Renderpro has been designed as a construction board to be used on timber & steel frame applications. It has been tested and approved for use by many of the major render manufacturers & suppliers in the UK and offers the user a quick, clean and cost effective solution to many applications. Alongside its render carrying properties, it can be used as a fire board, a high impact sheeting board, a racking board, a soffit board and for a variety of other construction based uses. Renderpro is not currently approved by the NHBC for use on an NHBC Registered site (Jan 2019) although discussions are ongoing between the NHBC and the manufacturer to address this.
Renderpro has a BDA Agrement Certificate, BBA Third Party Testing and is LABC Assured. It has been approved for use as a suitable board by many render manufacturers including K-Rend, Scotrend and JUB.
Renderpro is easy to handle, weighing in at about 35kg’s for a 12mm sheet, which is about 20kg’s less than many other board options. It can be scored, snapped and cut with a knife, or cut with a rip saw. It should be fixed with a stainless steel screw, although we can offer automated fixing options for a factory fit situation if required.
There are full render specifications available from a number of render manufacturers for synthetic and mineral renders applied to the Renderpro board.
The board should be fitted with the coarse face out to receive the render and a 3-4mm gap left between each board. Screws should placed at 200mm centres (35 screws per board) and the fixing battens should be a minimum of 63mm wide allowing for board joints and for the fixing to ensure a suitable “bite” on the batten. The boards should be kept dry before and after fitting and the render should be applied as soon as possible after fitting. Brush down the face of the board before applying the render to ensure any dust is removed and a comprehensive bond is achieved.
The board joints should be staggered as with all good building practice and compression, movement and party wall joints should be designed prior to the fitting of the board.
All board joints should be filled with a joint filler that is specified by the render manufacturer.
The board should then be fully coated with a the specified base coat with the inclusion of (minimum) 160gm high quality alkali resistant scrim cloth to the required thickness and brushed before the application of the render top coat.
An insect mesh should be fixed back to the frame closure board and wrapped round the board fixing battens prior to the fitting of the Renderpro boards.
An aluminium ventilated base profile can also be used at the base of the system as an alternative. This will give some additional support and protection to the base of the board
Render beads should be fixed with an adhesive prior to the application of the scrim coat.
Additional ventilation can be included with the use of Drill Vents, and these can be placed to solve the issue of scaffold tie exit/entry holes.
A VFB (Ventilated Fire Barrier) should also be considered when designing the façade to ensure it will meet with current building regulations.
Click here for Renderpro Technical Data Sheet
Click here for Renderpro COSHH Sheet
