Types of Paving Slabs: Pros, Cons and Which Is Best for Your Patio

Choosing paving slabs is not simply a question of selecting the colour that looks best in a photograph. The material affects the finished appearance, maintenance, slip resistance, cutting, installation method, delivered cost and long-term performance of the paved area.

Some paving materials suit clean contemporary gardens, while others work better with traditional properties, natural planting or older brickwork. The right choice also depends on how the space will be used. A quiet garden path, an outdoor dining area and a vehicle driveway do not place the same demands on the paving or the supporting construction.

This guide compares the main types of paving slabs used in UK gardens, including porcelain, Indian sandstone, smooth sandstone, granite, limestone, slate and concrete. It explains the advantages, limitations, maintenance requirements and most suitable applications of each material, helping you make a practical decision rather than choosing by appearance alone.

What Are the Main Types of Paving Slabs?

The main paving slab categories used for UK patios and garden landscaping are:

• Porcelain paving: manufactured outdoor tiles with very low water absorption, controlled sizing and a consistent surface design.
• Indian sandstone paving: natural sedimentary stone valued for colour variation, riven texture and traditional patio character.
• Smooth sandstone paving: sawn and usually honed sandstone with a flatter and more refined finish.
• Granite paving: dense igneous stone, commonly flamed for outdoor grip and used where strength and durability are important.
• Limestone paving: fine-textured natural stone with a calmer and often more uniform colour tone than sandstone.
• Slate paving: layered metamorphic stone with strong texture and typically darker colours.
• Concrete paving: manufactured slabs made from cement, aggregates and pigments, available in a wide range of sizes and surface styles.

Paving Slab Comparison Table

Important: Cost comparisons should be made on the same basis. Check whether the quoted price includes VAT, delivery, regional surcharges, split-pack charges and the correct pack coverage. Thickness, slab size, surface finish and wastage allowance can also affect the real project cost.

Porcelain Paving Slabs

What Is Porcelain Paving?

Porcelain paving is manufactured from refined clay and minerals fired at very high temperatures. The firing process creates a dense outdoor paving tile with very low water absorption. Most outdoor porcelain slabs use a printed and textured surface to reproduce the appearance of stone, concrete, slate, timber or other materials.

In the UK, 20 mm outdoor porcelain is widely used for modern patios because it provides straight edges, accurate sizing and controlled colour. Rectified edges also allow a cleaner joint pattern than most hand-dressed natural stone paving.

Main Advantages of Porcelain Paving

• Very low water absorption helps resist staining, algae growth and frost-related deterioration.
• Normally does not require sealing.
• Easy to clean when drainage and jointing have been designed correctly.
• Consistent thickness and dimensions support precise contemporary layouts.
• Available in a broad range of colours, textures and stone-effect designs.
• Well suited to outdoor kitchens, dining areas and frequently used patios.

Main Limitations of Porcelain Paving

• Harder to cut than many sandstones and limestones.
• Requires a suitable slurry primer to bond to a traditional mortar bed.
• Edges can chip through poor handling, unsuitable blades or careless cutting.
• Repetitive print patterns can make lower-quality products look artificial.
• Less forgiving of poor installation than traditional riven sandstone.

Best Uses for Porcelain Paving

Porcelain is normally the most practical choice for homeowners who want a modern, clean and low-maintenance patio. It is especially suitable for outdoor dining, garden furniture and areas where food, drinks or general staining are likely.

It is less suitable where the design requires genuine geological variation, hand-dressed edges or the aged character of natural stone.

Installation point: Exterior porcelain should be laid on a stable base and full mortar bed, with complete slurry primer coverage to the underside. Spot bedding and incomplete primer coverage increase the risk of movement or debonding.

Browse our outdoor porcelain paving slabs or read our porcelain paving FAQs.

Indian Sandstone Paving Slabs

What Is Indian Sandstone Paving?

Indian sandstone is a natural sedimentary stone formed from compacted sand grains bonded by silica and other minerals. Paving slabs are quarried from suitable stone beds, split or sawn to the required surface, cut to size and commonly calibrated to improve thickness consistency.

It remains one of the most established natural stone choices for UK patios, paths and garden landscaping. Popular colours include Kandla Grey, Raj Green, Rippon Buff, Autumn Brown and Indian York.

Sandstone quality is not determined by colour alone. Quarry-bed selection, splitting quality, calibration, hand-dressing, grading and packing standards all affect the final installation. Poor sorting can result in excessive thickness differences, weak slabs or inconsistent surface quality.

