Oxfordshire · England
External & façade joints in Crowmarsh Gifford, Oxfordshire
Movement joints in Crowmarsh Gifford need attention? We remove the old material, prepare the joints and seal them properly.
- Water getting into walls through failed joints
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
External mastic in Crowmarsh Gifford, done properly
Low-level joints can usually be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. If you have damp patches traced to an open external joint and joints where the bead has come unstuck, we can put it right, whatever the surface.
In a village or hamlet like Crowmarsh Gifford, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Your job is guaranteed for a year, as with all our work.
- Location
- Crowmarsh Gifford (OX10)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
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.
Walls and rooflines in Crowmarsh Gifford
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Brightwell Manor (about 2.7 miles west) are a reminder that the area around Crowmarsh Gifford 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.
For landlords with property near Cholsey station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Church of St Mary Magdalene, an extension built onto an older house moves differently, and the joint between them takes the strain.
Crowmarsh Gifford is about 6 miles east of Didcot, in Oxfordshire. We carry out external mastic for householders, landlords and businesses in Crowmarsh Gifford and the surrounding area, as part of our work across Oxfordshire. Crowmarsh Gifford is one of 443 towns and villages in Oxfordshire we cover for external mastic. There’s also a page for Reading, about 12 miles away.
We work across the OX10 postcode area for external mastic and the streets around it. External mastic is available to properties on The Street, Little Hitchen and McCulloch Meadows. Neighbouring places we cover for external mastic include Newnham Murren (1 mile south-west), Mongewell (1 mile south-west), Winterbrook (2 miles south-west), North Stoke (2 miles south) and Cholsey (3 miles south-west). Further out, we also cover Oxford (12 miles north-west), Didcot (6 miles west), Abingdon-on-Thames (9 miles north-west), Thame (12 miles north-east), Wantage (14 miles west) and Henley-on-Thames (10 miles south-east).
Landmarks near Crowmarsh Gifford
We work in homes and buildings around Howbery Park, Wallingford School and The Bell Inn. For rail, the closest station is Cholsey station, about 2.9 miles south-west of the centre. A little further out are Wallingford Castle (0.6 miles north-west). For a walk, there’s Wittenham Clumps and Ewelme Watercress Beds.
Landlord and commercial work in Crowmarsh Gifford
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
How the job changes by surface
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and helps it last.
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. We prime where the sealant needs it.
What we can’t put right
We won’t take on work that won’t last, so these are the limits:
- Cracked brickwork or render that needs a builder or plasterer
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
- Copings & trims
- Render & cladding joints
Places near Crowmarsh Gifford
What else we do in Crowmarsh Gifford
What we do, step by step
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work begins. The work usually takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Crowmarsh Gifford, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
- Mention any tricky access
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Advice
Questions from Crowmarsh Gifford
I let a flat near Cholsey station. Can you help?
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 will give you a fixed price before any work starts.
Will you come out to Crowmarsh Gifford?
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 hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
What does external mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Can you reach joints on upper floors?
It depends on the building. Send us photos and a rough idea of the height and we will confirm how they can be reached safely.
Should I point up the gap in my brickwork?
No. Rigid materials cannot move with the wall. If it has already been filled, we can usually cut it out and reseal it.
How long does the job take?
A typical job takes a few hours to a few days, depending on the length of joint and the access, including preparation and clearing up. Your quote will say how long we expect yours to take.
Do you need external mastic in Crowmarsh Gifford?
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint can’t move, so the wall cracks somewhere else instead.
Any of these means the joints need attention:
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
- Brick movement joints where the sealant has split
- Failed sealant between panels on a façade
Schools such as Crowmarsh Gifford Church of England School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- How the surfaces are prepared before sealing
- What happens if the job turns out different
- Is the old sealant removed completely?
- Who turns up on the day
Why act early in Crowmarsh Gifford
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way, and access only has to be arranged once. Older cottages and farmhouses around Crowmarsh Gifford can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
Why Crowmarsh Gifford customers choose us
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
- Sealant colour chosen to suit
- Over 20 years’ experience