Patio slabs that rock underfoot are a bedding or drainage problem, and they won't fix themselves. Plex Group explains why it happens and what a proper repair looks like across Worcestershire and Gloucestershire.
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The most reliable method for bedding paving slabs is a full mortar bed — mortar covering the entire underside of the slab, with no voids. A cheaper and faster alternative is to spot-bed: placing five blobs of mortar at the corners and centre. Spot-bedded slabs are structurally inferior from day one, particularly on clay ground. Any unevenness in the sub-base beneath creates a pivot point, and the slab rocks immediately or begins rocking within a season or two.
If your patio has open joints or cracked jointing compound, water enters the gaps and washes out the sand or mortar beneath each slab over time. Once the bedding is uneven or absent in places, the slab loses its stable platform. The heavier the slab, the more dramatically it rocks. This process accelerates in winter when frost also disrupts the bedding from below.
Even correctly bedded slabs can begin to rock if the sub-base beneath them moves. In Worcestershire and Gloucestershire, clay soils contract in dry summers and expand in wet winters. If the sub-base layer isn't thick enough to buffer this movement, it transmits directly to the bedding layer and then to the slab. Slabs in corners and along edges are often the first to be affected.
Roots growing beneath a patio create uneven upward pressure. They lift one side of a slab while leaving the other side at its original level, producing an obvious rocking motion. In established gardens across the Cotswolds and Vale of Evesham, root intrusion is a common cause of rocking slabs that returns quickly even after re-bedding.
A 10-day full-property hardscape overhaul in Guiting Power, featuring French Dolomite Limestone porcelain throughout, a bespoke pergola over an outdoor kitchenette, and full perimeter drainage.
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A 6-day boundary extension and fence installation in Kingham, built using tongue and groove cladding to create a seamless, architectural finish.
A 20 year old timber deck replaced with frosted blue composite boarding, a custom step, and a built-in fish pond access hatch
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Plex Group inspects and repairs rocking patio slabs across Worcestershire, Gloucestershire, Oxfordshire, and Warwickshire. In most cases we can identify the problem in a single site visit — distinguishing between localised bedding failure, drainage problems, and more widespread sub-base issues. We'll tell you honestly what the repair involves and whether a full relay is necessary. Get in touch to arrange an assessment.
Rocking slabs are a symptom of a bedding or drainage problem, not just wear and tear. Plex Group diagnoses and fixes patio slab movement across Worcestershire, Gloucestershire, and Warwickshire.
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Ivy roots into the core of a drystone wall and forces the stones apart, and pulling it off makes the damage worse. Plex Group explains what is happening and the right way to fix it across the Cotswolds.
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A bulging drystone wall means the core has failed and the faces are separating. Plex Group explains why it happens and how a proper rebuild works across the Cotswolds and Gloucestershire.
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Bouncy decking means the subframe below the boards is underbuilt, failing or rotten. Plex Group explains the causes and what a proper repair looks like across Worcestershire and the Cotswolds.
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From the initial meeting to the final clear up Patrick and Luke were unfailingly polite and professional. Patrick’s quotation for the work was sensible with a detailed breakdown. The work was started on time and was kept to time. The resulting terracing exceeded expectations and the work area was left cleaner than when the team arrived. I cannot thank Patrick, Luke and Jake enough for all their work and would have no hesitation in recommending PLEX Group.
It has been a pleasure having Plex work with me on my garden project. Totally engaged, very communicative and prompt. Access to my property is difficult but they just worked around any problems with a refreshing 'can do' attitude. I would happily recommend Plex to anyone working on a garden project.
Fantastic work and would highly recommend. The team were professional, friendly, considerate, hard working and flexible to ensure the works met our needs and expectations. Really nice team to have on site and were respectful and kept it as tidy as they could. Very impressed with the work and looking to get them to come back to do a couple of other jobs for us in the future.
I am really happy with the work that Plex did. They came up with solutions to problems that arose quickly, efficiently and without any stress. They were friendly, professional, organised, efficient and had excellent communication.
We have recently had a new garage installed from the Plex team and we are thrilled with the finished product. Can't thank Patrick Luke and their team enough. Would highly recommend.
I would highly recommend Luke and Patrick and their team. They are all extremely polite and hard-working. They put up a new pergola in our back garden and tidied up the edges of the garden. An excellent job.
Patrick, Luke and their team have transformed our sloped garden giving us a lovley functional space. They removed a hedge sadly over run with brambles with a fence gaining us a couple more meters of garden too! Despite having a week of rain they did their best to clear up at the end of the job. We would highly recommend this professional team.
Luke and Patrick have completed two projects for us now. They are the most polite and professional people with a hardworking team of individuals. Nothing is too much trouble for them.
Luke and his team are really lovely and professional. Cannot recommend him enough.
Luke and the team are absolutely brilliant. A passion for what they do and personal but professional, so pleased to have found them!
Really pleased with the concrete base for my carport that was completed by the team , worked really hard in poor weather conditions . Great job would definitely recommend the team .
Our garden has never looked better - hard-working, thorough, and also great at getting in touch if there's a change to the schedule, etc. They have nursed our box hedging back to health. Before and and after photos are a bonus!
Competitive price wise even though the work carried out was to a very high standard. I was very pleased with the end result and impressed with the tidiness they left the garden after all the work was carried out. A very happy customer!
Very obliging and efficient we have worked out a schedule that suits us both.
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