Main Advantages of Indian Sandstone

• Authentic natural colour variation and mineral character.
• Riven surfaces complement traditional British gardens and older properties.
• Generally easier to cut and shape than porcelain or granite.
• Available in mixed-size patio packs and single-size formats.
• Can be coordinated with sandstone setts, steps, wall copings and other landscaping products.
• Widely understood by experienced UK landscapers.

Main Limitations of Indian Sandstone

• No two slabs are identical in colour, markings or surface texture.
• Riven surfaces are less flat than porcelain or sawn paving.
• Natural weathering can soften or alter the original colour over time.
• It absorbs more water than porcelain and may require more routine cleaning.
• Some installations benefit from sealing, but sealing is not automatically necessary in every location.

Best Uses for Indian Sandstone

Indian sandstone is a strong all-round choice for traditional patios, cottage-style gardens, natural paths and landscaping schemes where individual slab variation is part of the intended appearance.

It is not the best option for customers expecting perfectly identical colour, a completely flat surface or almost maintenance-free ownership.

Buying point: Compare slab thickness, calibration, surface quality and grading rather than choosing only by colour or the lowest advertised square-metre price.

Browse our Indian sandstone paving slabs or read our Indian sandstone paving FAQs.

Smooth Sandstone Paving

What Is Smooth Sandstone?

Smooth sandstone is natural sandstone that has been sawn and normally honed or otherwise refined to produce a flatter face than traditional riven paving. It retains natural colour and mineral variation but gives the patio a cleaner and more controlled appearance.

Main Advantages of Smooth Sandstone

• Flatter and more contemporary than riven sandstone.
• Retains the authentic colour and mineral structure of natural stone.
• Comfortable beneath garden furniture and in barefoot areas.
• Provides a useful middle ground between traditional sandstone and porcelain.

Main Limitations of Smooth Sandstone

• The refined face can show handling marks, mortar contamination and staining more clearly.
• Light colours may require sealing in shaded, dining or frequently used locations.
• Slip resistance depends on the precise surface finish and should not be judged by the word “smooth” alone.
• Requires more careful storage, handling and installation than basic riven paving.

Best Uses for Smooth Sandstone

Smooth sandstone suits refined patios, outdoor dining areas and contemporary gardens where natural stone is preferred but a coarse riven surface is not.

Browse our smooth sandstone paving.

Granite Paving Slabs

What Is Granite Paving?

Granite is an igneous natural stone formed as molten rock cools slowly below the earth’s surface. Its crystalline structure commonly includes quartz and feldspar, producing a dense and highly wear-resistant paving material.

Outdoor granite paving is usually sawn to size and flamed or textured to improve grip. It is also produced as setts, steps, kerbs and edging, allowing the same material family to be used across a complete hard-landscaping scheme.

Main Advantages of Granite Paving

• High strength and strong resistance to surface wear.
• Low water absorption compared with many sandstones.
• Flamed surfaces provide a practical external texture.
• Well suited to paths, steps, entrances and frequently used patios.
• Generally more consistent in colour and surface finish than riven sandstone.
• Available in coordinated slabs, setts, kerbs and steps.

Main Limitations of Granite Paving

• Heavy to handle and more demanding to cut.
• Installation can require more labour than softer stone.
• Usually costs more than entry-level sandstone or standard concrete paving.
• Cool grey colours and crisp textures may look formal in rustic garden settings.

Best Uses for Granite Paving

Granite is suitable where durability, precise lines and long-term performance are more important than warm colour variation. Typical applications include high-traffic patios, steps, pathways, entrances and commercial-style garden details.

Driveway point: Granite can be suitable for vehicle areas when the slab or sett format, thickness, tested performance and full construction specification are appropriate. Standard patio slabs should not automatically be treated as driveway paving simply because the stone itself is strong.

Browse our granite paving slabs or read our granite paving FAQs.

Limestone Paving Slabs

What Is Limestone Paving?

Limestone is a sedimentary natural stone formed mainly from calcium-rich material. Many paving limestones have a fine grain and calmer colour movement than sandstone, giving the finished patio a softer and more uniform appearance.

Main Advantages of Limestone Paving

• Fine surface texture and understated natural character.
• Often more uniform in colour than multicoloured sandstone.
• Generally easier to cut than granite or porcelain.
• Works well with simple, calm and restrained garden designs.

