Hampshire · England
New-build mastic & snagging in South Weirs, Hampshire
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in South Weirs and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant that never bonded to the surface
- Joints pulling apart as timber shrinks
- Worktop and upstand sealant coming away
New build mastic in South Weirs
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover. Typical jobs include plot mastic for developers ahead of handover and worktop and upstand sealant coming away, across windows & doors, skirting & floors and bathrooms & en suites.
For a small place like South Weirs, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
Your job is guaranteed for a year, as with all our work.
- Location
- South Weirs (SO42)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Kitchens
Beside the sink, the joint takes water every day. We use a sealant suited to kitchens suited to the job.
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.
FAQs for South Weirs
Do you work for landlords with property near Brockenhurst station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Do you cover South Weirs for new build mastic?
Yes, South Weirs is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Is the work guaranteed?
Yes. Every job comes with our 12-month guarantee.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in.
What does new build mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
New build mastic in South Weirs: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Around South Weirs, as everywhere, new build mastic is only as good as the preparation behind it.
South Weirs is about 4 miles north-west of Lymington, in Hampshire. Our applicators cover new build mastic for householders, landlords and businesses in South Weirs and the surrounding area. South Weirs is one of 683 towns and villages in Hampshire where we work. You can also see our page for Southampton, roughly 11 miles from South Weirs.
All of SO42 is covered for new build mastic. Neighbouring places we cover for new build mastic include Brockenhurst (1 mile north-east), Setley (1 mile east), Balmerlawn (2 miles north-east), Emery Down (4 miles north) and Lyndhurst (4 miles north). Larger places within reach include Eastleigh (15 miles north-east), Totton (8 miles north-east), Chandler's Ford (15 miles north-east), Hedge End (15 miles north-east), Lymington (4 miles south-east) and Romsey (13 miles north).
Near you in South Weirs
The closest station to South Weirs is Brockenhurst station, roughly 0.9 miles east. Nearby you will also find Lymington New Forest Hospital (3.7 miles south-east).
What happens on the day
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before we start. Most jobs take a few hours for most snagging lists, longer for a run of plots. In a small place like South Weirs, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We go through the snagging list or plot schedule and agree the joints to do.
- The old bead comes out in full, with no layer left behind.
- We clean off dust from the build and prime the surfaces where the product needs it.
- New sealant suited to each joint is applied and tooled neatly.
- We check every joint and tell you how long each needs to cure.
Before we arrive
- Move anything stored near the joints
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
Ask for a quote
For new build mastic in South Weirs, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
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When to call us in South Weirs
Sealant applied onto damp surfaces doesn’t bond well. Site programmes do not always leave time for joints to dry before the sealant goes on.
Signs it’s time to call us include:
- Untidy sealant flagged on a snagging list
- Plot mastic for developers ahead of handover
- Joints pulling apart as timber shrinks
- Gaps behind new kitchen upstands
If you’ve bought a new home near Brockenhurst station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- How the joint is cleaned and prepared
- What guarantee comes with the work
- What happens if they find a problem under the old sealant
- What insurance they hold
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
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.
What affects the quote in South Weirs
For a quick quote, just ask. What matters most is:
- Access and height
- How many areas need sealing
- The number and length of the joints
- Mould in or behind the old joints
What you pay reflects the work, not guesswork. That is why we ask a few questions first and send you a clear quote before we start.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or email us with the details.
Work for landlords, hotels and businesses
Landlords and agents in South Weirs can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Also near South Weirs
Other services in South Weirs
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Keep water off fresh sealant until it has cured
- Don’t wait for the house to settle if water is getting through
- Look at the sealant regularly in the first couple of years
- Record problems with dated pictures
Keep pictures of the joints and any snagging correspondence with your builder. It’s useful if you need to raise other issues later.
Report failed sealant to the builder while you are in the snagging period. After that, putting it right may fall to you so report it promptly.