Oxfordshire · England
External & façade joints in Iffley, Oxfordshire
Our applicators work in Iffley on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
About our external mastic in Iffley
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. If you have joints where the bead has come unstuck and damp patches traced to an open external joint, we can help, whatever the surface.
Outbuildings, garages and conservatories around homes in places like Iffley add more joints to look after. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Iffley (OX4)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work can’t fix
To be straight with you, there are a few things sealant will not fix:
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
- Damp that is not coming from the joint
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
- Façade panels
- Brickwork movement joints
- Copings & trims
Towns and villages near Iffley
What else we do in Iffley
Why deal with it now?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. In a smaller place like Iffley, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Why book with us
- Tidy, careful work
- ARBOMaster approved applicator
- Arbo and Everbuild products
- Homes, businesses and hotels
Take a look at how sealant jobs are priced and what customers say.
What the job involves on each surface
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible year round.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Keep soil, plants and ivy away from the joints
- Leave the joints unpainted unless we’ve said otherwise
- Act on the first splits you see
- Fix overflowing gutters above sealed joints
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
FAQs for Iffley
Is Iffley within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Iffley for external mastic?
Yes, Iffley is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
When will the joints need doing again?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our 12-month guarantee.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
Is it OK to fill a movement joint with cement?
No. Cement or mortar cannot stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
What we do, step by step
Once we’re on site, 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 building. Parking around Iffley is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Move anything stored near the joints
- Tell us about any water getting in
- Tell us if parking is tricky
How to get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Related advice
Outside joints around Iffley
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Holywell Manor (about 2 miles north-west) are a reminder that the area around Iffley has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Rose Hill Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Oxford station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Church of St James, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Iffley is about 1 mile south of Oxford, in Oxfordshire. For external mastic in and around Iffley, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We are based in Crawley and cover Oxfordshire. Iffley is one of 443 places in Oxfordshire where we work.
We cover every part of OX4 for external mastic. Whether your property is on Tree Lane, Banjo Road and Jersey Road or a nearby road, we can help. We also cover the places around Iffley: Cowley (1 mile east), Donnington (1 mile north-west), Littlemore (1 mile south), Blackbird Leys (1 mile south-east) and Redbridge (1 mile west). Larger places within reach include Didcot (8 miles south), Bicester (12 miles north), Abingdon-on-Thames (4 miles south-west), Witney (12 miles west), Thame (11 miles east) and Wantage (13 miles south-west).
Landmarks near Iffley
Typical jobs here are in homes near Alexander Library of Ornithology, Emmanuel Christian School and South Park, among other places. Other local landmarks include Greyfriars Catholic School (0.5 miles north) and The Jolly Postboys pub (under half a mile north-east). Iffley’s nearest station is Oxford station, roughly 2.4 miles north-west of the centre. A little further out are British Tattoo History Museum (0.7 miles north) and Oxford Castle and earlier settlement remains (2.1 miles north-west). The countryside around Iffley includes Headington Hill and CS Lewis Nature Reserve.
For landlords and businesses
Landlords and agents in Iffley can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.