise it early.
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It generally takes anything from a few hours to several days, depending on the number of plots. A visit to Walmer 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.
- First we work through your snagging list or plot schedule with you.
- Failed or untidy sealant is cut out completely.
- Each joint is cleaned of dust and grit, then primed if required.
- New sealant suited to each joint is applied and tooled neatly.
- We check every joint and tell you how long each needs to cure.
Preparing for the visit
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.