Installation Guides

Laying Indian Stone Flagstones

Introduction
Springfields supply many types of paving materials and the most suitable laying method is determined by two principal factors: the type of paving unit (eg: paving stones, sets, kerbs) and the planned use (eg: patio, driveway, roof terrace). The following information is intended as a guide to the more usual projects that are likely to be undertaken by the more experienced DIYer.

Essential Tools
Professional landscapers would consider the following list of items essential for any paving project: Gloves, goggles, spade and/or shovel, wheelbarrow, brick trowel, pointing trowel, lump hammer, bolster chisel, rubber mallet, long spirit level, string line, line pins or stakes, soft brush, tape measure, straightedge timber, small cement mixer, plate compactor (‘wacker’ plate) and an angle grinder. However, If you are doing the job for yourself we recommend that you hire the larger items. You can purchase the smaller tools from us, Look in the Paving Tools department.

Setting-out
Paving should be laid at a level that is at least 150mm below the damp proof course (DPC) of any adjacent building except where level access is required at a doorway (eg: for disabled access). If working against a building, it may be possible to use the horizontal brickwork jointing as a guide to level. Alternatively, a taut string line or a temporary chalk line can be used as a guide.

Falls
All paving must be drained. This is usually achieved by sloping the paving in one direction or another to direct the surface water towards a suitable disposal point, which might be a gully, drainage channel, or the edge of the garden. Whenever possible, surface water is directed away from any buildings. The riven texture of many natural stone paving materials means that water can sit on the surface more easily than might be the case with some manufactured paving materials.

Base
All paved areas, whether they be used as driveways, paths or terraces, require a stable base. The depth/strength requirement of this base varies according to the planned use of the paved surface. For example, a private driveway will require a base layer of concrete at least 100mm thick, and this may need to be spread over a strengthening layer of compacted stone or hardcore, whilst a mortar bed approximately 50mm thick, laid directly onto firm ground could be sufficient for a lightly trafficked walkway. Every project site is different and a judgement will have to be made at the start of the project as to the long term stability of the existing ground. Please bear in mind that it is always best to err on the side of caution and lay a stronger base at the outset, than have to lift and reinstate a sunken area in the future. The base of any paving project is critical and do not try to scrimp on your hardcore, If you do it can cause you patio to sink.

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