Southampton · England
New Build Mastic in Chartwell Green
Specialist new build mastic for Chartwell Green: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Cracked sealant around new window and door frames
- Beads laid onto grit and dust from the build
- Cracks appearing as a new home settles
Do you need new build mastic in Chartwell Green?
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. Drying timber shrinks and pulls joints apart, and sealant that can’t keep up splits.
People usually contact us after spotting one of these:
- Worktop and upstand sealant coming away
- Cracked sealant around new window and door frames
- Plot mastic for developers ahead of handover
- Messy sealant that spoils new finishes
In and around Chartwell Green, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- How long the guarantee is
- Whether they seal over old material or remove it
- When the joint can take water or movement
- Whether you can choose the colour
About our new build mastic in Chartwell Green
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 skirting & floors, show homes and bathrooms & en suites, and common reasons people get in touch are gaps behind new kitchen upstands and sealant applied over dusty or wet surfaces.
If you’ve bought a new home in or near Chartwell Green, the first year or two is a good time to check the sealant. Common snags include open skirting joints, lifting shower seals and gaps around frames.
Every job is covered by a one-year guarantee, wherever you are in Southampton.
- Where
- Chartwell Green (SO18, SO30)
- Wider area
- Southampton
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Chartwell Green
I let a flat near Swaythling station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Chartwell Green?
Yes, Chartwell Green 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.
Do you work for developers?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send us the plot schedule and we’ll quote.
How long will you be here?
That depends on how much there is to do, but most jobs take anything from a few hours to several days, depending on the number of plots. We will give you a better idea when we quote.
Is it messy?
We keep the work tidy. We protect what’s around the joints.
When is the best time to reseal in a new build?
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.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Record problems with dated photos
- Watch for new gaps as the house dries out
- Raise failed sealant with the developer while you’re covered
- Follow the cure time we give you
Clean the sealant with a mild detergent and a soft cloth. Keep scourers and harsh chemicals off it.
Lifting sealant traps moisture and mould behind it. Resealing before mould gets in saves a harder job later.
Quotes for new build mastic in Chartwell Green
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- Whether the work is at height
- Any mould that needs treating
- The size of the job
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
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.
Joints and finishes in Chartwell Green homes
London and the South East are among 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 Swaythling station, the sealant around baths, showers and frames is worth checking in the first year or two.
Chartwell Green is about 2 miles north-east of Southampton, in Southampton. Wherever you are in the SO18 postcode area, we cover new build mastic for homes and businesses. Our area takes in 40 places across Southampton, large and small.
We work across SO18 and SO30 for new build mastic. We cover properties on Ivy Lane, Arun Road and Eden Road and the roads around them. Nearby, we also carry out new build mastic in Townhill Park (1 mile west), West End (1 mile east), Midanbury (1 mile south-west), Mansbridge (1 mile north-west) and Harefield (1 mile south). We also work in nearby towns such as Shirley (4 miles west), Regents Park (4 miles west), Maybush (4 miles west), Woolston (3 miles south-west), Coxford (4 miles west) and Freemantle (4 miles west). Being one of Southampton’s larger places, Chartwell Green has homes, rented property and businesses of every kind.
What’s near Chartwell Green
Around Chartwell Green, our work takes us to homes and buildings near Itchen Valley Country Park, Bitterne Park School and The Gregg School. For rail, the closest station is Swaythling station, roughly 1.4 miles north-west of the centre. A little further out are Netley Castle (3.7 miles south) and Marlands Shopping Centre (2.9 miles south-west). Green spaces nearby include Netley Common.
Can I do it myself?
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.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What the job involves on each surface
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. We reseal once the old bead is fully out and baths are filled before sealing.
Show homes
We seal show-home bathrooms, kitchens and frames to a tidy standard. Tell us when the home is open so we can plan around it.
The process
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the number of plots. For a job in Chartwell Green, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as 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.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
How to prepare
- Tell us about any water getting in
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear quote before any work starts.