Cement particle boards or render boards are normally fitted on timber frame builds and then the rendering is normally carried out over the board. However there are a number of problems that could arise with cement particle boards if not fitted properly or if the incorrect render system is applied over it.
Most render manufactures state that their product can be applied over cement particle boards...
In many occasions we have been asked by clients to render over existing render, one of the obvious benefits of doing this would be that the cost of removing the existing render is eliminated. However there are a few things to consider before you choose to follow through with this option as making the wrong decision can be very costly and stressful.
The first thing to look at is the render and if it is painted?...
Top coat rendering application is a light render system normally applied over insulation or cementitious boards. This type of system should have a total thickness of 8mm-10mm.
The standard application process is the following (please note that it may vary based on the product used);
- The base coat consists of 6mm-8mm with full fibre glass reinforcement mesh
- Top Coat 1mm-2mm