Oxfordshire · England
External & façade joints in Little Wittenham, Oxfordshire
Movement joints in Little Wittenham need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Joints where the bead has come unstuck
- Panel joints letting water in
- Water getting into walls through failed joints
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Fix overflowing gutters above sealed joints
- Leave the joints unpainted unless we’ve said otherwise
- Keep high-pressure jets off the joints
- Keep movement joints as flexible joints, not mortar
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
External mastic in Little Wittenham
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We are often asked to deal with gaps where render, brick and frames meet and weathered mastic that no longer stretches, across render & cladding joints, brickwork movement joints and joints between brick and frames.
Older homes in small places like Little Wittenham may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- Little Wittenham (OX14)
- Wider area
- Oxfordshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Little Wittenham
More services for Little Wittenham
How the visit works
At the end, we look at the finished work together and explain the cure time. The visit itself usually takes anything from a few hours to several days, depending on the building, depending on the size of the job. In a small place like Little Wittenham, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and give you a clear price.
Advice
What we are called out for in Little Wittenham
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
Look out for any of the following:
- Movement joints filled with mortar instead of sealant
- Panel joints letting water in
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
If you look after a building such as Long Wittenham (Church of England) Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Comparing quotes
- How the joint is cleaned and prepared
- How long to leave it before use
- Are they insured?
- Is the old sealant removed completely?
FAQs for Little Wittenham
Is Little Wittenham 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 work for landlords with property near Appleford station?
Yes. We work for landlords and letting agents as well as householders. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
How do I get a quote for external mastic in Little Wittenham?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
When will the joints need doing again?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Our work comes with a 12-month guarantee.
Do you use backing rod?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or email us.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
When it isn’t the sealant
It helps to know what we can’t do:
- Cracks in the bricks or render themselves, away from the joints
- Movement that’s more than a sealant joint can take
- Failed render or damaged cladding panels
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Joints between brick and frames
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
How we quote for external mastic
There’s no set price list. The quote depends on:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- Whether the work is at height
- The amount of work
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- The rough size of the job
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or drop us an email.
Should I try it myself first?
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.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Why it’s worth doing now in Little Wittenham
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Where a wall is exposed, as many are in small places like Little Wittenham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit generally makes better use of the time than several visits. You will get one clear quote for the whole job.
What you get with us
- ARBOMaster approved applicator
- We agree the colour with you first
- White, clear, grey or another colour, product permitting
- Colour picked to suit the job
What external mastic looks like in Little Wittenham
Rainfall in the South East is lower than in much 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 Brightwell Manor (about 1.7 miles south-east) nearby, there’s older building stock in the area around Little Wittenham as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Appleford station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you live in an older home near Church of St Peter, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Little Wittenham is about 3 miles north-east of Didcot, in Oxfordshire. We provide external mastic to homeowners, landlords and businesses in Little Wittenham and nearby, as part of our work across Oxfordshire. Our Oxfordshire coverage runs to 443 places, and Little Wittenham is one of them. Our Oxford page covers work nearby (8 miles or so).
Here we cover the OX14 postcode area for external mastic. Other places close to Little Wittenham include Dorchester (1 mile north-east), Brightwell-cum-Sotwell (2 miles south-east), Burcot (2 miles north), Shillingford (2 miles east) and Berinsfield (2 miles north). Within a short drive, we also cover Oxford (8 miles north), Didcot (3 miles south-west), Abingdon-on-Thames (5 miles north-west), Thame (12 miles north-east), Wantage (11 miles west) and Henley-on-Thames (14 miles south-east).
Around Little Wittenham
The nearest railway station is Appleford station, about 2.4 miles west of the centre. Well-known places in the area include Abingdon Community Hospital (5.5 miles north-west) and Brightwell Castle (1.7 miles south-east). Open spaces near Little Wittenham include Mowbray Fields and Wittenham Clumps.