Oxfordshire · England
Streatley External Mastic
Movement joints in Streatley need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Failed sealant between panels on a façade
- Old sealant gone brittle and cracked
About our external mastic in Streatley
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. If you are dealing with rain getting behind render or cladding at a joint and rigid filler in a joint that should flex, we can help, whatever the surface.
In a village or hamlet like Streatley, 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.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Where
- Streatley (RG8)
- Region
- Oxfordshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Streatley
Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way, and access only has to be arranged once. In a small place like Streatley, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why choose Mr Mastic in Streatley
- White, clear, grey or another colour, product permitting
- Anti-fungal silicone where joints get wet
- Any old sealant cut out fully, not covered over
- Every job guaranteed for a year
See our cost guide and what customers say.
Places near Streatley
More services for Streatley
Honest limits
A few problems are outside what sealant work can do:
- Failed render or damaged cladding panels
- Damp that is not coming from the joint
- Structural movement, which needs a surveyor or engineer
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Where we work in Streatley
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Concrete & block
- Copings & trims
- Render & cladding joints
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
What external mastic looks like in Streatley
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Basildon Park (about 2.1 miles south-east) nearby, there’s older building stock in the area around Streatley as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Streatley C.E. Voluntary Controlled School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Goring & Streatley station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Streatley is about 7 miles south-east of Didcot, in Oxfordshire. If you need external mastic in Streatley, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Oxfordshire from our Crawley base. Our Oxfordshire coverage runs to 443 places, Streatley among them. For nearby work, see our Reading page (9 miles or so).
Work in RG8 works the same way as everywhere else we cover. We cover properties on High Street, Streatley Hill and The Bull Meadow. Other places close to Streatley include Goring (1 mile east), Lower Basildon (2 miles south-east), South Stoke (2 miles north), Moulsford (2 miles north) and Elvendon (2 miles east). Further out, we also cover Didcot (7 miles north-west), Abingdon-on-Thames (12 miles north-west), Wantage (13 miles west), Henley-on-Thames (11 miles east), Grove (13 miles north-west) and Benson (7 miles north).
Local landmarks in Streatley
Locally, jobs take us to homes and businesses close to The Bull Hotel. For rail, the closest station is Goring & Streatley station, roughly 0.8 miles east. Other landmarks nearby include Yattendon Castle (4.5 miles south-west). For a walk, there’s Withymead Nature Reserve and Churn Hill.
Different surfaces, different methods
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that’s happened, we rake it out and reseal it properly if the joint can be cleared.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
What we do, step by step
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. The job usually takes a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. For a village or hamlet like Streatley, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
Get a quote
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Advice
Common problems we fix in Streatley
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
These are the problems we are asked about most:
- Water getting into walls through failed joints
- Failed seals between different materials
- Panel joints letting water in
- Rigid filler in a joint that should flex
If you live in an older home near Church of St Mary, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What your quote should include
- Is the old sealant removed completely?
- Which colour the sealant will be
- What insurance they hold
- How the surfaces are prepared before sealing
What affects the quote in Streatley
Your quote is based on your job. We look at:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- Whether there’s mould to deal with
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The rough size of the job
- Whether it has been sealed before
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Streatley: your questions answered
I let a flat near Goring & Streatley station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Can you do external mastic in Streatley?
Yes. Our work covers London and the South East, and Streatley is part of that. You can call 0345 464 0079 or email us and tell us what needs doing.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Is it OK to seal over old sealant?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
What information do you need?
Let us know what needs doing and where. We will ask anything else we need to know.
Can you match the colour of my brickwork?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin from the range available.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint before we leave.