The porous, cellular nature of pumice makes it lightweight and gives it good insulating ability. Mine Pumice from CR Minerals is widely used in the construction industry, in applications ranging from lightweight structural concrete to insulating concrete to concrete block and masonry products. CR Minerals pumice is also used in architectural stone veneer, plaster aggregate, and loose fill insulations.

Pumice reduces the weight of concrete blocks by more than 20% without decreasing compressive strength, thus making handling easier, minimizing the bulk of foundations or supporting columns in multi-story buildings, and reducing the reinforcement required in suspended floors. The high insulation value of pumice reduces the bulk required to meet thermal and acoustic standards. In addition, pumice is fireproof and resists condensation, mildew, and vermin.

The lightweight and insulating properties of CR Minerals pumice make it an ideal choice replacing silica sand in Exterior Insulation and Finishing Systems (EIFS). Synthetic stucco is gaining wider acceptance in Green Building applications.

Pumice has a significantly lower carbon footprint that some other lightweight aggregates, such as expanded shale, which are commonly used in concrete and occasionally in architectural stone veneer.

Pumice may also be added to Portland cement as a pozzolanic material.