Oxfordshire · England
Headington Hill New Build Mastic
Our applicators work in Headington Hill on plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
- Gaps behind new kitchen upstands
New build mastic in Headington Hill
New homes move as they dry out. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. We’re often asked to deal with shower seals failing in the first year or two and sealant work across a run of new homes, across windows & doors, show homes and bathrooms & en suites.
In and around Headington Hill, floors range from older timber boards to tiles and newer finishes, from timber that moves with the seasons to tiles laid on concrete. The sealant at skirtings and thresholds has to suit the floor it meets.
Big or small, it’s backed by our one-year guarantee.
- Place
- Headington Hill (OX3, OX4)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
New homes and floors in Headington Hill
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Headington Hill, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Headington Hill is about 1 mile north-east of Oxford, in Oxfordshire. Every kind of property in Headington Hill is covered for new build mastic. The work is guaranteed for a year. Our area takes in 443 places across Oxfordshire, from the larger towns to small villages.
We cover every part of OX3 and OX4 for new build mastic. We cover properties on Gipsy Lane, Grays Road and Beech Road and the roads around them. If you’re just outside Headington Hill, we cover Oxford (1 mile south-west), New Marston (1 mile north-west), St Clement's (1 mile south-west), Headington (1 mile north-east) and Northway (1 mile north). We also work in nearby towns such as Didcot (10 miles south), Bicester (11 miles north), Abingdon-on-Thames (6 miles south-west), Witney (12 miles west), Thame (11 miles east) and Wantage (14 miles south-west).
Near you in Headington Hill
Around Headington Hill, our work takes us to homes and buildings near Headington Hill Park, White Horse pub and English Faculty Library, among other places. Other local landmarks include Headington Rye Oxford (within half a mile north-east), Holy Trinity Church (1.2 miles east) and St Michael's CofE Primary School (0.5 miles west). The nearest railway station is Oxford station, roughly 1.9 miles west. Well-known places in the area include Clarendon Shopping Centre (1.5 miles west) and Oxford Castle (1.6 miles west). Not far away are CS Lewis Nature Reserve and Shotover.
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Disputes or warranty claims with your builder
- Movement caused by a poorly fitted tray or bath
- Broken tiles or a split tray
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Kitchens
- Bathrooms & en suites
- Skirting & floors
- Windows & doors
- Plot handovers
- Show homes
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Housing providers, facilities teams and property managers book us too in Headington Hill and across Oxfordshire. Several sites can go on one quote.
Questions from Headington Hill
Will you come out to Headington Hill?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Oxford station. Can you help?
Yes, we work for landlords and agents. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
How long before the joint can be used?
It depends on the product. We tell you how long to leave it before we go.
Do you work for developers?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send us the plot schedule and we’ll quote.
How long will you be here?
That depends on the amount of work, but as a guide it takes a few hours for most snagging lists, longer for a run of plots. We will give you a better idea when we quote.
Who should fix failed sealant in a new build?
While the snagging or warranty period runs, the builder should be your first contact. If it is not sorted, or keeps failing, get in touch with us.
Can you work from my snagging list?
Yes. Send us the sealant items on the list, with photos if you can, and we’ll quote. We will tell you if anything on it is not a sealant job.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Nearby places to Headington Hill
Other services in Headington Hill
What we do, step by step
The work is kept neat and contained to the joints we’re treating, so you can carry on as normal. Expect the work to take a few hours for most snagging lists, longer for a run of plots, and we explain the cure time before we leave. In a smaller place like Headington Hill, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out, with no layer left behind.
- 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
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Want a quote for new build mastic? Please phone 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Surface by surface
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We cut out the cracked bead and reseal with a flexible sealant that suits the frame.
Kitchens
Worktop, upstand and sink joints in new kitchens often get a hurried bead. We remove it and reseal with a kitchen-suitable sealant.
Signs you need new build mastic in Headington Hill
Sealant applied onto damp surfaces doesn’t bond well. On a busy site, joints aren’t always given time to dry before the sealant goes on.
Common reasons people contact us are:
- Second-fix sealing on new plots
- Sealant applied over dusty or wet surfaces
- Kitchen sealant that has pulled off the wall
- Skirting joints opening in the first winter
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.
Comparing quotes
- Is VAT in the price?
- How long the guarantee is
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
Can I do it myself?
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.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Raise failed sealant with the developer while you are covered
- Ventilate bathrooms well, especially in the first year
- Avoid running a DIY bead over the old one
- Act quickly if a seal starts to leak
Keep photos of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black keeps the job straightforward.