Oxfordshire · England
Shellingford New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Shellingford and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Shower seals failing in the first year or two
- Cracks appearing as a new home settles
- Frame joints opening as the plaster dries
New build mastic in Shellingford, done properly
Snagging sealant properly means taking the failed bead out completely. New silicone won’t bond to old silicone, so the joint is cut out, cleaned, dried and resealed. We’re often asked to deal with untidy sealant flagged on a snagging list and worktop and upstand sealant coming away, across show homes, kitchens and bathrooms & en suites.
In a village or hamlet like Shellingford, 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.
We stand behind the work with a 12-month guarantee, so you’re covered after we’ve gone.
- Location
- Shellingford (SN7)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Shellingford
Is new build mastic in Shellingford guaranteed?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Will you come out to Shellingford?
Yes, Shellingford is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work through snagging lists?
Yes. Send it with photos and we’ll quote for the sealant items. Items that need a plumber, tiler or the builder are flagged.
When is the best time to reseal in a new build?
Any seal that’s leaking should be redone right away. For small cosmetic gaps, waiting until the house has settled can save doing them twice.
Can you do plot mastic on a new development?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send the schedule and any specification and we’ll give you a quote.
Do you work for landlords and businesses?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Shellingford.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Why act early in Shellingford
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot, and they’re avoidable with good preparation. Older cottages and farmhouses around Shellingford can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why Shellingford customers choose us
- Colour picked to suit the job
- Over 20 years’ experience
- You choose the colour before work begins
- White, clear, grey or another colour, product permitting
Take a look at our cost guide and what customers say.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Clean sealant with mild detergent, not abrasives
- Report sealant problems to your builder during the snagging period
- Open a window or run the fan after bathing
- Photograph failed sealant before it’s redone
Follow the cure time we give you before the area gets wet. Silicone is generally left for about a day before water reaches them.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in keeps the job straightforward.
Other services in Shellingford
Landlords, agents and businesses in Shellingford
If you manage several properties in or around Shellingford, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
New build mastic in Shellingford: local notes
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For jobs in and around Shellingford, choosing the right material for each joint is as important as a tidy finish.
Shellingford is about 6 miles north-west of Wantage, in Oxfordshire. Wherever you are in the SN7 postcode area, our applicators can take on new build mastic. 443 places in Oxfordshire are on our list, large and small. For nearby work, see our Oxford page.
Work in SN7 works the same way as everywhere else we cover. Local streets include Church Street and Fernham Road, and we cover them all. Nearby, we also carry out new build mastic in Stanford in the Vale (1 mile east), Hatford (2 miles north-east), Baulking (2 miles south), Bow (2 miles east) and Fernham (2 miles south-west). Within a short drive, we also cover Oxford (15 miles north-east), Didcot (13 miles east), Abingdon-on-Thames (11 miles east), Witney (10 miles north), Carterton (9 miles north) and Wantage (6 miles south-east).
Near you in Shellingford
Around Shellingford, our work takes us to homes and buildings near Faringdon Community College. A little further out are Faringdon Castle (1.9 miles north-west) and Faringdon Museum (2.2 miles north-west). Not far away are Badbury Hill.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you’re 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 does not work out, we can still put it right.
When something else is needed
It helps to know what we can’t do:
- Leaks from pipes, valves or wastes, which need a plumber
- Disputes or warranty claims with your builder
- Structural cracks in walls or ceilings
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before you book.
What we seal
- Skirting & floors
- Bathrooms & en suites
- Kitchens
- Windows & doors
- Plot handovers
- Show homes
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for most snagging lists, longer for a run of plots, and the area is left clean. Somewhere as small as Shellingford, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we work through your snagging list or plot schedule with you.
- Failed or untidy sealant is cut out completely.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
- Let us know if you’ve seen damp or leaks
How to get a quote
If you are in Shellingford and need new build mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
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Common problems we fix in Shellingford
A new house holds a lot of water from the build, and it dries out over the first couple of years. As it does, timber shrinks and joints open, and sealant that can’t keep up splits.
It’s worth asking for a quote if you see:
- Gaps between new skirting and floors
- Gaps opening as the house dries out and settles
- Untidy sealant flagged on a snagging list
- Sealant work across a run of new homes
Around Shellingford, as everywhere, new build mastic is only as good as the preparation behind it.
Questions to ask before booking
- How long to leave it before use
- Whether they’re fully insured
- Which sealant they’ll use, and why
- What guarantee comes with the work