Southampton · England
Swaythling New Build Mastic
New build mastic across Swaythling and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Joints pulling apart as timber shrinks
- Gaps between new skirting and floors
- Sealant work across a run of new homes
New build mastic in Swaythling, done properly
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. While the builder’s snagging or warranty period runs, report it to them first, and if it isn’t put right, get in touch with us. We work on skirting & floors, show homes and windows & doors, and the jobs we see most are sealant work across a run of new homes and gaps behind new kitchen upstands.
Homes around Swaythling range from older cottages to newer houses, and their floors range just as widely, from timber that moves with the seasons to tiles laid on concrete. Skirting and threshold joints need a sealant that suits the floor.
All our work is covered by a one-year guarantee.
- Location
- Swaythling (SO16, SO18, SO17)
- Region
- Southampton
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Show homes
Show homes need sealant that looks right from day one. Every bead is neat and coloured to suit the room.
Windows and doors
On new builds, external frame sealant can be patchy. It’s resealed with an exterior sealant suited to the frame and wall.
How we quote for new build mastic
There’s no set price list, because jobs vary so much. What we look at:
- Mould in or behind the old joints
- The number and length of the joints
- The product the joint needs
- How much old sealant there is and how hard it is to remove
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 we need extra access for height. We take all of that into account in your quote.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Photos by email, if that is easy
- Any access issues, like height or stairs
- The rough size of the job
- Where the job is, and your postcode
We do not publish a price list. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours for most snagging lists, longer for a run of plots and we leave things clean and tidy. For a job in Swaythling, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- Each joint is cleaned of dust and grit, then primed if required.
- New sealant suited to each joint is applied and tooled neatly.
- Finally, each room is checked and you are given the cure time.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
Ask for a quote
We quote each job on its own. Simply phone 0345 464 0079 or send us an email and describe the job.
Advice
Questions from Swaythling
I let a flat near Swaythling station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Do you cover Swaythling for new build mastic?
Yes. Our work covers London and the South East, and Swaythling is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Do you use white or clear sealant?
We use white, clear or a colour to suit the finishes. Let us know your preference when you ask for a quote.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
My new home is still under warranty. Should I contact you?
Start with the builder if you’re in the snagging or warranty period. If it is not resolved, we will cut it out and reseal it.
Places near Swaythling
What else we do in Swaythling
New build mastic in Swaythling: local notes
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.
Around Swaythling, as everywhere, new build mastic is only as good as the preparation behind it.
Swaythling is about 2 miles north of Southampton, in Southampton. Jobs in Swaythling get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Swaythling is one of 40 towns and villages in Southampton where we work.
Postcode districts we cover here for new build mastic: SO16, SO18 and SO17. We cover properties on High Road, Wide Lane and Lilac Road. We also cover the places around Swaythling: Bassett Green (1 mile west), Mansbridge (1 mile east), North Stoneham (1 mile north), Portswood (1 mile south-west) and St Denys (1 mile south). Larger places within reach include Shirley (3 miles south-west), Regents Park (3 miles south-west), Thornhill (3 miles south-east), Itchen (3 miles south), Sholing (3 miles south) and Maybush (3 miles west).
What’s near Swaythling
In Swaythling, that means homes and buildings near Saint George Catholic Voluntary Aided College Southampton, Riverside Park and Saint George Catholic Voluntary Aided College Southampton and the streets around them. Swaythling has its own railway station: Swaythling station. A little further out are Marlands Shopping Centre (2.6 miles south-west) and Bitterne Local History Society Heritage And Research Centre (1.9 miles south). For a walk, there’s Netley Common.
Landlords, agents and businesses in Swaythling
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Do you need new build mastic in Swaythling?
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, and the sealant sits on grit instead of the surface.
Most people get in touch when they notice something like this:
- Joints pulling apart as timber shrinks
- Cracked caulk along new skirting
- Sealant that never bonded to the surface
- Second-fix sealing on new plots
If you’ve bought a new home near Swaythling station, the sealant around baths, showers and frames is worth checking in the first year or two.
Before booking anyone
- Is VAT in the price?
- Whether the sealant suits the joint
- How hidden problems are handled
- How the colour is chosen
What sealant work cannot fix
We’d rather tell you now than do work that won’t last, so these are the limits:
- Leaks from pipes, valves or wastes, which need a plumber
- Your warranty claim itself, which is between you and the builder
- Cracked trays, tiles or worktops
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Swaythling
- Windows & doors
- Plot handovers
- Skirting & floors
- Show homes
- Kitchens
- Bathrooms & en suites
Why act early in Swaythling
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it cannot bond to what’s underneath. Taking it all out and starting again is the only way to get a lasting seal. In a smaller place like Swaythling, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why us?
- Anti-fungal silicone where joints get wet
- Experience in homes, commercial sites and hotels
- Neat joints and a tidy finish
- More than 20 years in sealant work
Take a look at how sealant jobs are priced or our reviews.