Oxfordshire · England
External Mastic in South Hinksey
Professional external mastic in and around South Hinksey, with old sealant always removed completely and a 12-month guarantee.
- Joints with sealant missing in places
- Panel joints letting water in
- Plants rooting in failed movement joints
External mastic for homes and businesses in South Hinksey
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the joint does not stand out. If you have rain getting behind render or cladding at a joint and brick movement joints where the sealant has split, we can help.
In a village or hamlet like South Hinksey, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- South Hinksey (OX1)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
Aftercare is simple:
- Keep high-pressure jets off the joints
- Fix overflowing gutters above sealed joints
- Point out the joints to other trades
- Never let anyone fill a movement joint with mortar
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
Outside joints around South Hinksey
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Holywell Manor (about 1.8 miles north) nearby, there’s older building stock in the area around South Hinksey as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For site and facilities teams at buildings such as New Hinksey Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing. In the older streets around Church of St Lawrence, an extension built onto an older house moves differently, and the joint between them takes the strain.
South Hinksey is about 2 miles south-west of Oxford, in Oxfordshire. For external mastic in and around South Hinksey, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Oxfordshire. South Hinksey is one of 443 towns and villages in Oxfordshire where we work for external mastic.
Here we cover the OX1 postcode area for external mastic. You’ll find streets such as Barleycott Lane, St Lawrence Road and Church Close, and we cover them all. We also cover the places around South Hinksey: Hinksey Hill (1 mile south), New Hinksey (1 mile north-east), Redbridge (1 mile east), Grandpont (1 mile north) and Chilswell (1 mile south-west). Within a short drive, we also cover Didcot (8 miles south), Bicester (13 miles north), Abingdon-on-Thames (4 miles south), Witney (10 miles west), Carterton (14 miles west) and Thame (13 miles east).
What’s near South Hinksey
Typical jobs here are in homes near Alexander Library of Ornithology, Greyfriars Catholic School and Oxford Media & Business School. You’ll also find Raleigh Park (1.3 miles north-west) and The General Elliot pub (less than half a mile north). The nearest railway station is Oxford station, about 1.5 miles north of the centre. Well-known places in the area include Oxford Castle and earlier settlement remains (1.4 miles north) and The Story Museum (1.3 miles north). Open spaces near South Hinksey include Lashford Lane Fen and Harcourt Hill.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Signs you need external mastic in South Hinksey
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
It’s worth asking for a quote if you see:
- Weathered mastic that no longer stretches
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
- Panel joints letting water in
Rented homes near Oxford station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before you book anyone
- How much experience the applicator has
- What the cure time is
- Which colour the sealant will be
- Is the old sealant removed completely?
Common questions in South Hinksey
I let a flat near Oxford station. Can you help?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Will you come out to South Hinksey?
Yes, we do. 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 have insurance?
Yes, we’re fully insured for every job we do.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Is it messy?
We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.
Why it’s worth doing now in South Hinksey
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. Older cottages and farmhouses around South Hinksey can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- Fully insured
- White, clear, grey or another colour, product permitting
- Approved under the ARBOMaster scheme
- 20+ years of sealant experience
Take a look at our cost guide and what customers say.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in South Hinksey and across Oxfordshire. Several sites can be quoted together.
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.
What happens on the day
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as South Hinksey, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- For business premises, tell us about site rules or sign-in
How to get 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 add pictures by email if you can.
Read more
Also near South Hinksey
Also in South Hinksey
How we quote for external mastic
We quote each job individually. These are the things that affect it:
- Mould in or behind the old joints
- Which sealant suits the joint
- Access and height
- How much there is to do
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
Helping us quote
When you contact us, these details help:
- Any access issues, like height or stairs
- The address or postcode of the job
- If someone has resealed it before
- The problem you’ve noticed
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.