When clients ask why one quote is significantly cheaper than another for what looks like the same job, the answer is almost always materials. Two patios built to identical designs with different stone, different sub-base, different jointing compound, and different fixings will not be the same patio in five years’ time. One will still look new. The other will have moved, faded, weeded up, or cracked.
This post is a practical guide to what to look for in the materials a landscaping project actually uses. It is written so you can read a quote and understand what you are paying for – or not paying for.
Choosing the Right Paving: Stone, Concrete, or Porcelain
Paving is the single biggest material decision in most landscaping projects. The three main options are natural stone, concrete, and porcelain, and each has a quality range from excellent to terrible.
Natural Stone
Sandstone, limestone, slate, granite, and yorkstone are the most common natural stone options in the UK. The quality range within each type is huge.
- What good looks like: consistent thickness (calibrated to roughly 22mm or 30mm), low porosity, dense grain, clean edges, and a quarry of origin you can verify. Indian sandstone from a reputable supplier is excellent value for money. British yorkstone is the premium option.
- What cheap looks like: wildly variable thickness, high porosity (water sits on the surface in puddles), pitted faces, soft material that scratches with a fingernail, and unverifiable origin.
Cheap natural stone fails in three ways: it weathers unevenly within a year or two, it stains permanently from any iron content, and the soft pieces start spalling at the corners.
Concrete Paving
Modern concrete pavers can be excellent. They are also where you find the worst budget products on the market.
- What good looks like: vibration-pressed (not wet cast), high cement content, named manufacturer with a guarantee, and a surface treatment that resists fading and algae.
- What cheap looks like: lightweight, sandy texture, fades in months, and spalls in winter frost.
Brands that produce premium concrete paving will warranty their product for 10 to 25 years. Bargain bin pavers come with no guarantee at all because the supplier knows they will not survive that long.
Porcelain
Porcelain is the newest mainstream paving option and the highest performance. It is non-porous, fade-proof, stain-proof, and frost-proof.
- What good looks like: vitrified through-body porcelain (not just a porcelain top layer), 20mm thickness for outdoor use, R11 or higher slip rating, and consistent calibration.
- What cheap looks like: thinner (10-12mm) tiles meant for indoor use, lower slip ratings, and brittle edges that chip on installation.
Quality porcelain costs more than mid-range concrete or sandstone but it lasts longer than either and stays looking new for decades. Cheap porcelain is the worst of both worlds – expensive to install and prone to chipping.
Sub-Base and Bedding: The Bit Nobody Sees
The materials below the paving matter just as much as the paving itself, and they are where the cheapest contractors cut corners because the client never sees them.
- MOT Type 1 sub-base: the standard for paving and driveways. Crushed limestone or granite, compacted in layers. Skimping on depth (80mm minimum for foot traffic, 150mm+ for vehicles) is the single most common cause of patios that sink. See our guide to sub-base preparation fundamentals for the detail.
- Bedding mortar or grit sand: the layer the paving sits on. The wrong material here causes paving to rock, crack, or stain.
- Jointing compound: modern resin-based jointing compounds are dramatically better than old-fashioned sand and cement mortars. They flex, resist weeds, and do not crack out. Worth the upgrade every time.
If a quote is unusually cheap, ask specifically about sub-base depth and jointing material. The answer will tell you a lot.
Timber: Hardwood vs Softwood
Timber decks, fences, raised beds, screens, and pergolas all have to live outdoors permanently. The species and treatment determine how long they last.
- Pressure-treated softwood (typically pine or spruce): the budget option. Lifespan with proper treatment is 10 to 15 years. Adequate for fences, raised beds, and structures that will be replaced eventually.
- Tanalised softwood: a higher-grade pressure treatment with a longer lifespan. A noticeable step up.
- Hardwoods (oak, iroko, balau): premium options, 20 to 50 years of life depending on species and treatment. The look is also better – hardwoods weather to a silver-grey rather than going green and rotting. Iroko availability has tightened in recent years due to export restrictions on source timber, which has pushed UK prices up. Teak is occasionally specified but CITES paperwork and sustainability concerns mean most reputable UK merchants no longer stock it for new landscaping. Accoya (modified softwood with a 50-year ground-contact guarantee from most UK merchants) has become the go-to alternative where hardwood cost or availability is an issue.
For decking specifically, composite is increasingly the right answer. Modern capped composite decking does not rot, splinter, or fade. Leading UK-specified brands are Millboard (UK-made, 30-year guarantee), Trex (US-made, 25-year guarantee), and Composite Prime (UK-based recycler). The upfront cost is higher than softwood but the lifetime cost is lower.
