Hampshire · England
New-build mastic & snagging in Gundleton, Hampshire
Professional new build mastic in and around Gundleton, with old sealant always removed completely and a one-year guarantee.
- Worktop and upstand sealant coming away
- Shower seals failing in the first year or two
- Beads laid onto grit and dust from the build
About our new build mastic in Gundleton
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. In both, preparation makes the difference. We’re often asked to deal with second-fix sealing on new plots and joints pulling apart as timber shrinks, across windows & doors, kitchens and skirting & floors.
Somewhere as small as Gundleton, 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.
You get a one-year guarantee, the same in Gundleton as everywhere else we work.
- Where
- Gundleton (SO24)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. We reseal once the old bead is fully out.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk in a colour to suit.
New build mastic around Gundleton
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.
Around Gundleton, as everywhere, new build mastic is only as good as the preparation behind it.
Gundleton is about 7 miles south-west of Alton, in Hampshire. Homes, rented property, offices and hotels in Gundleton can book us for new build mastic. The work is guaranteed for a year. Our Hampshire coverage runs to 683 places, Gundleton among them. You can also see our page for Southampton, about 17 miles away.
We cover every part of the SO24 postcode area for new build mastic and the streets around it. If you need new build mastic at a property on Goscombs Lane and Bighton Lane or anywhere close by, we can help. Neighbouring places we cover for new build mastic include Bishop's Sutton (1 mile south-west), New Alresford (2 miles west), Bramdean (3 miles south), Hinton Ampner (4 miles south) and Cheriton (4 miles south-west). Further out, we also cover Basingstoke (12 miles north), Winchester (9 miles west), Eastleigh (13 miles south-west), Horndean (14 miles south), Chandler's Ford (14 miles south-west) and Alton (7 miles north-east).
Landmarks near Gundleton
Around Gundleton, our work takes us to homes and buildings near Three Horseshoes Public House. Other landmarks nearby include Barton Castle (2.9 miles north). The countryside around Gundleton includes Shutts Copse and Red Hill.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Gundleton, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely down to clean surfaces.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- Move anything stored near the joints
Ask for a quote
We quote each job on its own. Just ring 0345 464 0079 or drop us an email with the details.
Related advice
When it is not the sealant
It helps to know what we can’t do:
- Broken tiles or a split tray
- Leaking fittings rather than failed sealant
- Movement caused by a poorly fitted tray or bath
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before you book.
Joints and surfaces we work on
- Plot handovers
- Kitchens
- Show homes
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
Can I do it myself?
If you do try it yourself, take your time over the 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 thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Also near Gundleton
Also in Gundleton
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Common questions in Gundleton
Is Gundleton in your area for new build mastic?
Yes. We work across London and the South East, and Gundleton is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Is there a guarantee on new build mastic in Gundleton?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
What does new build mastic cost?
Size, access and the old material all affect the cost. Ask us for a 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.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Will you just run a new bead over the existing one?
No. The old sealant is cut out fully, then clean and prime the joint, and a new bead applied.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
How long does new build mastic take?
Most jobs take a few hours for most snagging lists, longer for a run of plots, including the preparation. Your quote will say how long we expect yours to take.
When to call us in Gundleton
A new house holds a lot of water from the build, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart, and sealant that cannot keep up splits.
Common reasons people contact us include:
- Sealant work across a run of new homes
- Kitchen sealant that has pulled off the wall
- Frame joints opening as the plaster dries
- Gaps between new skirting and floors
For jobs in and around Gundleton, choosing the right material for each joint is as important as a tidy finish.
Questions to ask before you book
- How the joint is cleaned and prepared
- Which sealant they’ll use, and why
- How the colour is chosen
- Is VAT in the price?
How we quote for new build mastic
Every job gets its own quote. This is what makes a difference:
- How many areas need sealing
- Access and height
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
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
- Whether it has been sealed before
- The rough size of the job
For new build mastic in Gundleton, call 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 we start.