Main Limitations of Limestone Paving

• Calcium content makes limestone vulnerable to acid-based cleaners.
• Black and other dark limestones can lighten through weathering and surface change.
• Colour options are usually narrower than sandstone or porcelain.
• Sealing may be advisable where colour retention, staining or shaded conditions are concerns.

Best Uses for Limestone Paving

Limestone suits patios where the design calls for natural stone with less colour movement than sandstone. It can work particularly well in understated contemporary schemes and gardens using grey, blue-grey or dark paving tones.

Customers choosing darker limestone should be given realistic expectations about colour change and maintenance rather than being promised a permanently unchanged surface.

Browse our limestone paving slabs or read our limestone paving FAQs.

Slate Paving Slabs

What Is Slate Paving?

Slate is a metamorphic stone formed under heat and pressure. Its mineral structure develops in layers, producing a naturally cleft surface and a different visual character from granular stones such as sandstone or granite.

Main Advantages of Slate Paving

• Strong layered texture and distinctive natural appearance.
• Available in dark grey, black, blue and multicoloured tones.
• Creates effective contrast with planting, timber, gravel and light walls.
• Can suit both contemporary and character-led landscaping.

Main Limitations of Slate Paving

• Quality varies considerably between deposits and suppliers.
• Poor-quality slate may flake, split or delaminate.
• Thickness control and calibration are important for neat installation.
• Natural mineral marks and surface weathering should be expected.

Best Uses for Slate Paving

Slate is most suitable where a darker, layered and visually prominent paving surface is required. It can be highly effective for feature patios and modern garden schemes, provided the material is properly selected for external use.

The term “slate” alone is not a guarantee of performance. Origin, geological quality, thickness, calibration and grading matter more than the product name.

Browse our slate paving slabs or read our slate paving FAQs.

Concrete Paving Slabs

What Is Concrete Paving?

Concrete paving slabs are manufactured from cement, aggregates, sand, water and pigments. They are moulded or pressed into set formats and may be produced with smooth, textured or stone-effect surfaces.

Main Advantages of Concrete Paving

• Widely available in many sizes and colours.
• Often selected where initial material cost is a major consideration.
• Manufactured dimensions can simplify setting out.
• Suitable for utility patios, basic paths and straightforward garden projects.

Main Limitations of Concrete Paving

• Lower-cost products may fade or show surface wear.
• Manufactured stone effects may not reproduce natural variation convincingly.
• Some concrete develops efflorescence, although this commonly reduces with weathering.
• Ageing characteristics differ from natural stone and porcelain.

Best Uses for Concrete Paving

Concrete paving is a practical option for simple garden areas, utility spaces and cost-sensitive projects. It should be judged by the quality and specification of the individual product rather than assuming that all concrete paving performs or looks the same.

Natural Stone vs Porcelain vs Concrete

Choose Natural Stone When

• You want genuine mineral markings, colour movement and individual slab variation.
• The garden design is traditional, rustic or intended to weather naturally.
• You value authentic material character more than exact repetition.
• You are prepared for some routine cleaning and material-specific maintenance.

Choose Porcelain When

• You want controlled colour, straight edges and consistent sizing.
• Low water absorption and easier cleaning are high priorities.
• The design is contemporary or requires a precise joint pattern.
• You have an installer familiar with external porcelain installation.

Choose Concrete When

• Initial material cost and broad availability are primary concerns.
• The area is functional rather than design-led.
• You prefer a manufactured product available in standard formats.

None of these categories is automatically superior. A well-selected natural stone, porcelain or concrete product can perform successfully when its specification matches the application and it is installed correctly.

Paving Finishes Explained

The surface finish affects appearance, grip, cleaning, comfort underfoot and how easily the paving shows marks. Two slabs made from the same stone can behave and look noticeably different after different surface treatments.

Riven Finish

A riven surface is created by splitting stone along its natural bedding. It has an uneven, textured face and is commonly associated with traditional Indian sandstone. Riven paving offers natural character but is less suitable where a very flat surface is required.

Sawn Finish

Sawn paving is cut by machine to produce a flatter and more uniform face. Sawing is often the first stage before honing, sandblasting, flaming or another secondary finish.

Honed or Smooth Finish

Honing refines a sawn face to create a smoother appearance. Outdoor honed stone should still have an appropriate external surface texture. A polished internal finish should not be confused with paving designed for outdoor use.

Flamed Finish

Flaming exposes the crystal structure of suitable stone, particularly granite, and creates a textured external surface. It is widely used where grip and a consistent finish are required.