Walling: Block, Stone, or Render
The choice depends on what the wall is doing and what it has to look like.
- Render block: versatile, modern look, takes any colour finish. Needs proper foundations and reinforcement on retaining walls.
- Natural stone: premium look for traditional or rural properties. Dry stone walling is a specialist skill but the result is unmatched.
- Reclaimed brick: for period properties, nothing else looks right.
- Reinforced concrete (faced or rendered): essential for any retaining wall holding back significant weight.
The big risk with walling is undersizing the foundations or skipping the reinforcement on retaining structures. A wall that fails takes the bank with it, and the cost to put right is much higher than the cost of building it properly the first time.
Aggregates: Gravel, Mulch, and Decorative Stone
The visible loose materials in a garden also vary in quality.
- Decorative gravel: Cotswold stone, slate chippings, golden gravel, and flint are all UK-appropriate options. Quality matters less here than quantity (deep enough to suppress weeds and look intentional – 50mm minimum) and base preparation (always lay on a permeable membrane).
- Mulch: composted bark is the standard. Avoid dyed mulches and pure wood chip from fresh fellings, which can leach nitrogen out of the soil as they break down.
- Topsoil: one of the most overlooked decisions. Cheap topsoil is full of weed seeds, builders’ rubble, and infertile subsoil. BS3882-compliant topsoil from a reputable supplier costs more but will not waste a year of your planting effort.
Fixings and the Small Stuff
The bits no one quotes you for are often the bits that fail first.
- Stainless steel screws and fixings for any timber or coastal application – galvanised will rust and stain the wood.
- Concrete post bases for fence posts in damp ground – skip these and the posts rot at ground level within years.
- Edging strips that hold gravel and mulch in place – cheap plastic edging warps and lifts; quality steel or composite edging stays put.
- Drainage components – the right gully covers, channel drains, and connections matter as much as the drainage strategy itself.
These line items add up to surprisingly little money relative to the project total. Skipping them costs much more in the long run.
How to Read a Quote
If you are comparing landscaping quotes, the questions worth asking are:
- What is the sub-base depth and material?
- What brand and grade of paving is being used? Is there a manufacturer warranty?
- What is the jointing compound? Resin-based or sand and cement?
- For timber: pressure-treated softwood, tanalised, or hardwood?
- For walls: what are the foundations and reinforcement?
- Is the topsoil BS3882-compliant?
- Are fixings stainless steel where they need to be?
A contractor who gives you confident, specific answers to these is taking materials seriously. A contractor who waves the questions away is the one whose work will not last.
Material specifications are only one part of vetting a landscaper. For the broader checks that should sit alongside the quote review, see our guide on what a professional landscaper does and how to choose one.
Frequently Asked Questions
What is the best paving material for UK gardens?
It depends on budget and the look you are after. Indian sandstone is the most common cost-effective choice for most gardens. British yorkstone is the premium option for period properties. Outdoor-grade vitrified porcelain is the highest-performance option, non-porous and fade-proof, though the upfront cost is higher. Good vibration-pressed concrete paving from a named UK manufacturer can also be excellent value.
How thick should outdoor paving be?
Outdoor-grade porcelain is 20mm thick – anything thinner (10-12mm) is indoor tile and chips on installation. Natural stone should be calibrated to 22mm or 30mm. Sub-base depth matters as much as the paving itself: 80mm minimum of compacted MOT Type 1 for foot traffic, 150mm or more for vehicles.
Is porcelain paving worth the extra cost?
For most UK gardens, yes – if the budget allows. Porcelain does not fade, stain, or spall, and it resists frost cycles. A porcelain patio looks almost identical in 20 years to the day it was laid. Natural stone weathers and gains character; porcelain stays uniform. The choice depends on whether you want material patina or long-term uniformity.
What slip rating should patio paving have?
R11 is the working minimum for UK outdoor paving. The R rating measures pendulum slip resistance in wet conditions; lower-rated tiles sold for “indoor/outdoor” use are often unsafe on UK patios in rain. Always check the slip rating on porcelain specifically – it is not always clear from the product image.
Why This Matters for the Cost of the Project
A landscaping project built with quality materials is not a luxury – it is the version of the project that does not need to be redone. If you are likely to sell within a decade, surveyors and buyers will spot bargain materials immediately, and the perceived value of the work drops accordingly.
If you want to understand how materials fit into the wider scope of a landscaping project, our step-by-step process guide walks through where each decision happens. For the broader picture of what a professional landscaper does, see our pillar guide to landscaping services.
Talk to Us About Materials for Your Project
If you would like an honest steer on which materials are right for your specific project and budget, get in touch. We cover Hampshire, Surrey, and West Sussex and we will spec your project to last.
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