Direct Render Boards

Direct Render Boards are used as a substrate for a variety of thin coat polymeric renders, textured finishes and other surface coatings providing a seamless finish in all applications. Render Boards are characterized by high tensile strength that resists bending to prevent cracking and deformity, providing an excellent resistance to impact damage.

Vivalda direct render boards are class ‘O’ fire rating and are not affected by moisture and water penetration. The boards are easy and quick to install. The rough surface of these boards is suitable for direct application of a wide range of finish renders. This ease of application and finishing enables the reduction of on site working schedules, proving to be cost effective.

Renderflex

Renderflex is a cellulose/fibre cement building board, specifically designed as a carrier board for polymer modified render systems.

The board has been formulated to achieve a strong key between the polymer basecoat and the Renderflex, and is manufactured to achieve the minimum amount of movement in the board possible, reducing any stress being applied to the render system RCM Renderflex is manufactured from a mixture of specially treated cellulose fibres, Portland cement, sand and other additives.

Properties

Renderflex is resistant to the general effects of moisture, humidity changes, rot, insects, vermin, and has good fire related properties.

Renderflex can be cut, drilled, sanded and worked in a similar fashion to cement particle board, or other fibre cement boards. For extensive cutting the usage of an electroplated diamond  continuous rim cutting blade (EPC) diamond blade is recommended, however tungsten carbide tipped blades such as used on circular saws can be used for on-site cutting.

Renderflex is primarily designed to be used as an external carrier board for direct thin coat render system.

For more information please download the full brochure on General Purpose Boards from the 'Brochure Downloads' section.