Hi, I'm looking into next year building an outdoor kichen area and one end of my patio, now my proposal as it stands is to replace a section of the fence coming away from my garage with a rendered wall. My question is - if i was going single skim breezeblock for the wall, is there any specific height that I couldn't go above? An example of what I'm proposing is like the image attached, although I wouldn't have the timber structure above, just a rendered wall.
I know that is the height for planning permission, but has my current height of fence is 8ft, I'm allowed to go that high again (checked with planning). My question is a technical limit, what is the technical limit for a breeze block wall? If I go 8ft will it just topple over in the wind?