Tumbled Finish

Tumbling softens edges and can create a worn or aged appearance. It is often used for traditional garden designs, courtyards and character properties.

Textured Porcelain Finish

Outdoor porcelain is manufactured with a textured face designed for external use. Slip performance should be checked from the product specification rather than judged only by touching a dry sample.

Which Paving Slab Is Best for Each Application?

Best Paving for a Traditional Patio

Indian sandstone is usually the clearest choice for traditional patios because its natural riven texture, colour variation and hand-finished edges work well with brick, stone walls and established planting. Tumbled natural stone can also suit older properties and courtyard-style spaces.

Best Paving for a Modern Patio

Porcelain is normally the most practical modern option because it offers controlled colour, rectified edges and consistent formats. Flamed granite and smooth sandstone also suit contemporary gardens when genuine natural stone is preferred.

Best Paving for an Outdoor Dining Area

Porcelain performs well in dining areas because it absorbs very little water and is easier to clean after food or drink spills. Smooth sandstone can also work effectively but may need sealing depending on colour, shade and expected use.

Best Paving for a Garden Path

Indian sandstone, limestone and textured granite can all be suitable for garden paths. Selection should account for wet-weather grip, drainage, expected foot traffic and how level the surface needs to be.

Best Paving for Steps and Entrances

Textured granite is a strong option for steps and entrances because of its wear resistance and crisp manufactured dimensions. Appropriate step units, overhangs, bedding, jointing and edge details remain essential.

Best Low-Maintenance Paving

Porcelain is generally the lowest-maintenance slab category because it has very low water absorption and normally requires no sealing. This does not make the whole installation maintenance-free: joints, drainage channels and shaded areas still require cleaning.

Best Paving for Natural Variation

Indian sandstone normally provides the broadest and most familiar natural colour variation. Slate offers layered character, while granite and limestone usually give a calmer and more consistent natural appearance.

Best Paving for Driveways

Do not assume that a standard patio slab is suitable for vehicle loading. Driveway performance depends on the paving unit, dimensions, thickness, tested strength, sub-base, bedding system, edge restraint, drainage and expected vehicle weight.

Purpose-made block paving, natural stone setts and appropriately specified granite units are normally safer choices than using ordinary large-format patio slabs without a confirmed driveway specification.

For driveway products, see our stone setts and cobbles collection and block paving FAQs.

What Should You Consider Before Buying Paving Slabs?

1. Appearance and Variation

Natural stone varies by geology, quarry bed and batch. A sample can show the general stone type but cannot represent every slab in a full pack. Porcelain is more controlled, but print variation and the number of different faces should still be considered.

2. Surface Texture and Slip Resistance

A paving surface should be appropriate for external use and the expected location. Wet areas, shaded paths, steps and swimming-pool surroundings require more attention than a dry, open patio. Do not rely on colour or visual texture alone when a tested slip classification is available.

3. Thickness and Intended Use

Outdoor porcelain is commonly supplied at 20 mm. Natural stone paving is often supplied around 20–30 mm, depending on the material and format. Thickness alone does not establish suitability: the complete product specification and supporting construction are equally important.

4. Base and Bedding

A stable sub-base and full mortar bed are fundamental to long-term patio performance. Spot bedding leaves unsupported voids and can contribute to movement, cracking and staining.

5. Slurry Primer

Porcelain and dense natural stones commonly require a suitable slurry primer to create a reliable bond between the slab and mortar bed. Primer should cover the complete underside immediately before laying.

6. Drainage

The paved area should be constructed with an appropriate fall so water moves away from buildings and does not remain trapped on the surface. Drainage design should be considered before the paving is installed, not after standing water appears.

7. Joint Width and Jointing Material

Joint width should match the paving type, edge finish and manufacturing tolerance. Rectified porcelain normally uses more controlled joints than hand-dressed riven stone. The jointing material must also be suitable for the joint dimensions and installation environment.

8. Sealing

Porcelain normally does not require sealing. Natural stone sealing depends on the stone, colour, finish and use. Smooth or light-coloured stone, shaded areas, outdoor dining spaces and heavily used patios are more likely to benefit from a suitable sealer.

9. Wastage and Extra Slabs

Allow for cutting, natural variation and accidental damage. Larger or more complex layouts usually require a higher allowance than simple rectangular patios. Keeping a small quantity from the original batch can also help with future repairs.

