Hampshire · England
New Build Mastic in Winnall
New build mastic across Winnall and nearby, with old sealant always removed completely and a 12-month guarantee.
- Untidy sealant flagged on a snagging list
- Kitchen sealant that has pulled off the wall
- Gaps between new skirting and floors
Quotes for new build mastic in Winnall
We quote each job individually. These are the things that affect it:
- How many areas need sealing
- Whether the work is at height
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
- If someone has resealed it before
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or drop us an email.
New build mastic in Winnall, done properly
Developers send us the plot schedule and we work through it. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover using the right product for each joint. We work on kitchens, windows & doors and plot handovers, and the jobs we see most are joints pulling apart as timber shrinks and gaps between new skirting and floors.
In and around Winnall, floors range from older timber boards to tiles and newer finishes, each moving in its own way. The sealant at skirtings and thresholds has to suit the floor it meets.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Winnall (SO23, SO21, SO20)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Winnall
Also in Winnall
New build mastic around Winnall
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Winchester station, it’s worth checking the sealant early, while snags are still fresh.
Winnall is about 1 mile north-east of Winchester, in Hampshire. We carry out new build mastic for homes and businesses in Winnall, as part of our work across Hampshire. Our area takes in 683 places across Hampshire, from the larger towns to small villages. You can also see our page for Southampton, about 11 miles away.
Here we cover the SO23, SO21 and SO20 postcode area for new build mastic. That includes homes and businesses on Moss Road, Water Lane and Imber Road. You’ll find Winnall on the M3, so it’s easy for us to get to with everything needed for new build mastic. If you’re just outside Winnall, we cover Kings Worthy (2 miles north), Easton (2 miles north-east), Abbots Worthy (2 miles north), Temple Valley (2 miles east) and Morestead (3 miles south-east). Within a short drive, we also cover Eastleigh (7 miles south), Fareham (15 miles south), Andover (13 miles north-west), Totton (14 miles south-west), Chandler's Ford (7 miles south-west) and Alton (15 miles north-east).
Around Winnall
We work in homes and buildings around Leigh House Hospital, The Golden Lion pub and St. Cross Park and the streets around them. Winnall’s nearest station is Winchester station, roughly 1 mile west of the centre. Nearby you’ll also find Winchester City Museum (0.8 miles west) and Wolvesey Castle (0.7 miles south-west). The countryside around Winnall includes Winnall Moors and Twyford Down.
The process
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes anything from a few hours to several days, depending on the number of plots in most cases. For a job in Winnall, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
How to prepare
- Clear the area around the work
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
How to 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 photos by email if you can.
Read more
What we are called out for in Winnall
Once people move in, baths and trays take weight and bed down. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used and the sealant may split.
People generally contact us after spotting something like this:
- Worktop and upstand sealant coming away
- Joints pulling apart as timber shrinks
- Cracked caulk along new skirting
- Smeared, uneven beads picked up at snagging
Around Winnall, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- What guarantee comes with the work
- How the surfaces are prepared before sealing
- Who turns up on the day
- Whether all the old sealant comes out first
Honest limits
It helps to know what we can’t do too:
- Cracking that points to a structural problem
- Leaks from pipes, valves or wastes, which need a plumber
- Broken tiles or a split tray
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Skirting & floors
- Show homes
- Windows & doors
- Bathrooms & en suites
- Plot handovers
- Kitchens
Questions from Winnall
Do you cover smaller places like Winnall?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Winnall for new build mastic?
Yes, Winnall is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing.
Why has my new-build shower seal failed already?
There are normally two causes: movement as the house dries and settles, and sealant laid onto dust without primer. Cutting it out and resealing properly fixes both.
Can you work from my snagging list?
Yes. We often work straight from a snagging list. We will go through the sealant items and agree what we will do.
Do you work for developers?
Yes. We work through plots to your schedule, room by room. Tell us the plots and the joints involved for a clear quote.
Can you match the sealant colour to my new kitchen or bathroom?
That depends on what the joint meets: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We will agree it with you first.
Where is Mr Mastic based?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Different surfaces, different methods
Windows and doors
Draughts around new frames are often a sealant gap. We look at the joints and reseal where needed.
Skirting and floors
As timber and screed dry, skirting and floors shift. Caulk cracks; a flexible sealant moves with it in a colour to suit.
Why it’s worth doing now in Winnall
A tube of sealant from the DIY shop won’t fix the cause: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. Around Winnall, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost reflects the work involved, not guesswork. That is why we ask about the job first and send you a clear quote before work begins.
Why choose Mr Mastic in Winnall
- Quality sealants from Arbo and Everbuild
- Sanitary silicone with an anti-fungal additive in wet areas
- White, clear, grey or another colour, product permitting
- Every job guaranteed for a year
See how sealant jobs are priced and our reviews.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid running a DIY bead over the old one
- Get a leaking seal dealt with right away
- Put sealant faults on your snagging list early
- Keep water off fresh sealant until it has cured
Avoid standing on the rim of the bath or the edge of the tray. Report any movement in a bath or tray.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in keeps the job straightforward.