Fixing To... Hollow Concrete Block
Hollow concrete blocks are what it says on the tin – blocks made of concrete with (you guessed it) hollow spaces inside them.
They are popular in construction as they are cost-effective, durable and energy-efficient thanks to the insulating properties of the air pockets in their core – these also help with soundproofing! They are also generally weather- and fire-resistant and their rough surface bonds well to all wet applied materials such as mortar and render. As they are very strong, using them in internal walls means the wall doesn’t have to be as thick – so more floorspace! And thanks to their relative light weight, they’re often used in homes in earthquake-prone areas.
Hollow concrete blocks are generally made of the same material as poured concrete which means water, aggregate, sand and Portland cement, but fly ash is sometimes used to make them even lighter (cinder blocks). As they are pre-cast, they provide consistent finish and accuracy, which means they are ideal for load-bearing structures and partition walls.