Oxfordshire · England
Farmoor New Build Mastic
Professional new build mastic in and around Farmoor, with old sealant always removed completely and a one-year guarantee.
- Kitchen sealant that has pulled off the wall
- Beads laid onto grit and dust from the build
- Shower seals failing in the first year or two
New build mastic in Farmoor
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover with a sealant suited to each area. If you are dealing with shower seals failing in the first year or two and beads laid onto grit and dust from the build, we can put it right, whatever the surface.
Somewhere as small as Farmoor, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.
All our work is covered by our one-year guarantee.

- Where
- Farmoor (OX2)
- Region
- Oxfordshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How it works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It normally takes anything from a few hours to several days, depending on the number of plots. Somewhere like Farmoor needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Keep children and pets away from the work area
Getting 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’s easy.
Advice
Places near Farmoor
More services for Farmoor
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Watch for new gaps as the house dries out
- Don’t wait for the house to settle if water is getting through
- Avoid scourers and strong chemicals on sealant
- Ventilate bathrooms well, especially in the first year
Follow the cure time we give you before the area gets wet. Silicone is normally left for about a day before water reaches them.
Report failed sealant to the builder while you are in the snagging period. Once it ends, the repair may be down to you so report it promptly.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- A tray or bath that isn’t properly supported, until it’s fixed
- Your warranty claim itself, which is between you and the builder
- Plumbing faults behind the sealant
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Where we work in Farmoor
- Kitchens
- Bathrooms & en suites
- Show homes
- Skirting & floors
- Plot handovers
- Windows & doors
How the job changes by surface
Show homes
In a show home, the sealant is on display. We lay neat, even beads in colours to suit the finishes.
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Why act early in Farmoor
A tube of sealant from the DIY shop will not fix the cause: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. Older cottages and farmhouses around Farmoor can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and send you a clear quote before any work starts.
Why choose Mr Mastic in Farmoor
- Sanitary silicone with an anti-fungal additive in wet areas
- Colour picked to suit the job
- Full insurance on every job
- Neat joints and a tidy finish
Joints and finishes in Farmoor homes
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.
If you’ve bought a new home near Oxford station, the sealant around baths, showers and frames is worth checking in the first year or two.
Farmoor is about 5 miles west of Oxford, in Oxfordshire. For new build mastic in and around Farmoor, please ring 0345 464 0079 or drop us an email for a quick quote. We cover Oxfordshire from our Crawley base. Across Oxfordshire, we cover 443 places, Farmoor among them.
Postcode districts we cover here for new build mastic: OX2. If you need new build mastic at a property on Mayfield Road, Oxford Road and Meadow Close or anywhere close by, our applicators can take on the job. Other places close to Farmoor include Filchampstead (1 mile south), Swinford (1 mile north-west), Dean Court (2 miles south-east), Eynsham (2 miles north-west) and Wytham (2 miles north-east). Larger places within reach include Oxford (5 miles east), Didcot (11 miles south-east), Bicester (13 miles north-east), Abingdon-on-Thames (6 miles south-east), Witney (6 miles west) and Carterton (10 miles west).
Landmarks near Farmoor
Farmoor’s nearest station is Oxford station, about 3.4 miles east. Well-known places in the area include Oxford University Press Museum (3.6 miles east) and Radcliffe Infirmary (3.7 miles east). The countryside around Farmoor includes Hook Meadow and The Trap Grounds and Cumnor Hill.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Do you need new build mastic in Farmoor?
Not every new-build joint gets the right sealant: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Neither lasts long.
The most common problems we see are:
- Internal frame sealant that has split
- Kitchen sealant that has pulled off the wall
- New-build shower sealant that has already split
- Cracked caulk along new skirting
In and around Farmoor, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- Whether they’re fully insured
- The length of the guarantee
- What happens if the job turns out different
- Whether the sealant suits the joint
Your questions about new build mastic in Farmoor
Is Farmoor within the area you cover?
Yes, Farmoor is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you do new build mastic in Farmoor?
Yes. We work across London and the South East, and Farmoor is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Is there a guarantee?
Yes, always. Each job is guaranteed for twelve months, large or small.
Why has my new-build shower seal failed already?
Lots of new homes see sealant crack early. Poor preparation at handover adds to it.
Should I wait before resealing?
If the seal has failed and water is getting in, do it now. Small gaps that are just cosmetic can be resealed once movement has slowed.
Where do you work from?
We work from Crawley. Our applicators cover Farmoor.
Can I add another job to the visit?
Of course. Doing several areas at once is generally more efficient.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
