Oxfordshire · England
North Moreton External Mastic
External mastic across North Moreton and nearby, with old sealant always removed completely.
- Movement joints filled with mortar instead of sealant
- Movement joints with cracked, split or missing sealant
- Gaps where render, brick and frames meet
Why act early in North Moreton
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Where a wall is exposed, as many are in small places like North Moreton, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and send you a clear quote before we start.
Why us?
- Colour agreed with you before work begins
- 4.9 on Google from 180+ five-star reviews
- A choice of colours where the product allows
- Domestic, commercial and hotel work
Read what affects the cost or what customers say.
External mastic for homes and businesses in North Moreton
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall. Typical jobs include old sealant gone brittle and cracked and joints where the bead has come unstuck, across brickwork movement joints, façade panels and concrete & block.
External sealant needs dry, clean surfaces, so work around North Moreton is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
The work is covered for a year after we finish. If anything is not right with it, call 0345 464 0079 or email us.
- Place
- North Moreton (OX11)
- Wider area
- Oxfordshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
We will not take on work that will not last, so here’s what sealant can’t put right:
- Cracks in the bricks or render themselves, away from the joints
- Movement that is more than a sealant joint can take
- Render that is blown, hollow or coming away
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before you book.
Where we work in North Moreton
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Concrete & block
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for a handful of joints, longer for a whole elevation. In a small place like North Moreton, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
- Keep pets and children clear of the area while we work
How to get a quote
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
Read more
FAQs for North Moreton
Is North Moreton in your area for external mastic?
Yes, North Moreton is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
Can you help a landlord with a rental near Didcot Parkway station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How long will you be here?
A typical job takes a few hours for a handful of joints, longer for a whole elevation. We’ll confirm how long when we quote.
Will the old sealant be removed?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Where are you based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Different surfaces, different methods
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
What we’re called out for in North Moreton
Sometimes a movement joint was filled with mortar or a rigid filler. The joint cannot move, so the wall cracks somewhere else instead.
Most people get in touch when they notice something like this:
- Gaps where render, brick and frames meet
- Movement joints with cracked, split or missing sealant
- Leaking joints around cladding and façade panels
- Damp patches traced to an open external joint
Schools such as South Moreton Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What to look for in a quote
- How hidden problems are handled
- How the colour is chosen
- What guarantee comes with the work
- How the joint is cleaned and prepared
Also near North Moreton
More services for North Moreton
What external mastic looks like in North Moreton
Historic houses like Brightwell Manor (about 1.2 miles north-east) are a reminder that the area around North Moreton 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Church of All Saints, the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Didcot Parkway station? Then split movement joints are easy to miss on a rental until damp shows inside.
North Moreton is about 2 miles east of Didcot, in Oxfordshire. Jobs in North Moreton get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Oxfordshire coverage runs to 443 places, and North Moreton is one of them. Oxford is on our list too, around 10 miles away.
Every address in OX11 is within our area for external mastic, from the main roads to the quietest streets. That includes homes and businesses on High Street, Elm Road and Wallingford Road. Neighbouring places we cover for external mastic include Mackney (1 mile east), Brightwell-cum-Sotwell (2 miles north-east), Little Wittenham (2 miles north), Wallingford (3 miles east) and Shillingford (3 miles north-east). Larger places within reach include Oxford (10 miles north), Abingdon-on-Thames (6 miles north-west), Thame (14 miles north-east), Wantage (10 miles west), Henley-on-Thames (13 miles east) and Grove (10 miles west).
Near you in North Moreton
We work in homes and buildings around St Birinus School and Bear at Home pub. North Moreton’s nearest station is Didcot Parkway station, about 2.3 miles west. Well-known places in the area include Brightwell Castle (1.3 miles north-east) and Pendon Museum (2.7 miles north-west). Green spaces nearby include Mowbray Fields and Wittenham Clumps.
Work for landlords, hotels and businesses
We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.