Hampshire · England
New Build Mastic in Broxhill
New-build sealant joints in Broxhill need attention? We cut out the old, prepare the joints and apply the right sealant.
- Gaps between new skirting and floors
- Internal frame sealant that has split
- Gaps opening as the house dries out and settles
New build mastic for homes and businesses in Broxhill
Some new-home owners let the house settle before resealing. For small cosmetic gaps, that is reasonable, but a seal that is letting water through needs doing now. Typical jobs include cracks appearing as a new home settles and sealant applied over dusty or wet surfaces, across bathrooms & en suites, plot handovers and show homes.
Older homes in small places like Broxhill often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
A one-year guarantee comes as standard.
- Location
- Broxhill (SP6, BH21)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Signs you need new build mastic in Broxhill
Sealant is often one of the last jobs before handover. Joints aren’t always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
People normally contact us after spotting one of these:
- Skirting joints opening in the first winter
- Shower seals failing in the first year or two
- Sealant work across a run of new homes
- Untidy sealant flagged on a snagging list
In and around Broxhill, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- Who does the work, and how experienced they are
- How hidden problems are handled
- Whether the sealant suits the joint
- How long to leave it before use
New homes and floors in Broxhill
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For jobs in and around Broxhill, choosing the right material for each joint is as important as a tidy finish.
Broxhill is in Hampshire. Homes, rented property, offices and hotels in Broxhill is covered for new build mastic, old or new, large or small. The work is guaranteed for a year. Across Hampshire, we cover 683 places, and Broxhill is one of them. You can also see our page for Southampton, roughly 21 miles from Broxhill.
Here we cover the SP6 and BH21 postcode area for new build mastic. Neighbouring places we cover for new build mastic include Alderholt (2 miles east), Damerham (2 miles north), Sandleheath (2 miles north-east), Ashford (3 miles east) and Rockbourne (4 miles north). Further out, we also cover New Milton (14 miles south-east), Ringwood (6 miles south-east), Barton on Sea (15 miles south-east), Ashley (14 miles south-east), Fordingbridge (3 miles east) and St Leonards (6 miles south).
Local landmarks in Broxhill
A little further out are Cranborne Castle Hill (2.1 miles west) and Fordingbridge Museum (3.6 miles east). Not far away are Blashford Lakes.
Should I try it myself first?
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. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Common questions in Broxhill
Is new build mastic in Broxhill guaranteed?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Do you cover smaller places like Broxhill?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Where are you based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
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.
Are you fully insured?
Yes, we are fully insured for domestic and commercial work.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we’re using and why.
Landlord and commercial work in Broxhill
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
If you manage several properties in or around Broxhill, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Towns and villages near Broxhill
Other services in Broxhill
What we can’t put right
We’ll always be straight with you, so here’s what sealant can’t fix:
- Leaks from pipes, valves or wastes, which need a plumber
- Cracking that points to a structural problem
- Deciding who is responsible under a builder’s warranty
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Where we work in Broxhill
- Plot handovers
- Bathrooms & en suites
- Kitchens
- Show homes
- Skirting & floors
- Windows & doors
How the visit works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for most snagging lists, longer for a run of plots. For a village or hamlet like Broxhill, 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 start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Before we arrive
- On commercial sites, let us know about site rules
- Tell us about any water getting in
- Clear items away from the joints we are working on
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Advice
Surface by surface
Plot handovers
Good preparation at handover saves snagging later. We clean out building dust before sealing and primer used where needed.
Kitchens
Worktops in new homes can move slightly as the house dries, opening gaps behind the upstand. A fresh flexible bead closes them.
What affects the cost of new build mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- The old material and how stubborn it is
- Any mould that needs treating
- Any working-time requirements on site
- The size of the job
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Helping us quote
What to tell us when you ask for a quote:
- Any access issues, like height or stairs
- The type of property
- The address or postcode of the job
- Photos by email, if that’s easy
For new build mastic in Broxhill, 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 we start.