"High build"

I've sand and cement render on my house. Some of it is shot, but most of it is still on very nicely. There are also quite a lot of small cracks.

I want to fix the cracks once and for all (or at least for a couple of decades). I was going to have the render taken off and a silicone render applied.

A local builder visited and suggested taking the render off will be a huge job (> 220m2) especially where the render is sound and we might damage the blockwork underneath. Instead he suggested...

"High build"