Hampshire · England
New-build mastic & snagging in Fawley, Hampshire
Problem with your new-build sealant joints in Fawley? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Plot mastic for developers ahead of handover
- Messy sealant that spoils new finishes
- Cracked caulk along new skirting
How we handle new build mastic in Fawley
Developers send us the plot schedule and we work through it. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover. Typical jobs include cracked sealant around new window and door frames and sealant that never bonded to the surface, on skirting & floors, plot handovers and windows & doors.
Somewhere as small as Fawley, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Fawley (SO45)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
Small cosmetic gaps can wait for the house to settle, but a leaking seal cannot. Not sure whether yours can wait? You can ring 0345 464 0079 or drop us an email with a few photos and we will give you a straight answer. Older cottages and farmhouses around Fawley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why book with us
- Sealant colour chosen to suit
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
New homes and floors in Fawley
Fawley is close to the coast. New homes near the sea put their outside mastic to work from day one, so it’s worth checking at snagging. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Fawley, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. For new homes near Hamble station, it’s worth checking the sealant early, while snags are still fresh.
Fawley is about 3 miles south-east of Hythe, in Hampshire. If you need new build mastic in Fawley, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire, Fawley included. Fawley is one of 683 places in Hampshire we cover for new build mastic. Southampton is on our list too, around 7 miles away.
Work in SO45 is quoted and booked the same way as anywhere else. You’ll find streets such as The Square, Whites Lane and Forge Lane, all of which we cover. Other places close to Fawley include Stonehills (1 mile south-east), Ashlett (1 mile east), Sprat's Down (1 mile south), Blackfield (1 mile south-west) and Calshot (1 mile south-east). Larger places within reach include Gosport (9 miles east), Eastleigh (10 miles north), Fareham (7 miles east), Totton (9 miles north-west), Chandler's Ford (11 miles north) and Hedge End (6 miles north).
Around Fawley
We work in homes and buildings around Falcon Hotel and The New Forest Academy, among other places. Fawley’s nearest station is Hamble station, about 3.2 miles north. Nearby you will also find Coldeast (4.2 miles north-east) and Calshot Castle (1.9 miles east). The countryside around Fawley includes Mercury Marshes.
Fawley: your questions answered
Do you cover smaller places like Fawley?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Hamble station?
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.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses.
Are you fully insured?
Yes. Full insurance covers our work.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Should I go to my builder first?
If you’re still within the builder’s snagging or warranty period, report it to them first. If it isn’t sorted, or keeps failing, get in touch with us.
How to look after the new joints
Looking after new joints is easy:
- Open a window or run the fan after bathing
- Raise failed sealant with the developer while you are covered
- Don’t wait for the house to settle if water is getting through
- Keep water off fresh sealant until it has cured
Ventilation matters in a new home, which is still drying out. Run the fan or open a window after bathing to help keep mould away.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Left alone, a small crack can become a leak over time.
How the job changes by surface
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one in a matching colour.
Show homes
Bathrooms, kitchens and frames in show homes are sealed or resealed to a neat finish to a tidy standard. Tell us when the home is open so we can plan around it.
Quotes for new build mastic in Fawley
There’s no set price list, because jobs vary so much. What we look at:
- The size of the job
- Working hours on commercial sites
- Access and height
- Any mould that needs treating
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
What to tell us when you ask for a quote:
- The type of property
- Photos by email, if that’s easy
- Any access issues, like height or stairs
- If someone has resealed it before
We do not publish a price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
When it is not the sealant
To be straight with you, some problems need a different trade:
- Your warranty claim itself, which is between you and the builder
- Plumbing faults behind the sealant
- Cracking that points to a structural problem
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Fawley
- Skirting & floors
- Bathrooms & en suites
- Windows & doors
- Show homes
- Kitchens
- Plot handovers
Places near Fawley
What else we do in Fawley
How it works
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for most snagging lists, longer for a run of plots. For a village or hamlet like Fawley, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
- Tell us about any water getting in
Ask for a quote
If you are in Fawley and need new build mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Read more
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.