Oxfordshire · England
Sand mastic for sash & case windows in New Hinksey, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for New Hinksey, backed by a 12-month guarantee. Ask us for a quote.
- Cracked mastic round a front door frame
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
Sand mastic for homes and businesses in New Hinksey
We work across New Hinksey renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you have tired mastic found when preparing windows for paint and wind and rain getting in round a sash window, we can help.
Many houses in smaller places like New Hinksey have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows.
All our work is covered by a 12-month guarantee.
- Place
- New Hinksey (OX1, OX4)
- Wider area
- Oxfordshire
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Sashes that rattle, stick or will not open
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Where we work in New Hinksey
- Tenement windows
- Period & listed homes
- Brick reveals
- Timber door frames
- Sash and case windows
- Stone surrounds
New Hinksey homes and the weather
Historic houses like Holywell Manor (about 1.4 miles north) are a reminder that the area around New Hinksey has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
Rented homes near Oxford station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like New Hinksey Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
New Hinksey is about 1 mile south-west of Oxford, in Oxfordshire. Every kind of property in New Hinksey can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 443 places across Oxfordshire.
Jobs for sand mastic in OX1 and OX4 works the same way as everywhere else we cover. Streets in the area include Manor Road, Edith Road and Weirs Lane, and we cover them all. Neighbouring places we cover for sand mastic include South Hinksey (1 mile south-west), Redbridge (1 mile south), Grandpont (1 mile north-west), Donnington (1 mile east) and Hinksey Hill (1 mile south-west). Within a short drive, we also cover Didcot (9 miles south), Bicester (12 miles north), Abingdon-on-Thames (4 miles south), Witney (11 miles west), Carterton (15 miles west) and Thame (12 miles east).
Around New Hinksey
Typical jobs here are in homes near South Park, Oxford Media & Business School and The Duke of Monmouth pub and the streets around them. Nearby too are Greyfriars Catholic School (1.2 miles east) and Alexander Library of Ornithology (1 mile north). New Hinksey’s nearest station is Oxford station, roughly 1.3 miles north-west of the centre. Nearby you will also find The Story Museum (1 mile north) and Oxford Castle and earlier settlement remains (1.1 miles north). For a walk, there’s Hook Meadow and The Trap Grounds and Harcourt Hill.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints and we leave things clean and tidy. A visit to New Hinksey is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Let us know about earlier repairs to the joints
Get a quote
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Read more
Quotes for sand mastic in New Hinksey
Every job gets its own quote. This is what makes a difference:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- Any working-time requirements on site
- The number of rooms or windows
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
- How many joints, rooms or windows are involved
- How we’d reach the joints
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Homes in smaller places like New Hinksey can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why choose Mr Mastic in New Hinksey
- More than 20 years in sealant work
- We’re fully insured
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
Take a look at what affects the cost or customer reviews.
What we are called out for in New Hinksey
Timber frames move with the seasons. That movement opens up the mastic joint over time.
Look out for any of the following:
- Tired mastic found when preparing windows for paint
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
- Draughty sash windows at the surround
If you live in an older home near Church of St John the Evangelist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before you book anyone
- Are they insured?
- What happens if they find a problem under the old sealant
- The length of the guarantee
- What the cure time is
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Also near New Hinksey
Other services in New Hinksey
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Keep modern sealant off the mastic
- Get any rot dealt with first
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
New Hinksey questions
Will you come out to New Hinksey?
Yes. New Hinksey is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for landlords with property near Oxford station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll advise.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.