Oxfordshire · England
Fencott New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Fencott and across Oxfordshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant work across a run of new homes
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
New build mastic in Fencott, done properly
Across Fencott, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method doesn’t change: cut out, clean, prime where needed and reseal neatly. If you have cracked caulk along new skirting and sealant work across a run of new homes, we can put it right, on plot handovers, bathrooms & en suites and kitchens alike.
Older homes in small places like Fencott often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
There’s a 12-month guarantee on every job, large or small.
- Location
- Fencott (OX5)
- Region
- Oxfordshire
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of new build mastic
You will get a clear quote before work begins. It takes into account:
- The size of the job
- The type of sealant required
- Any mould that needs treating
- How easy the joints are to reach
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
What we need to know
Before you ask for a quote, have a think about:
- Roughly how big the job is
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
For new build mastic in Fencott, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
What new build mastic looks like in Fencott
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around Fencott, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Fencott is about 4 miles south of Bicester, in Oxfordshire. Every kind of property in Fencott can book us for new build mastic. Every job comes with our one-year guarantee. Fencott is one of 443 places in Oxfordshire where we work. Oxford is on our list too, about 7 miles from Fencott.
Our applicators cover all of the OX5 postcode area for new build mastic. Nearby, we also carry out new build mastic in Murcott (1 mile south-east), Charlton-on-Otmoor (1 mile west), Merton (1 mile north), Upper Arncott (2 miles east) and Wendlebury (2 miles north-west). Within a short drive, we also cover Oxford (7 miles south-west), Bicester (4 miles north), Abingdon-on-Thames (12 miles south-west), Witney (14 miles west), Thame (11 miles south-east) and Kidlington (5 miles west).
Local landmarks in Fencott
We work in homes and buildings around The Crown pub, among other places. The closest station to Fencott is Islip station, about 3.2 miles west. Well-known places in the area include Bicester Avenue (3.2 miles north) and Bicester Community Hospital (3.8 miles north). Not far away are Otmoor RSPB reserve and Graven Hill.
How the visit works
The work is kept neat and contained to the joints we are treating. The job generally takes anything from a few hours to several days, depending on the number of plots, and we tell you how long to leave it before we go. In a small place like Fencott, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- 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.
- We check every joint and leave you with the cure times.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
Ask for a quote
Every job is quoted individually. Just call 0345 464 0079 or drop us an email with the details.
Related advice
Nearby places to Fencott
Other services in Fencott
When to call us in Fencott
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes do not always leave time for joints to dry before the sealant goes on.
Signs it’s time to call us include:
- Sealant work across a run of new homes
- New-build shower sealant that has already split
- Skirting joints opening in the first winter
- Joints pulling apart as timber shrinks
For new homes near Islip station, it’s worth checking the sealant early, while snags are still fresh.
Questions to ask before you book
- Are they insured?
- Which colour the sealant will be
- Whether they seal over old material or remove it
- Whether VAT is included
How the job changes by surface
Kitchens
As a new house dries, worktops and walls shift a little, opening gaps behind the upstand. We reseal them with a flexible sealant.
Windows and doors
External mastic around new windows and doors is sometimes rushed or missed. It’s resealed with an exterior sealant suited to the frame and wall.
Looking after it afterwards
So the new joints stay in good condition:
- Ventilate bathrooms well, especially in the first year
- Watch for new gaps as the house dries out
- Resist patching a failed seal with a tube from the DIY shop
- Keep photos and emails about snagging items
Clean the sealant with a mild detergent and a soft cloth. Avoid abrasive pads and strong solvents, which can damage the surface.
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.
Why it’s worth doing now in Fencott
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot. Around Fencott, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why choose Mr Mastic in Fencott
- ARBOMaster approved applicator
- We are fully insured
- 20+ years of sealant experience
- Experience in homes, commercial sites and hotels
Read our cost guide and what customers say.
Questions from Fencott
Is Fencott in your area for new build mastic?
Yes. We work across London and the South East, and Fencott is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Will you come out to Fencott?
Yes. Fencott 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.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the number of plots, including preparation and clearing up. We’ll confirm how long when we quote.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you.
Can you quote for more than one area?
Yes. Just list everything you need and you will get one quote.
Should I wait before resealing?
If the seal has failed and water is getting in, do it now. Hairline cosmetic gaps can wait until the house has settled.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Landlord and commercial work in Fencott
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.