The Flexi-Level joist support system is ideal for levelling uneven floors and for roof decking installations.  Based on the original Rubbertech (later Ryno) product this cradle has been engineered with a number of new and improved capabilities.  The Flexi-Level cradle is designed to carry higher loads with easy, precise adjustment to enable perfect levelling of the floor or deck.

The Flexi-Level cradle has the huge advantage of being height extendable by means of simple clip-in extensions that fit into the base of the cradle. A, clip-in, moulded acoustic base pad is supplied as standard with every cradle, providing cushioning and protection when used on top of membranes – it incorporates water drainage channels. Flexi-Level cradles are ideal for supporting timber joists for internal floors as well as for use on balconies and roof spaces.
 
Made from recycled polypropylene, the cradles are designed to provide separation between the wood joists and the substrate beneath and all compartments are provided with drainage holes to prevent any build up of water.

The adjustable cradles provide a fast and easy solution for levelling and supporting joists for internal flooring and decking on balconies, roof terraces and on any other firm surface. They are designed for use with standard 2" (44 to 48mm) wide joists, keeping them above the roof deck or base substrate and, importantly for exterior applications, above the drainage level of the roof or base.
 
The clip-in moulded base pad helps to spread and soften the impact of the imposed load. This also has acoustic properties and helps to reduce transmitted noise. The support cradles are simple to install and adjust to allow for falls and irregularities.
 
The support cradle is also designed for use on uneven and out of level floors. The unique design enables the soft sprung feel of a timber floor to be achieved over concrete sub bases. The cradle allows for fast installation by removing the need for leveling screeds and the slow drying times normally associated with cement based products.
 
The void created by the support cradles can provide useful space for insulation and can also be used for service runs of electrics, piping, etc.  The system is ideal for use in fast track building programs or conservatory floors.
 
This product is also useful for levelling garden sheds with 2" or smaller support beams underneath. An additional advantage is that the shed base is raised above the ground level thus improving ventilation and helping to prevent damp and wood rot.
 
Installation
We suggest a minimum distribution of 6 to 8 supports per square meter, with joists spaced at 400mm (16") centres and cradles positioned at 400mm to 500mm (16" to 20") intervals along each joist. Smaller cross section joists and beams are more liable to flex, so typically these require that the cradles are placed closer together. Where high loads are anticipated the weight bearing capacity can be increased by placing the cradle supports closer together. When installing heavy, pre-built, joist frameworks, take care not to overload any single point of support during initial levelling. This can be avoided by using support wedges or jacks to reduce the weight at corners until the required distribution of cradle supports are in place and adjusted.