Hampshire · England
Sway New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes in Sway, with a 12-month guarantee on every job. Ask us for a quote.
- Sealant applied over dusty or wet surfaces
- Untidy sealant flagged on a snagging list
- Leaking shower tray seals in a new home
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
How we handle new build mastic in Sway
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. We work on show homes, bathrooms & en suites and kitchens, and the jobs we see most are cracked caulk along new skirting and frame joints opening as the plaster dries.
If you’ve bought a new home in or near Sway, the first year or two is a good time to check the sealant. Gaps at skirtings, shower seals pulling away and missing mastic around frames are common snags.
Whatever the size of the job, you get the same 12-month guarantee in Sway and across Hampshire.
- Where
- Sway (SO41)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
So the new joints stay in good condition:
- Watch for new gaps as the house dries out
- Use the extractor fan every time you shower
- Avoid scourers and strong chemicals on sealant
- Do not seal over failed sealant yourself
Avoid standing on the rim of the bath or the edge of the tray in the first few weeks. If a bath or tray moves when you stand in it, get it looked at.
Do not let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you, so raise it early.
Quotes for new build mastic in Sway
The price is agreed before any work begins. It takes into account:
- The old material and how stubborn it is
- The amount of work
- Which sealant suits the joint
- How many rooms, windows or areas are involved
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Whether it has been sealed before
- The type of property
- The address or postcode of the job
- Roughly how big the job is
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.
Common problems we fix in Sway
A new house holds a lot of water from the build, and it dries out over the first couple of years. As it does, timber shrinks and joints open.
Most people get in touch when they notice something like this:
- Frame joints opening as the plaster dries
- Cracked caulk along new skirting
- Plot mastic for developers ahead of handover
- Sealant applied over dusty or wet surfaces
If you’ve bought a new home near Sway station, the sealant around baths, showers and frames is worth checking in the first year or two.
What your quote should include
- Are they insured?
- The length of the guarantee
- What product goes in the joint
- What happens if the job turns out different
Common questions in Sway
Is Sway within the area you cover?
Yes. Sway is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Sway station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
Should I go to my builder first?
Your builder, if you are still in their snagging or warranty period. If that doesn’t work out, we are happy to quote with our one-year guarantee.
Why has my new-build shower seal failed already?
A new house dries and settles for a year or two, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Can you match the sealant colour to my new kitchen or bathroom?
Most bathroom joints are white or clear, but other colours are available. We choose one to suit the room and agree it with you.
How it works
When we arrive, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before work begins. Most jobs take anything from a few hours to several days, depending on the number of plots. In a smaller place like Sway, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- Each joint is checked for movement before we start.
- We remove the failed sealant and clean the joints.
- 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.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
- Clear the area around the work
Ask for a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Related advice
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Why act early in Sway
The builder is usually the first port of call while the snagging or warranty period runs. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. In an older home around Sway, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Why Sway clients choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- Domestic, commercial and hotel work
- Approved under the ARBOMaster scheme
- We leave the area clean and tidy
Read what affects the cost and our reviews.
New homes and floors in Sway
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.
In and around Sway, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Sway is about 3 miles north-west of Lymington, in Hampshire. We carry out new build mastic for homes and businesses in Sway and nearby. Across Hampshire, we cover 683 places, Sway among them. Southampton is on our list too, about 13 miles from Sway.
We cover every part of SO41 for new build mastic and the streets around it. Whether your property is on Station Road, Anderwood Drive and Cruse Close or a nearby road, we can help. If you are just outside Sway, we cover Mead End (1 mile west), Tiptoe (1 mile south-west), Hordle (2 miles south), Ashley (2 miles south-west) and Bashley (2 miles west). Within a short drive, we also cover Totton (10 miles north-east), Lymington (3 miles south-east), Romsey (15 miles north), Hythe (10 miles north-east), New Milton (3 miles south-west) and Ringwood (9 miles north-west).
Landmarks near Sway
Typical jobs here are in homes near Forest Heath Hotel. Sway has its own railway station: Sway station. Other landmarks nearby include Lymington New Forest Hospital (2.9 miles south-east) and Sammy Miller Motorcycle Museum (3.3 miles south-west). The countryside around Sway includes Milford on Sea LNR.