Hampshire · England
New-build mastic & snagging in Charlwood, Hampshire
New build mastic in Charlwood from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps opening as the house dries out and settles
- Frame joints opening as the plaster dries
- Second-fix sealing on new plots
New build mastic in Charlwood
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. While the builder’s snagging or warranty period runs, report it to them first and if that stalls, we can do it. We work on show homes, kitchens and plot handovers, and people most often call us about messy sealant that spoils new finishes and sealant that never bonded to the surface.
In a village or hamlet like Charlwood, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
We stand behind the work with a one-year guarantee, so you’re covered after we have gone.
- Location
- Charlwood (SO24)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
New homes and floors in Charlwood
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.
Around Charlwood, as everywhere, new build mastic is only as good as the preparation behind it.
Charlwood is about 6 miles south-west of Alton, in Hampshire. Our applicators cover new build mastic for householders, landlords and businesses in Charlwood and the surrounding area, as part of our work across Hampshire. Charlwood is one of 683 towns and villages in Hampshire we cover for new build mastic. You can also see our page for Southampton, about 19 miles away.
Every address in SO24 is within our area for new build mastic. Nearby, we also carry out new build mastic in Monkwood (1 mile south-west), Kitwood (1 mile north-west), Gilbert Street (1 mile north-west), Ropley (2 miles west) and West Tisted (2 miles south-west). Within a short drive, we also cover Basingstoke (13 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (12 miles south) and Alton (6 miles north-east).
Near you in Charlwood
A little further out are Alton Community Hospital (4.7 miles north-east). Not far away are Red Hill and Shutts Copse.
Different surfaces, different methods
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We remove cracked sealant and apply a flexible one that suits the frame.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. Resealing properly keeps water where it belongs.
Towns and villages near Charlwood
Also in Charlwood
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours in a single home and we leave things clean and tidy. Somewhere like Charlwood needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked for movement before any work starts.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
Before we arrive
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
Ask for 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, call 0345 464 0079 or email us.
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When to call us in Charlwood
Later trades and the final clean can damage fresh sealant. A bead disturbed before it has cured may never seal properly and it shows once the home is in use.
People usually contact us when they notice one of these:
- Beads laid onto grit and dust from the build
- Joints pulling apart as timber shrinks
- Sealant work across a run of new homes
- Shower seals failing in the first year or two
For jobs in and around Charlwood, choosing the right material for each joint is as important as a tidy finish.
What your quote should include
- Whether you can choose the colour
- What preparation is included
- Whether they’re fully insured
- Whether the sealant suits the joint
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you’re set on DIY, put the effort into 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.
FAQs for Charlwood
Do you cover smaller places like Charlwood?
Yes. Charlwood is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is new build mastic in Charlwood guaranteed?
All our work, in Charlwood and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
How long will you be here?
Typically it takes anything from a few hours to several days, depending on the number of plots. Bigger jobs take longer, and we’ll tell you how long to expect.
Can tenants book the work?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Where are you based?
We work from Crawley. Our applicators cover Charlwood.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
What do you need from me for a quote?
A short description and the location. If we need more, we’ll ask.
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 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Charlwood and across Hampshire. We can quote a run of properties together, and we’re fully insured.
What affects the cost of new build mastic
The quote reflects the job in front of us. We look at:
- Access and height
- The product the joint needs
- The size of the job
- The old material and how stubborn it is
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Asking for a quote
When you call or email, it’s useful to know:
- The address or postcode of the job
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or drop us an email with the details.
Why act early in Charlwood
A failed shower or bath seal in a new home lets water into floors and walls that are still drying out. Resealing promptly protects the new finishes around it. Older cottages and farmhouses around Charlwood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- Fully insured
- Quality sealants from Arbo and Everbuild
- Old sealant always removed completely
Take a look at our cost guide or what customers say.