What is the maximum height I can raise my decorative wall and/or retaining wall to?

The maximum height is determined by the product. Please consult the product page of the wall you are interested in!

The elevation of a retaining wall varies according to different criteria: the type of material used, the type of soil, the slope of the wall, the overload elements above the wall and many other factors. Depending on your project, you may need to confirm this with an engineer to ensure that your design is safe and compliant.