Hampshire · England
New Build Mastic in Sherborne St John
Problem with your new-build sealant joints in Sherborne St John? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Cracks appearing as a new home settles
- Cracked caulk along new skirting
- Smeared, uneven beads picked up at snagging
New build mastic in Sherborne St John
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. If you are dealing with kitchen sealant that has pulled off the wall and sealant that never bonded to the surface, we can put it right, on windows & doors, bathrooms & en suites and plot handovers alike.
Around Sherborne St John, older homes often have timber floors that move through the year, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
Whatever the size of the job, it’s backed by our 12-month guarantee in Sherborne St John and across Hampshire.
- Place
- Sherborne St John (RG24)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Act quickly if a seal starts to leak
- Wait for the cure time before using a resealed shower
- Use the extractor fan every time you shower
- Photograph failed sealant before it’s redone
Watch the joints as the house settles. Hairline gaps can open as timber and plaster dry, and they’re simple to reseal once movement has slowed.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.
What sealant work can’t fix
New sealant cannot fix everything, and we will tell you before we start. Sealant won’t put right:
- Your warranty claim itself, which is between you and the builder
- A tray or bath that isn’t properly supported, until it’s fixed
- Cracked trays, tiles or worktops
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Windows & doors
- Plot handovers
- Show homes
- Bathrooms & en suites
- Skirting & floors
- Kitchens
Landlord and commercial work in Sherborne St John
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Why it’s worth doing now in Sherborne St John
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot, and they’re avoidable with good preparation. In a small place like Sherborne St John, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why us?
- Sealant colour chosen to suit
- 180+ five-star Google reviews
- Any old sealant cut out fully, not covered over
- You choose the colour before work begins
See how sealant jobs are priced and our reviews.
Also near Sherborne St John
Also in Sherborne St John
How the visit works
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. Most jobs take a few hours for most snagging lists, longer for a run of plots. In a small place like Sherborne St John, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- We clean off dust from the build and prime the surfaces where the product needs it.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you are given the cure time.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Related advice
New build mastic in Sherborne St John: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Basingstoke station, it’s worth checking the sealant early, while snags are still fresh. In and around Sherborne St John, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Sherborne St John is about 2 miles north of Basingstoke, in Hampshire. Homes, rented property, offices and hotels in Sherborne St John can book us for new build mastic. The work is guaranteed for a year. Our area takes in 683 places across Hampshire, from the larger towns to small villages. Reading is on our list too, about 12 miles from Sherborne St John.
Work in RG24 is quoted and booked the same way as anywhere else. That includes homes and businesses on Cranes Road, Bourne Field and Church Path. Nearby, we also carry out new build mastic in Rooksdown (1 mile south-west), Winklebury (2 miles south), Basingstoke (2 miles south), Worting (3 miles south-west) and South Ham (3 miles south). We also work in nearby towns such as Farnborough (15 miles east), Fleet (12 miles east), Aldershot (15 miles east), Alton (12 miles south-east), Yateley (12 miles east) and Tadley (4 miles north).
Near you in Sherborne St John
Typical jobs here are in homes near Everest Community Academy and the streets around them. For rail, the closest station is Basingstoke station, about 2.1 miles south-east of the centre. Nearby you will also find Basing House (3.1 miles south-east) and Basingstoke and North Hampshire Hospital (1.1 miles south). The countryside around Sherborne St John includes Daneshill Park Woods.
Your questions about new build mastic in Sherborne St John
Is Sherborne St John in your area for new build mastic?
Yes. Our work covers London and the South East, and Sherborne St John is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
Can you help a landlord with a rental near Basingstoke station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Can you do several jobs on one visit?
Yes. Just list everything you need and we will quote it together.
How long should I leave it?
Cure times vary by product and the conditions. Before we leave, we’ll tell you the cure time.
Will there be a smell?
Some sealants have a smell while they cure. Ventilation helps.
Is the work guaranteed?
Yes. All our work carries a one-year guarantee.
Is it normal for sealant to crack in a new home?
Lots of new homes see sealant crack early, because the house is drying and settling. Rushed application on dusty surfaces makes it worse.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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. All the old material has to come out first.
Surface by surface
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.
Skirting and floors
Gaps under skirting are one of the most common new-build snags. A flexible sealant closes it without cracking like caulk.