Oxfordshire · England
Marsh Gibbon External Mastic
We cover Marsh Gibbon for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Joints where the bead has come unstuck
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
Marsh Gibbon questions
I let a flat near Bicester North station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Do you cover smaller places like Marsh Gibbon?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Where are you based?
We work from Crawley. We cover Marsh Gibbon and the rest of Oxfordshire, along with the rest of our area.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Are you fully insured?
Yes. Full insurance covers our work.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few photos.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected.
External mastic in Marsh Gibbon
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. Typical jobs include failed seals between different materials and joints with sealant missing in places, across brickwork movement joints, joints between brick and frames and copings & trims.
Around Marsh Gibbon, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Marsh Gibbon (OX27)
- Region
- Oxfordshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Marsh Gibbon
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, and it tears off the sides.
Common reasons people contact us include:
- Hard, crazed mastic that has stopped moving
- Damp patches traced to an open external joint
- Panel joints letting water in
- Joints where the bead has come unstuck
For site and facilities teams at buildings such as Marsh Gibbon CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- What happens if the job turns out different
- The length of the guarantee
- What the cure time is
- How the joint is cleaned and prepared
Outside joints around Marsh Gibbon
Historic houses like Claydon House (about 4.8 miles east) are a reminder that the area around Marsh Gibbon 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Bicester North station, outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to Church of St Mary include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Marsh Gibbon is about 4 miles east of Bicester, in Oxfordshire. If you need external mastic in Marsh Gibbon, it’s easy to get a quote: please ring 0345 464 0079 or email us. We cover Oxfordshire from our Crawley base. 443 places in Oxfordshire are on our list, large and small. For nearby work, see our Oxford page, about 13 miles away.
Work in OX27 is quoted and booked the same way as anywhere else. Whether your property is on Moorhen Close, Westbury Close and Moat Lane or a nearby road, our applicators can take on the job. Nearby, we also carry out external mastic in Poundon (2 miles north), Charndon (2 miles north-east), Twyford (2 miles north-east), Calvert (3 miles east) and Preston Bissett (4 miles north). We also work in nearby towns such as Oxford (13 miles south-west), Bicester (4 miles west), Thame (11 miles south), Kidlington (11 miles south-west), Chinnor (15 miles south-east) and Headington Quarry (11 miles south-west).
Landmarks near Marsh Gibbon
Locally, jobs take us to homes and businesses close to Plough Inn. Marsh Gibbon’s nearest station is Bicester North station, roughly 3.7 miles west. Well-known places in the area include Bicester Community Hospital (4 miles west) and Bicester Village (4 miles west). For a walk, there’s Upper Ray Meadows and Graven Hill.
What else we do in Marsh Gibbon
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for.
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Act on the first splits you see
- Show decorators and builders where the movement joints are
- Keep high-pressure jets off the joints
- Check the sealant is paintable before painting near it
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted and spoil the finish.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Surface by surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joints work hard every day. We choose the product to suit.
What affects the quote in Marsh Gibbon
Your quote is based on your job. We take into account:
- How many rooms, windows or areas are involved
- Working hours on commercial sites
- The number and length of the joints
- Which sealant suits the joint
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and send you a clear quote before we start.
What to tell us for a quote
When you contact us, it’s useful to know:
- Where the property is
- The rough size of the job
- Whether it’s a home or a business
- The problem you’ve noticed
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
How it works
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours for a handful of joints, longer for a whole elevation in most cases. For a village or hamlet like Marsh Gibbon, 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.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
How to prepare
- Clear items away from the joints we’re working on
- Mention any parking rules near the property
- Mention any tricky access
How to get a quote
We quote each job on its own. Just ring 0345 464 0079 or drop us an email with the details and send photos if you have them.