Keystone produces general purpose concrete masonry units (CMU’s) in three different aggregate blends.                          These products are Normal Weight Stone, Lightweight Keylite and Real-Lite CMUs to suit your building requirements.

Specifications Stone Keylite Real-Lite
Special Order
Sizes by 8″ High & 16″ Long 16″, 14″,12″, 10″, 8″,
6″, 4″, 3″, 2″
12″, 10″, 8″,
6″, 4″, 3″, 2″
16″, 12″, 10″. 8″
12″ x 8″ x 16″ Unit Weight 54 Lbs 44 lbs 42 lbs
ASTM Specification C90 Normal Weight C90 Lightweight C90 Lightweight
Minimum Net Compressive Strength 1900PSI 1900PSI 1900PSI

Block Basements Information

Stone CMUs
Are produced with sand, gravel and cement. These are used for all building applications.

Keylite CMUs
Are produced with a blend of locally produced lightweight aggregate, sand and cement.

Unit costs are similar to stone CMUs but because of their light weight they are less expensive to install.

Project Photos

Stone Foundation

Keylite Foundation

Real-Lite Foundation