What system would be 100% bombproof for application over rock face blocks. The problem is the rock face blocks are part of a massive retaining wall and they are slowly crumbling away. I suspect the water and frost is making them crumble. The owner has tried to repair it with cement last year and paint it and it has gone again. The work he did last year has fallen back out.
Would a render only system with mesh be the answer what could happen if these bits of block continued to crumble. They may crumble away but would not be able to drop anywhere because they would be sandwiched in.
Or
Fix timber to the wall and Calcium board it and render
or
Even insulation with fixings
advice please
Would a render only system with mesh be the answer what could happen if these bits of block continued to crumble. They may crumble away but would not be able to drop anywhere because they would be sandwiched in.
Or
Fix timber to the wall and Calcium board it and render
or
Even insulation with fixings
advice please