What Affects the Cost of Paving Slabs?

The real cost of paving is not simply the lowest displayed price per square metre. The following factors can materially change the final amount:

• Material and finish: riven, sawn, honed, flamed and tumbled products require different levels of processing.
• Thickness and slab size: thicker and larger units normally use more raw material and increase handling costs.
• Pack coverage: compare the actual square metres in the pack rather than only the pack price.
• VAT: confirm whether advertised prices include VAT.
• Delivery: check whether delivery is included and whether regional surcharges apply.
• Split packs: buying individual slabs or partial packs may cost more per square metre.
• Installation: cutting difficulty, slab weight, primer, jointing and labour can outweigh a small difference in material price.
• Maintenance: cleaners, sealers and periodic treatment contribute to lifetime cost.
• Wastage: complex cuts, patterns and mixed formats increase the number of slabs required.

Porcelain is not automatically expensive, and natural stone is not automatically cheap. Product specification, processing, packaging and delivery can create more price difference than the material name alone. Compare like-for-like products on a VAT-inclusive and delivered basis wherever possible.

Frequently Asked Questions

What Is the Best All-Round Paving Slab?

There is no universal best option. Indian sandstone is a strong all-round natural stone for traditional UK gardens. Porcelain is usually better for low maintenance and consistent modern design. Granite is normally the stronger choice where high wear resistance is the main priority.

What Is the Lowest-Maintenance Paving Slab?

Porcelain paving is generally the lowest-maintenance option because of its very low water absorption and resistance to many common stains. It normally does not require sealing, although the patio still needs routine cleaning and sound drainage.

Is Porcelain Better Than Sandstone?

Porcelain is better for controlled colour, easy cleaning and low water absorption. Sandstone is better for authentic natural variation and traditional character. The correct choice depends on the design, installation skill and maintenance expectations rather than one material being better in every respect.

Which Paving Slab Lasts the Longest?

Granite and correctly specified porcelain can provide very long service life, but installation quality is critical. A strong slab laid on an unstable base or incomplete mortar bed can fail earlier than a less dense material installed correctly.

Is Porcelain Paving Slippery?

Outdoor porcelain should have a textured external surface and an appropriate slip classification. It should not be confused with smooth internal porcelain tiles. Dirt, algae, standing water and poor maintenance can still reduce grip on any paving surface.

Do Natural Stone Paving Slabs Need Sealing?

Not every natural stone patio must be sealed. Sealing is more useful for smooth, light-coloured, shaded, dining or heavily used areas. The stone must be clean and dry before treatment, and the sealer must be suitable for that specific material and finish.

Can Patio Slabs Be Used for a Driveway?

Not automatically. Vehicle areas require a confirmed paving specification and a correctly engineered base, bedding and edge-restraint system. Large patio slabs should not be used for driveways solely because they appear thick or are made from strong stone.

How Thick Should Patio Slabs Be?

Many outdoor porcelain slabs are 20 mm, while common natural stone paving is often around 20–30 mm. The appropriate thickness depends on the material, slab dimensions, strength and installation system. Thickness should never be assessed in isolation.

What Is the Cheapest Type of Paving Slab?

Basic concrete paving is often among the lowest-cost options, while standard Indian sandstone can also be competitively priced. The result changes when VAT, delivery, pack coverage, installation and maintenance are included, so the advertised unit price alone can be misleading.

How Much Extra Paving Should I Order?

A simple patio commonly requires an allowance for cutting and accidental damage. Complex patterns, diagonal layouts, steps and extensive edge cutting require more. Natural stone may also need additional selection to distribute colour and surface variation effectively.

Final Recommendation

Choose paving according to how the space will be used, not simply by the first photograph or lowest advertised price.

• Choose porcelain for consistent design and low routine maintenance.
• Choose Indian sandstone for traditional natural character and broad colour variation.
• Choose smooth sandstone for a refined natural stone patio with a flatter face.
• Choose granite for strength, crisp texture and high-traffic applications.
• Choose limestone for a softer and more uniform natural stone appearance.
• Choose slate for darker colours and distinctive layered texture.
• Choose concrete where initial material cost and functional use are the main priorities.

The paving material, installation system and supporting construction must work together. A well-chosen slab installed on the correct base, full mortar bed, suitable primer and properly drained surface will normally deliver better long-term value than a more expensive product installed incorrectly.

Explore our full range of paving slabs and patio slabs, or visit our paving slabs frequently asked questions for further technical and buying guidance.