Breeze Block and Screen Units This is used in landscaping and hardscaping. These are decorative open-air concrete units. The most popular building block is also known as Breeze Blocks. The breeze was previously used as a synonym for ash or cinder in the UK; as a result, we frequently refer to them as "Breeze Blocks" here, but "Cinder Blocks" is more commonly used in the US. Breeze blocks reduce the effects of direct sunlight while also providing ventilation for outdoor patios and breezeways. In more recent years, your neighbor's backyard has also used them as a design accent!