Oxfordshire · England
New Build Mastic in Kingston Lisle
Specialist new build mastic for Kingston Lisle: careful preparation, the right product and tidy work. Call for a quick quote.
- Joints pulling apart as timber shrinks
- Leaking shower tray seals in a new home
- Internal frame sealant that has split
New build mastic in Kingston Lisle
Snagging sealant properly means taking the failed bead out completely. New silicone will not bond to old silicone, so it all comes out before we clean, dry and reseal. We work on bathrooms & en suites, show homes and plot handovers, and the jobs we see most are gaps opening as the house dries out and settles and sealant applied over dusty or wet surfaces.
For a small place like Kingston Lisle, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
Big or small, it’s backed by our 12-month guarantee in Kingston Lisle and across Oxfordshire.
- Location
- Kingston Lisle (OX12)
- Region
- Oxfordshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What happens on the day
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on the number of plots, including the tidy-up. Somewhere like Kingston Lisle needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Before we arrive
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Act quickly if a seal starts to leak
- Use the extractor fan every time you shower
- Follow the cure time we give you
- Do not seal over failed sealant yourself
Ventilation matters in a new home, which is still drying out. Run the fan or open a window after bathing to help keep mould away.
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.
Places near Kingston Lisle
What else we do in Kingston Lisle
What sealant work cannot fix
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Leaking fittings rather than failed sealant
- A tray or bath that is not properly supported, until it’s fixed
- Cracked trays, tiles or worktops
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
What we seal
- Kitchens
- Plot handovers
- Windows & doors
- Show homes
- Bathrooms & en suites
- Skirting & floors
Do you need new build mastic in Kingston Lisle?
When the heating goes on in the first winter, the house dries fast. Skirting, frames and worktops pull away slightly and cracked sealant shows up.
The most common problems we see are:
- Leaking shower tray seals in a new home
- Internal frame sealant that has split
- Cracks appearing as a new home settles
- Untidy sealant flagged on a snagging list
For jobs in and around Kingston Lisle, choosing the right material for each joint is as important as a tidy finish.
What to look for in a quote
- Is the old sealant removed completely?
- Are they insured?
- How long the guarantee is
- Is VAT in the price?
What new build mastic looks like in Kingston Lisle
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Around Kingston Lisle, as everywhere, new build mastic is only as good as the preparation behind it.
Kingston Lisle is about 5 miles west of Wantage, in Oxfordshire. From the centre of Kingston Lisle to the outskirts, we cover new build mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 443 places across Oxfordshire. For nearby work, see our Oxford page, about 17 miles away.
Every address in OX12 is covered for new build mastic, from the main roads to the quietest streets. You will find streets such as Hill View, Drove Way and Fawler Road, all of which we cover. Close by, we work in Westcot (1 mile east), Sparsholt (1 mile east), Woolstone (2 miles west), Upper Lambourn (5 miles south) and Sheepdrove (5 miles south). Larger places within reach include Didcot (12 miles east), Abingdon-on-Thames (12 miles north-east), Witney (14 miles north), Carterton (13 miles north), Wantage (5 miles east) and Grove (5 miles east).
Around Kingston Lisle
Well-known places in the area include Faringdon Day Hospital (5.2 miles north-west) and Uffington Museum (1.7 miles north-west). Not far away are Whitehorse Hill and Seven Barrows.
How the job changes by surface
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. Resealing properly keeps water where it belongs.
Skirting and floors
As timber and screed dry, skirting and floors shift. We use a flexible product rather than caulk in a colour to suit.
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- The amount of work
- Access and height
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
Combining jobs into one visit normally makes better use of the time than several visits. You’ll get one clear quote for the whole job.
What to tell us for a quote
Before you ask for a quote, have a think about:
- The rough size of the job
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job.
Kingston Lisle questions
Can you do new build mastic in Kingston Lisle?
Yes. Our work covers London and the South East, and Kingston Lisle is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Is there a guarantee on new build mastic in Kingston Lisle?
All our work, in Kingston Lisle and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Why does sealant fail so quickly in new builds?
Cracking in the first couple of years is common, because the house is drying and settling. Poor preparation at handover adds to it.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How long does the job take?
Most jobs take a few hours for most snagging lists, longer for a run of plots, including preparation and clearing up. We’ll confirm how long when we quote.