Oxfordshire · England
External & façade joints in Mapledurham, Oxfordshire
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Mapledurham and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Weathered mastic that no longer stretches
- Failed seals between different materials
External mastic for homes and businesses in Mapledurham
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant. If you are dealing with failed seals between different materials and hard, crazed mastic that has stopped moving, we can put it right, on concrete & block, copings & trims and brickwork movement joints alike.
In a village or hamlet like Mapledurham, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. 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 drop us an email.
- Place
- Mapledurham (RG8, RG4, RG31)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Mapledurham
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Look out for any of the following:
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Rigid filler in a joint that should flex
For site and facilities teams at buildings such as Purley CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Comparing quotes
- How the joint is cleaned and prepared
- What happens if the job turns out different
- Whether they seal over old material or remove it
- How long the guarantee is
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Movement that’s more than a sealant joint can take
- Cracked brickwork or render that needs a builder or plasterer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Surfaces we seal
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Copings & trims
External mastic in Mapledurham: local notes
Historic houses like Mapledurham House (about 0.1 miles east) are a reminder that the area around Mapledurham has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as Church of St Margaret and Bardolf Aisle, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Rented homes near Tilehurst station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Mapledurham is about 3 miles west of Caversham, in Oxfordshire. If you need external mastic in Mapledurham, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We’re based in Crawley and cover Oxfordshire. Mapledurham is one of 443 places in Oxfordshire where we work.
Work in RG8, RG4 and RG31 works the same way as everywhere else we cover. External mastic is available to properties on St Mary's Avenue, Park Walk and The Short and the roads around them. If you are just outside Mapledurham, we cover Purley on Thames (1 mile south-west), Trench Green (1 mile north-east), Tilehurst (2 miles south), Chazey Heath (2 miles east) and Norcot (2 miles south). We also work in nearby towns such as Didcot (12 miles north-west), Henley-on-Thames (7 miles north-east), Benson (10 miles north), Wallingford (9 miles north-west), Great Western Park (13 miles north-west) and Watlington (11 miles north).
Landmarks near Mapledurham
In Mapledurham, that means homes and buildings near Roebuck pub, Round Copse and Denefield School, among other places. For rail, the closest station is Tilehurst station, roughly 1 mile south. Well-known places in the area include Royal Berkshire Regiment Museum (2.4 miles south-east) and Battle Hospital (2.5 miles south-east). Open spaces near Mapledurham include South Lake and Moor Copse Nature Reserve.
Why act early in Mapledurham
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last. Older cottages and farmhouses around Mapledurham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before work begins, so you know where you stand.
Why book with us
- Sealant colour chosen to suit
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
- We agree the colour with you first
Take a look at our cost guide and what customers say.
How the job changes by surface
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one before the bead.
Questions from Mapledurham
I let a flat near Tilehurst station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Can you do external mastic in Mapledurham?
Yes, Mapledurham is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Can you seal over the old sealant?
No, it will not 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.
How do I get a quote for external mastic in Mapledurham?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
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 will explain our choice.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
How long will you be here?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer.
The process
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Mapledurham, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
Ask for a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
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Towns and villages near Mapledurham
Also in Mapledurham
Quotes for external mastic in Mapledurham
Every job gets its own quote. These are the things that affect it:
- Access and height
- How much there is to do
- The product the joint needs
- Any mould that needs treating
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.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Whether it’s a home or a business
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
For external mastic in Mapledurham, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.