Oxfordshire · England
East Hanney External Mastic
Professional external mastic in and around East Hanney, with old sealant always removed completely and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
- Plants rooting in failed movement joints
Why deal with it now?
A failed movement joint lets water into the wall and can run behind render or cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like East Hanney, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why us?
- We leave the area clean and tidy
- More than 20 years in sealant work
- We are fully insured
- Colour agreed with you before any work starts
External mastic for homes and businesses in East Hanney
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. We work on brickwork movement joints, concrete & block and joints between brick and frames, and common reasons people get in touch are movement joints filled with mortar instead of sealant and joints with sealant missing in places.
Around East Hanney, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Big or small, it’s backed by our one-year guarantee.
- Where
- East Hanney (OX12)
- Region
- Oxfordshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Common problems we fix in East Hanney
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
The problems people generally mention when they call include:
- Hard, crazed mastic that has stopped moving
- Leaking joints around cladding and façade panels
- Plants rooting in failed movement joints
- Joints pointed up with cement by mistake
Managing a site like St James Church of England Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- Whether VAT is included
- What the cure time is
- Whether you can choose the colour
- The length of the guarantee
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What else we do in East Hanney
What we do, step by step
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on the building. For a village or hamlet like East Hanney, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
Read more
Landlords, agents and businesses in East Hanney
Landlords and agents in East Hanney 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.
Walls and rooflines in East Hanney
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Longworth House (about 4.5 miles north-west) are a reminder that the area around East Hanney has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Church of St James, older walls, gutters and the joints where extensions meet them need a flexible sealant.
East Hanney is about 3 miles north of Wantage, in Oxfordshire. Every kind of property in East Hanney can book us for external mastic. The work is guaranteed for a year. Our Oxfordshire coverage runs to 443 places, East Hanney among them. We also work in Oxford, around 11 miles away.
Here we cover the OX12 postcode area for external mastic. Whether your property is on Main Street, The Green and Morlands or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Frilford (3 miles north-east), Steventon (3 miles east), Marcham (3 miles north-east), Fyfield (4 miles north) and Frilford Heath (4 miles north-east). Further out, we also cover Oxford (11 miles north-east), Didcot (7 miles east), Abingdon-on-Thames (6 miles north-east), Witney (11 miles north), Carterton (12 miles north-west) and Wantage (3 miles south).
Near you in East Hanney
We work in homes and buildings around The Black Horse pub and the streets around them. Well-known places in the area include Hinton Waldrist Castle (4.6 miles north-west) and Williams F1 Grand Prix Collection (1.3 miles south-west). Open spaces near East Hanney include Chain Hill and Hitchcopse Pit.
Common questions in East Hanney
Do you cover smaller places like East Hanney?
Yes, East Hanney is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is external mastic in East Hanney guaranteed?
All our work, in East Hanney and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Do you work at height?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
How long does external mastic last?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
Do you work for landlords and businesses?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels in East Hanney.
Why do you put foam in the joint first?
That is backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Avoid pressure-washing directly into sealant joints
- Keep water from gutters off the wall
- Clear growth from the base of walls and joints
- Look over the joints every year, ideally after winter
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
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, all bigger jobs than a reseal.