Global Stone's natural riven sandstone has handcut edges and a naturally uneven surface. Buff brown comes in buff, tan and honey brown shades
This paving has a moderate amount of colour and shading variation present within the range
During tests, this paving absorbs less than 0.21% water when fully saturated. The lower the water absorption, the lower the risk of algae growth and staining. By comparison, concrete paving has an average water absorption of 6%
During testing, this paving showed flexural strength of 27.7 Mpa. The flexural strength value shows how much bending stress a paving unit can be put under before it breaks and the higher the number, the stronger the paving. By comparison, concrete paving has an average flexural strangth of 5 Mpa
During a repeated test cycle of freezing to -40 degrees Fahrenheit, followed by thawing, this paving only lost 1 Mpa of flexural strength. This result demonstrates excellent paving resilience
This paving has a slip resistance PTV rating of 51.8 when wet. A pendulum is used to swing across the stone to determine friction. The rougher the surface, the more the pendulum slows and the higher the value
There are many types of natural stone available, so it is important to choose the right natural stone for you.
Global Stone is an industry-leading supplier of premium natural stone paving. The company takes pride in selecting all of their natural paving by hand to ensure that it is always of the highest quality. Selected by experts, their stone is used by architects, landscapers, gardeners, designers and homeowners across the country. Global Stone believes in providing their customers with a beautiful variety of stone products that look good today, tomorrow and for years to come. Their product range has grown from a simple collection of paving options to cobble sets, circles, features, fountains and benches in a spectrum of stone types and styles.
Natural Stone Characteristics:
All natural stone products are unique and will vary in colour and texture, often showing distinctive markings, minor imperfections and may include mineral deposits such as iron and quartzite. Sizes are nominal and may vary. Some paving manufacturers include the pointing allowance in the individual slab sizes whereas others include the pointing allowance in the overall pack coverage. The product images shown are as accurate as photographic processes allow and may appear differently in accordance with lighting conditions and screen calibration in addition to the natural variation occurring between batches. Images may not be a true representation of a particular product size, use or laying pattern. Descriptions provided offer a combination of the manufacturer's and our own opinion of the product's characteristics and features.
Sandstone is a type of sedimentary rock formed of gritty sand grains and is available in a variety of colours. Sandstone paving is available in a range of different textures, often relying on secondary processing to achieve these finishes.
- Variable Thickness Riven Sandstone This type of sandstone has a natural cleft, uneven surface texture with occasional ridges and the edges of the slabs are usually tapered with the larger face of the slab to be laid uppermost. Variable thickness stone, i.e. those marked with a depth range such as 15-22mm +/- (refer to the Unit Depth description) have a wider variation in thickness than a calibrated thickness stone. When laid on a full mortar bed, this enables any variation in thickness to be adjusted within the bed.
- Calibrated Riven Sandstone Many riven sandstone products are offered at a 'calibrated' thickness which means the paving has been cut to a less variable, relatively even depth, usually around 22mm +/-, to make it easier to lay. The +/- indictaes a minor tolerance on the dimensions in accordance with British Standards. This paving should still be laid on a full mortar bed.
Sandstone is available in a wide range of colours, some subtle and some vivid. The ranges comprise of a selection of core colours combined with subtle contrasting shades, and the balance of shades can vary between batches of even the same stone due to different seams in the stone quarry occurring over time. The blend of colours may include grey, pink, khaki, maroon, buff and many more shades which when combined, create the mix of colours associated with the colour name of the paving. The colour intensity increases when the paving is wet. Most brands offer the same range of colours with slightly different names. If colour variation is not a desirable feature, then it is recommeneded that natural stone and especially sandstone should not be considered as a paving choice. BE AWARE that not ALL sandstone is the same quality - some unknown brands may not have been tested for suitability in the UK climate and may crack during cold weather.
Delivery: Currently approx. 3-5 working days. Due to Covid-19 these might change, for more information on delivery times read our Covid-19 Update.
Please select a product option from the table above to see full specification.
This layout is for example purposes only. Mixed sized patio packs are not sold as a kit. Please ensure that you allow a minimum of 10% extra above your measurements as margin.