Isle of Wight · England
Gunville New Build Mastic
New build mastic across Gunville and nearby, with old sealant always removed completely and a 12-month guarantee.
- Sealant work across a run of new homes
- Joints pulling apart as timber shrinks
- Untidy sealant flagged on a snagging list
What we are called out for in Gunville
Later trades and the final clean can damage fresh sealant. A bead disturbed before it has cured may never seal properly, and the problem shows up after you move in.
Most people get in touch when they notice something like this:
- Kitchen sealant that has pulled off the wall
- Joints pulling apart as timber shrinks
- Leaking shower tray seals in a new home
- Gaps between new skirting and floors
Around Gunville, as everywhere, new build mastic is only as good as the preparation behind it.
Before booking anyone
- Who turns up on the day
- Whether they seal over old material or remove it
- Is VAT in the price?
- How long the guarantee is
New build mastic in Gunville
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 have gaps opening as the house dries out and settles and new-build shower sealant that has already split, we can put it right, whatever the surface.
In a village or hamlet like Gunville, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
There’s a 12-month guarantee on every job, large or small.
- Where
- Gunville (PO30)
- Wider area
- Isle of Wight
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
A little care helps the new joints last. We recommend:
- Report sealant problems to your builder during the snagging period
- Open a window or run the fan after bathing
- Keep water off fresh sealant until it has cured
- Keep photos and emails about snagging items
Avoid standing on the rim of the bath or the edge of the tray. If a bath or tray moves when you stand in it, get it looked at.
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.
Your questions about new build mastic in Gunville
Is Gunville within the area you cover?
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.
Is there a guarantee on new build mastic in Gunville?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
How long does the job take?
Typically it takes anything from a few hours to several days, depending on the number of plots. Bigger jobs take longer, and we will say how long yours will take.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
Can new sealant go on top of the old bead?
No. New silicone will not bond to old silicone, so sealing over the top fails quickly. The old sealant always comes out first.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can I send you my snagging list?
Yes. We often work straight from a snagging list. We agree the sealant items with you before we start.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
How the job changes by surface
Kitchens
As a new house dries, worktops and walls shift a little, opening gaps behind the upstand. A fresh flexible bead closes them.
Show homes
Tired or marked sealant in a show home can be renewed. The old bead comes out and a clean new one goes in.
New homes and floors in Gunville
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.
Whether the job is in Gunville itself or nearby, the right material for each joint matters as much as a neat finish.
Gunville is about 1 mile west of Newport, in the Isle of Wight. Anywhere in PO30, our applicators can take on new build mastic. Our the Isle of Wight coverage runs to 125 places, and Gunville is one of them. We also work in Portsmouth, around 13 miles away.
We cover every part of the PO30 postcode area for new build mastic and the streets around it. That includes homes and businesses on Ash Lane, Purdy Road and Gunville Road and the roads around them. Neighbouring places we cover for new build mastic include Carisbrooke (1 mile south), Clatterford (1 mile south), Plaish (1 mile south), Bowcombe (1 mile south-west) and Gatcombe (2 miles south). Within a short drive, we also cover Ryde (7 miles east), Cowes (4 miles north), Sandown (8 miles south-east), Shanklin (8 miles south-east), Ventnor (9 miles south-east) and East Cowes (4 miles north-east). For island and remote addresses, a little more planning is needed, so let us know when you get in touch.
Local landmarks in Gunville
Typical jobs here are in homes near Seaclose Park, Carisbrooke Church of England Controlled Primary School and The Waverley pub and the streets around them. Well-known places in the area include St Mary's Hospital (1.2 miles north-east) and Carisbrooke Castle (0.8 miles south-east). Green spaces nearby include Briddlesford Nature Reserve and Mill Hill.
Nearby places to Gunville
What else we do in Gunville
Quotes for new build mastic in Gunville
Every job gets its own quote. This is what makes a difference:
- When we can work, for business premises
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
Combining jobs into one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. We will send you a clear quote for the lot.
What we need to know
To help us quote quickly, please include:
- Any previous sealing or DIY work
- Photos by email, if that’s easy
- How we’d reach the joints
- The problem you’ve noticed
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
Why deal with it now?
A tube of sealant from the DIY shop will not fix the cause: grit, unprimed surfaces and old layers underneath. Proper removal and preparation are what make it last. Older cottages and farmhouses around Gunville can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Gunville
- We leave the area clean and tidy
- Colour picked to suit the job
- ARBOMaster approved applicator
- We never seal over old sealant
Read our cost guide or what customers say.
Landlords, agents and businesses in Gunville
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours in a single home. Somewhere like Gunville needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We go through the snagging list or plot schedule and agree the joints to do.
- Failed or untidy sealant is cut out completely.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
How to prepare
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we are working on
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or drop us an email and describe the job.