Oxfordshire · England

External & façade joints in Steeple Aston, Oxfordshire

Movement joints in Steeple Aston need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.

  • Joints with sealant missing in places
  • Cracked joints where brick meets render or frames
  • Water getting into walls through failed joints

External mastic for Steeple Aston homes and businesses

What happens on the day

Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. Somewhere like Steeple Aston needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.

  1. We inspect the joints and agree which need resealing and how they’ll be reached.
  2. Old sealant and any debris are cut and raked out.
  3. We clean both faces of the joint and prime them where the product calls for it.
  4. We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
  5. A flexible exterior sealant is applied and tooled in a colour to suit the wall.

How to prepare

  • Let us know if you’ve seen damp or leaks
  • Let us know about earlier repairs to the joints
  • Keep children and pets away from the work area

Ask for a quote

Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details and send pictures if you have them.

Get a quick quote

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External mastic in Steeple Aston

As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it. Typical jobs include joints where the bead has come unstuck and rain getting behind render or cladding at a joint, on façade panels, render & cladding joints and brickwork movement joints.

Somewhere as small as Steeple Aston, homes and farm buildings often face open ground, 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.

Whatever the size of the job, it’s backed by our 12-month guarantee in Steeple Aston and across Oxfordshire.

Eleven members of the Mr Mastic team standing in front of branded white vans
Where
Steeple Aston (OX25)
Wider area
Oxfordshire
Guarantee
12 months on all our work
Price
A clear price before work begins
Call
0345 464 0079
Last updated
26 October 2026

FAQs for Steeple Aston

Can you help a landlord with a rental near Heyford station?

Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.

Will you come out to Steeple Aston?

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.

Can you work on commercial sites?

Yes. Hotels, offices and other businesses use us.

Should I point up the gap in my brickwork?

No, not where the gap is a movement joint. Filling it with mortar defeats its purpose, and the wall may crack nearby. We’ll reseal it with a flexible sealant.

What colours does the sealant come in?

We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin, matched as closely as the range allows.

What’s an expansion joint in brickwork?

A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.

How long will you be here?

As a guide, most jobs take a few hours to a few days, depending on the length of joint and the access. Bigger jobs take longer, and we will tell you how long to expect.

Is it OK to seal over old sealant?

No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.

What happens if it’s left?

Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so we always take the old sealant out. Around Steeple Aston, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.

Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.

What you get with us

  • We leave the area clean and tidy
  • You choose the colour before work begins
  • A 12-month guarantee on all work
  • Anti-fungal silicone where joints get wet

Read how sealant jobs are priced or what customers say.

What the job involves on each surface

Brickwork movement joints

Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod in a colour to suit the brick.

Cladding and façade panels

Where a cladding system has its own specified sealant, we follow it or an approved alternative. Tell us what the building has when you get in touch.

Should I try it myself first?

Sealing over old silicone is the commonest DIY error. 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.

Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.

Work for landlords, hotels and businesses

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.

We also work for property managers and facilities teams in Steeple Aston and across Oxfordshire. We can quote a run of properties together.

Signs you need external mastic in Steeple Aston

If plants are growing out of a joint, the sealant has usually failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.

These are the problems we are asked about most:

  • Panel joints letting water in
  • Rigid filler in a joint that should flex
  • Joints with sealant missing in places
  • Hard, crazed mastic that has stopped moving

Rented homes near Heyford station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.

Before you book anyone

  • Which colour the sealant will be
  • What the quote includes, VAT included or not
  • How the joint is cleaned and prepared
  • Whether the sealant suits the joint

How to choose a mastic man

Steeple Aston buildings and the weather

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.

Homes close to Church of St Peter and St Paul include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. Managing a site like Dr Radcliffe's Church of England Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.

Steeple Aston is about 7 miles west of Bicester, in Oxfordshire. From the centre of Steeple Aston to the outskirts, external mastic is available for homes and businesses alike. Across Oxfordshire, we cover 443 places, and Steeple Aston is one of them. Oxford is on our list too, about 13 miles from Steeple Aston.

All of OX25 is within our area for external mastic. If you need external mastic at a property on Jubilee Close, Paines Hill and North Side or a nearby road, we can help. Neighbouring places we cover for external mastic include Middle Aston (1 mile north), Steeple Barton (2 miles west), Duns Tew (2 miles north-west), North Aston (2 miles north) and Dane Hill (2 miles north). Further out, we also cover Oxford (13 miles south), Banbury (9 miles north), Bicester (7 miles east), Witney (12 miles south-west), Kidlington (8 miles south) and Headington Quarry (13 miles south).

Near you in Steeple Aston

Locally, jobs take us to homes and businesses close to White Lion pub and the streets around them. The nearest railway station is Heyford station, about 0.9 miles south-east of the centre. A little further out are Deddington Castle (3.6 miles north).

Map of Steeple Aston © OpenStreetMap contributors

Quotes for external mastic in Steeple Aston

You’ll get a clear quote before work begins. It’s based on:

  • Any mould that needs treating
  • Access and height
  • Working hours on commercial sites
  • The size of the job

The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and give you a clear price before any work starts.

What to tell us for a quote

A few details help us give you an accurate quote. When you get in contact, it helps to mention:

  • Pictures of the joints, sent by email
  • If it’s domestic, commercial or a hotel
  • Where the job is, and your postcode
  • What the problem is, such as mould, gaps, leaks or cracking

We do not publish a price list, because every job is different. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or drop us an email.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job