If you’ve never had a patio professionally installed before, it’s natural to want to know what’s actually involved — how long it takes, what the disruption looks like, and why proper installation costs more than simply laying slabs on the ground. Here’s our step-by-step process, and why each stage matters for a patio that lasts.
Step 1: Site Survey and Design
Before any work begins, we visit your property to measure the space, assess ground conditions (including soil type and existing drainage), and discuss your design preferences and budget. This stage also identifies any potential complications — access issues, existing structures to remove, drainage challenges — that need factoring into the quote and timeline.
Step 2: Excavation
The existing ground is excavated to the correct depth to accommodate the sub-base, bedding layer, and paving itself — typically 150–200mm total depth for a domestic patio, though this varies depending on ground conditions and the intended use of the space. On sites with heavy clay soil, common across much of Cheshire, this stage often requires additional attention to ensure adequate drainage beneath the finished surface.
Step 3: Sub-Base Installation
A compacted sub-base — usually MOT Type 1 hardcore — is laid and mechanically compacted in layers. This is arguably the single most important stage of the entire installation: a poorly compacted or insufficient sub-base is the leading cause of patios that later crack, sink, or develop uneven surfaces. This is also the stage where a professional installation differs most significantly from a DIY approach, since proper compaction requires the right equipment and technique.
Step 4: Drainage Consideration
Falls (a slight slope) are built into the sub-base to direct rainwater away from the property and toward appropriate drainage, whether that’s a soakaway, existing drain, or permeable jointing system. This is a legal requirement for larger paved areas under UK sustainable drainage regulations, and it’s essential for preventing standing water and long-term surface damage regardless of the area’s size.
Step 5: Laying the Bedding Layer
A bedding layer — typically a semi-dry mortar mix — is laid on top of the compacted sub-base, providing a stable, even bed for the paving slabs to sit on.
Step 6: Laying the Paving
Slabs are laid one at a time, checked for level and fall as the work progresses, with spacers used to maintain consistent joint widths. This stage is where design details — pattern, layout, cuts around features like drains or steps — come together, and it requires precision to ensure a professional, even finish. If you haven’t chosen a material yet, our guide to porcelain vs natural stone patios covers the key differences.
Step 7: Jointing
Once the paving is laid and settled, joints between slabs are filled — typically with a specialist jointing compound for porcelain or natural stone, which resists weed growth and staining better than traditional sand jointing.
Step 8: Final Clean and Handover
The finished patio is cleaned to remove any residue from installation, and we walk you through the completed space, covering any care and maintenance guidance relevant to your chosen material — see our guide on maintaining a porcelain patio if that’s what you’ve chosen.
How Long Does Patio Installation Take?
For a typical domestic patio, installation usually takes between 3 and 7 days, depending on size, ground conditions, and design complexity. Larger or more complex patios, or those requiring significant groundwork and drainage work, can take longer.
What Disruption Should You Expect?
Expect some noise from excavation and compaction equipment, deliveries of materials and aggregate to site, and machinery access requirements — this is worth discussing during the site survey if access to your garden is limited, since it can affect both timeline and cost.
Why the Groundwork Stages Matter More Than the Paving Itself
It’s tempting to think of a patio as simply “the slabs,” but the excavation, sub-base, and drainage stages are what determine whether a patio lasts for decades or starts showing problems within a couple of years. This is also why quotes can vary significantly between contractors — a lower quote may reflect corners cut at the groundwork stage, which won’t be visible until problems appear later.
Related Reading
- Porcelain vs Natural Stone Patios: Which Is Right for Your Garden?
- How to Maintain a Porcelain Patio: Cleaning & Care Tips
Frequently Asked Questions
How long does a typical patio installation take?
Most domestic patio installations take between 3 and 7 days, depending on size and ground conditions, though larger or more complex projects can take longer.
Why is the sub-base so important?
The sub-base provides the structural foundation for the entire patio. A poorly compacted or insufficient sub-base is the most common cause of cracking, sinking, and uneven surfaces over time.
Do I need planning permission to install a patio?
Most domestic patios don’t require planning permission, though rules can vary in conservation areas or for very large paved areas without adequate drainage — worth checking with your local council or asking your contractor if you’re unsure.
Can a patio be installed in winter?
Yes, patio installation can generally continue through much of the year, though extended frost or heavy rain can occasionally cause short delays to groundwork stages.
Ready to Start Your Patio Project?
Book a free site survey and we’ll walk you through the full process for your specific garden and material choice.Request Your Free Quote →