Oxfordshire · England
New-build mastic & snagging in Charndon, Oxfordshire
We cover Charndon for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Sealant that never bonded to the surface
- Internal frame sealant that has split
- Sealant work across a run of new homes
Surface by surface
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.
Plot handovers
Send us the schedule and any sealant specification for a quote. We seal bathrooms, kitchens, frames and floors.
New build mastic in Charndon
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. In both, preparation makes the difference, because that is what rushed new-build sealant generally lacks. If you have sealant work across a run of new homes and joints pulling apart as timber shrinks, we can help, on bathrooms & en suites, skirting & floors and kitchens alike.
Work in a small place like Charndon just needs the journey and access planning, and once on site, the job is the same as anywhere.
You get a one-year guarantee, the same in Charndon as everywhere else we work.
- Location
- Charndon (OX27)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When it isn’t the sealant
To be straight with you, there are a few things sealant will not fix:
- Damaged fittings that need replacing
- Movement caused by a poorly fitted tray or bath
- Plumbing faults behind the sealant
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before you book.
What we seal
- Windows & doors
- Show homes
- Skirting & floors
- Plot handovers
- Kitchens
- Bathrooms & en suites
Aftercare tips
Looking after new joints is easy:
- Put sealant faults on your snagging list early
- Ventilate bathrooms well, especially in the first year
- Keep water off fresh sealant until it has cured
- Avoid scourers and strong chemicals on sealant
Follow the cure time we give you before the area gets wet. Silicone is normally left for about a day to cure enough for use.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black keeps the job straightforward.
New build mastic in Charndon: local notes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Charndon, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. For jobs in and around Charndon, choosing the right material for each joint is as important as a tidy finish.
Charndon is about 6 miles east of Bicester, in Oxfordshire. If you need new build mastic in Charndon, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Oxfordshire from our Crawley base. Across Oxfordshire, we cover 443 places, Charndon among them. We also work in Oxford, around 14 miles away.
Jobs for new build mastic in OX27 is quoted and booked the same way as anywhere else. Whether your property is on Main Street, Spencer Gardens and Wootton Green or anywhere close by, our applicators can take on the job. We also cover Calvert (1 mile east), Twyford (1 mile north), Poundon (2 miles north-west), Marsh Gibbon (2 miles south-west) and Hillesden (3 miles north). Larger places within reach include Oxford (14 miles south-west), Bicester (6 miles west), Thame (12 miles south), Kidlington (13 miles south-west), Headington Quarry (13 miles south-west) and Bure Park (6 miles west).
Around Charndon
Other landmarks nearby include Bicester Community Hospital (5.9 miles west). The countryside around Charndon includes Calvert Jubilee.
Quotes for new build mastic in Charndon
We do not publish a price list, because jobs vary so much. The quote depends on:
- Working hours on commercial sites
- Any mould that needs treating
- The old material and how stubborn it is
- The amount of work
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Asking for a quote
When you call or email, it’s useful to know:
- Access, such as stairs, a lift or height
- The type of property
- Where the property is
- If someone has resealed it before
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or drop us an email.
Nearby places to Charndon
What else we do in Charndon
FAQs for Charndon
Do you cover Charndon for new build mastic?
Yes, Charndon is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Will you come out to Charndon?
Yes, Charndon is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How long should I leave it?
It depends on the product. Before we leave, we will tell you the cure time.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Is the work guaranteed?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we’ll put it right.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
How it works
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to several days, depending on the number of plots. Somewhere like Charndon 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.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- 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.
Getting ready for the visit
- Keep children and pets away from the work area
- Clear items away from the joints we are working on
- Let us know if you’ve seen damp or leaks
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved and give you a clear quote.
Read more
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Why it’s worth doing now in Charndon
Sealant done properly at handover means fewer callbacks. Snagging visits for failed sealant cost time on every plot. Where a wall is exposed, as many are in small places like Charndon, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Over 20 years’ experience
- Rated 4.9 stars on Google
- Colour agreed with you before we start
See what affects the cost and what customers say.