Services & Whats New
We provide raised access floor supply, installation, existing raised floor alterations and remedial works such as Tanking, service cut outs, underfloor builders clean and fire/acoustic stopping.
We currently have some great prices available for supply and installation from our main raised access floor supplier.
Get in touch today to find out more...
Jrjflooring are now a Chas advanced approved raised access floor contractor !
Suppliers
Raised Access floor
A simple guide
Raised access floor or RAF systems provide an elevated structural platform above a concrete substrate, sub floor or timber floor to create a hidden void for the passage of mechanical and electrical services. Raised floors are commonly used in most modern office buildings, and in specialist areas such as server rooms and data centres often using vinyl anti static raised floor panels and where there is a requirement to route mechanical services, cables and electrical supply.
Raised access flooring can be installed at many different heights from 30mm to heights well above 1.0 metre, to suit services that can be accommodated under the raised floor. Extra structural support and task lighting are often provided when a floor is raised enough for a person to crawl or even walk beneath.
Traditionally this type of raised floor consists of a grid metal substructure of adjustable-height pedestals (legs) that provide the support for removable floor panels, typically panel sizes are 600x600mm and 900x600mm. The height of the legs/pedestals is dictated by threshold and finish requirements and by cables and other services being installed under the raised access floor, but typically most office raised floor heights range between 100-400mm.
Raised access floor panels are normally made of steel encapsulated particle board or a steel panel with a cementitious core and commonly used Knauff giffa board being an example, raised floor Panels can be covered with a wide range of finishes , such as carpet tiles, hardwood, laminates, ceramic tiles, marble/stone, vinyls and antistatic finishes usually for use in computer rooms and sterile environments..
Raised access flooring is commonplace in office accommodation, retail spaces, computer and control rooms. There are two bench-marks for performance testing in the United Kingdoom PSA MOand the more recent BS/EN12825. These set out defined static loading criteria for the raised access floor to meet. The maximum for raised access flooring for general office accommodation (PSA medium grade) is 8 kilonewtons per square metre (kN/m2) uniformly distributed load (UDL) and a 3.0 kN point load. There is an additional 3 x safety factor applied to the loadings. Computer and control rooms including data centers generally have a higher requirement with regards to static loadings and PSA heavy grade should be employed. This provides 12 kN/m2 UDL and a 4.5 kN point load.
Appropriate lifting tools should always be used when lifting raised floor to prevent injury and potential damages, and any alterations made to the rasied access floor system should only be made by trained and competent professionals.
