Oxfordshire · England
External & façade joints in Littlemore, Oxfordshire
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Littlemore and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Joints pointed up with cement by mistake
- Joints where the bead has come unstuck
- Joints with sealant missing in places
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
External mastic in Littlemore, done properly
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. If you are dealing with moss and dirt in joints with no sealant left and leaking joints around cladding and façade panels, we can put it right.
Homes around Littlemore range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
All our work comes with a one-year guarantee.
- Place
- Littlemore (OX4, OX3)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid pressure-washing directly into sealant joints
- Ask before painting over external sealant
- Look over the joints every year, ideally after winter
- Deal with leaking gutters that soak the joints below
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint and spoil the finish.
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.
How the job changes by surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so the movement is taken up.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Leave it or put it right?
Sealing over the top of old mastic doesn’t hold for long. The new layer cannot bond properly to old, weathered material, so we always take the old sealant out. Homes in smaller places like Littlemore can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why choose Mr Mastic in Littlemore
- We’re fully insured
- White, clear, grey or coloured to suit, where the product allows
- ARBOMaster approved applicator
- A sealant colour to suit the surroundings
Read our cost guide and our reviews.
Do you need external mastic in Littlemore?
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Keep an eye out for any of the following:
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
For site and facilities teams at buildings such as Emmanuel Christian School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What to look for in a quote
- Is the old sealant removed completely?
- What the cure time is
- Whether they’re fully insured
- How the surfaces are prepared before sealing
How we quote for external mastic
We do not publish a price list, because jobs vary so much. The quote depends on:
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- The size of the job
- How many areas need sealing
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- A few pictures by email, if you can
- Any access issues, like height or stairs
- The address or postcode of the job
Want a quote for external mastic? Please call 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Nearby places to Littlemore
Also in Littlemore
External mastic in Littlemore: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Holywell Manor (about 2.7 miles north) nearby, there’s older building stock in the area around Littlemore 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 Radley station? Then split movement joints are easy to miss on a rental until damp shows inside. If you live in an older home near Church of St Mary and St Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Littlemore is about 2 miles south of Oxford, in Oxfordshire. Our applicators cover external mastic for householders, landlords and businesses in Littlemore and the surrounding area. Littlemore is one of 443 towns and villages in Oxfordshire we cover for external mastic.
Jobs for external mastic in OX4 and OX3 is quoted and booked the same way as anywhere else. Whether your property is on Giles Road, Astrop Lane and Grange Road or a nearby road, our applicators can take on the job. Littlemore is on the A4074, so it’s easy for us to get to with everything needed for external mastic. We also cover the places around Littlemore: Sandford-on-Thames (1 mile south), Blackbird Leys (1 mile east), Iffley (1 mile north), Kennington (1 mile south-west) and Cowley (1 mile north-east). Further out, we also cover Didcot (8 miles south), Bicester (13 miles north), Abingdon-on-Thames (4 miles south-west), Witney (12 miles west), Thame (11 miles east) and Wantage (12 miles south-west).
Local landmarks in Littlemore
We work in homes and buildings around John Henry Newman Academy, The Catherine Wheel pub and The Oxford Academy. For rail, the closest station is Radley station, roughly 2.4 miles south. Other landmarks nearby include Oxford Castle and earlier settlement remains (2.7 miles north-west) and Littlemore Hospital (less than half a mile south). For a walk, there’s Headington Hill and CS Lewis Nature Reserve.
How it works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the building, and the area is left clean. Parking around Littlemore is usually 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.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Let us know about parking restrictions
- Mention any tricky access
- Let us know about earlier repairs to the joints
Getting a quote
If you’re in Littlemore and need external mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Read more
Littlemore questions
Do you cover Littlemore for external mastic?
Yes, Littlemore is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Will you come out to Littlemore?
Yes, Littlemore is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
How do you reach high-level joints?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher work, tell us about the building and we’ll confirm what’s needed.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we’re using.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Littlemore, along with the rest of our area.