Kent · England
New Build Mastic in South Green
New build mastic for South Green, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant work across a run of new homes
- Smeared, uneven beads picked up at snagging
- Gaps between new skirting and floors
What new build mastic looks like in South Green
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Around South Green, as everywhere, new build mastic is only as good as the preparation behind it. For new homes near Newington station, it’s worth checking the sealant early, while snags are still fresh.
South Green is about 4 miles south-west of Sittingbourne, in Kent. Our applicators cover new build mastic for homeowners, landlords and businesses in South Green. We cover 922 towns and villages across Kent. There’s also a page for Chelmsford, about 30 miles away.
All of ME9 is within our area for new build mastic. Other places close to South Green include Stockbury (1 mile north-west), Oad Street (2 miles north-east), Silver Street (2 miles east), Bredgar (2 miles east) and Danaway (2 miles north-east). Larger places within reach include Maidstone (6 miles south-west), Ashford (15 miles south-east), Sittingbourne (4 miles north-east), Gravesend (14 miles north-west), Faversham (10 miles east) and Minster (10 miles north-east).
Landmarks near South Green
Around South Green, our work takes us to homes and buildings near Stockbury Hill Wood and The Three Squirrels pub and the streets around them. The closest station to South Green is Newington station, about 3 miles north of the centre. Nearby you’ll also find Leeds Castle (4.4 miles south) and KIMS hospital (4.5 miles west). Green spaces nearby include Detling Hill.
About our new build mastic in South Green
Snagging sealant properly means taking the failed bead out completely. New silicone won’t bond to old silicone, so it all comes out before we clean, dry and reseal. We work on windows & doors, bathrooms & en suites and plot handovers, and common reasons people get in touch are leaking shower tray seals in a new home and frame joints opening as the plaster dries.
Work in a small place like South Green just needs the journey and access planning, and the work itself is the same as on any site.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Location
- South Green (ME9)
- Region
- Kent
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Also near South Green
Other services in South Green
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Look at the sealant regularly in the first couple of years
- Put sealant faults on your snagging list early
- Avoid running a DIY bead over the old one
- Record problems with dated pictures
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and the new finishes intact.
South Green questions
Is South Green within the area you cover?
Yes, we do. 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 Newington station. Can you help?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We will tell you what we’re using and why.
What does new build mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you.
Can you reseal over the builder’s sealant?
No. Fresh silicone does not stick to the old layer, so sealing over the top fails quickly. The old sealant always comes out first.
What affects the quote in South Green
The quote reflects the job in front of us. We look at:
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- The product the joint needs
- Access and height
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first.
Asking for a quote
To help us quote quickly, please include:
- If someone has resealed it before
- Pictures of the joints, sent by email
- Where the job is, and your postcode
- Any access issues, like height or stairs
If you are in South Green and need new build mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
How the visit works
The work is kept neat and contained to the joints we are treating. The job generally takes a few hours in a single home. Somewhere like South Green needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
Ask for a quote
Want a quote for new build mastic? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear quote before work begins.
Read more
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Different surfaces, different methods
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We cut out the cracked bead and reseal with a flexible sealant that suits the frame.
Plot handovers
Taking time over preparation reduces return visits. We clean out building dust before sealing and prime where the product needs it.
Landlord and commercial work in South Green
We also work for property managers and facilities teams in South Green and across Kent. We can quote a run of properties together, and we’re fully insured for the work.
For anyone letting property in or around South Green, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Why deal with it now?
DIY kits don’t solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Proper removal and preparation are what make it last. Around South Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in South Green
- We are fully insured
- Colour picked to suit the job
- An ARBOMaster approved applicator
- Rated 4.9 stars on Google
Read what affects the cost or our reviews.