Lightweight Concrete Block

The Liteblok Grande, a larger version of the lightweight aerated Liteblok concrete block, is made for construction where there are no laterally supporting interior walls or where high insulation is needed. The dry-stacked interlocking blocks measure 8x8x16 in. and have an insulating performance equal to R-33. This environmentally friendly product is also resistant to termites, fire, mold, and rot, making it suitable for retails stores, warehouses, and residential buildings. Cresco Concrete Products. 866-491-6819.