Hampshire · England
Hillstreet New Build Mastic
New build mastic across Hillstreet and nearby, with every bit of old sealant taken out first.
- Shower seals failing in the first year or two
- Frame joints opening as the plaster dries
- Kitchen sealant that has pulled off the wall
New build mastic in Hillstreet, done properly
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, and sealant applied in a hurry at handover can split. Typical jobs include gaps between new skirting and floors and second-fix sealing on new plots, on plot handovers, show homes and bathrooms & en suites.
Work in a small place like Hillstreet just needs the journey and access planning, and the work itself is the same as on any site.
Your job is guaranteed for a year, as with all our work.
- Location
- Hillstreet (SO40)
- Region
- Hampshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Hillstreet
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. As it does, timber shrinks and joints open, and sealant that cannot keep up splits.
These are the problems we’re asked about most:
- Smeared, uneven beads picked up at snagging
- Second-fix sealing on new plots
- Beads laid onto grit and dust from the build
- Cracked sealant around new window and door frames
Around Hillstreet, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- Whether VAT is included
- How the joint is cleaned and prepared
- Are they insured?
- Whether they seal over old material or remove it
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Leave it or put it right?
A tube of sealant from the DIY shop won’t fix the cause: grit, unprimed surfaces and old layers underneath. Cutting out, cleaning and priming are what make the difference. In a small place like Hillstreet, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why us?
- Tidy, careful work
- White, clear, grey or coloured to suit, where the product allows
- Colour picked to suit the job
- Any old sealant cut out fully, not covered over
FAQs for Hillstreet
Do you cover smaller places like Hillstreet?
Yes, Hillstreet is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you work for landlords with property near Totton station?
Yes. We work for letting agents and landlords as well as householders. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Should I go to my builder first?
While the snagging or warranty period runs, the builder should be your first contact. If they’re slow or the fix doesn’t last, we can help.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or send us an email.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Should I wait before resealing?
Where water is getting through, do not wait. Hairline cosmetic gaps can wait until the house has settled.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
The process
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours in a single home. For a village or hamlet like Hillstreet, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- New sealant suited to each joint is applied and tooled neatly.
- Finally, each room is checked and you’re given the cure time.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
Advice
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Avoid running a DIY bead over the old one
- Use the extractor fan every time you shower
- Keep pictures and emails about snagging items
- Put sealant faults on your snagging list early
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries, and they’re simple to reseal once movement has slowed.
Report failed sealant to the builder while you’re in the snagging period. After that, putting it right may fall to you so report it promptly.
Towns and villages near Hillstreet
Also in Hillstreet
New homes and floors in Hillstreet
Hillstreet 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. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Totton station, it’s worth checking the sealant early, while snags are still fresh.
Hillstreet is about 2 miles north of Totton, in Hampshire. Hillstreet gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Hillstreet is one of 683 towns and villages in Hampshire where we work for new build mastic. Our Southampton page covers work nearby, about 6 miles away.
We cover every part of the SO40 postcode area for new build mastic. We also cover Ower (1 mile west), Wigley (1 mile north-west), Totton (2 miles south), Winsor (2 miles south-west) and Netley Marsh (2 miles south). We also work in nearby towns such as Winchester (12 miles north-east), Eastleigh (8 miles east), Fareham (15 miles south-east), Chandler's Ford (6 miles north-east), Hedge End (9 miles east) and Lymington (13 miles south).
Around Hillstreet
The nearest railway station is Totton station, about 2.3 miles south-east of the centre. A little further out are Tatchbury Mount Hospital (1.1 miles south-west) and Eling Experience (2 miles south-east). The countryside around Hillstreet includes Testwood Lakes.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Plumbing faults behind the sealant
- Disputes or warranty claims with your builder
- Baths and trays that move too much for sealant to cope with
If in doubt, call 0345 464 0079 or email us and we will say what we think before you book.
Where we work in Hillstreet
- Kitchens
- Show homes
- Windows & doors
- Plot handovers
- Bathrooms & en suites
- Skirting & floors
Landlords, agents and businesses in Hillstreet
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.