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Concrete Masonry Units

Split-Face Block

Split-face blocks provide an attractive alternate to standard precision blocks. Their rugged texture reveals the natural aggregates used in their manufacture to create a visually appealing finish for any project.

Split-face blocks are made by manufacturing two or more blocks joined together as one large unit. After a curing period, the units are put through a guillotine-like machine that utilizes blades to split the units apart and expose their interior aggregates. The amount of visible aggregates will vary from block to block and from run to run. Additionally, the aggregates used to manufacture these concrete masonry units are subject to natural color variations as they are mined from the earth. Because of these facts, it is important to order all split-face masonry units for a project at one time to ensure aggregate color-uniformity.

When specifying concrete masonry units, the dimensions are indicated in the following manner: width x height x length. Dimensions of split-face masonry units are usually expressed in terms of their nominal size, which is three-eighths of an inch greater than their actual size. This three-eighths of an inch difference accommodates the standard 3/8” mortar joint that is utilized when installing these units. For example, a unit with the nominal dimensions of 8” x 8” x 16” would have actual dimensions of 7-5/8” x 7-5/8” x 15-5/8”.

Applicable Standards and Quality Assurance

The split-face concrete masonry units manufactured by CastleLite Block comply with the requirements of ASTM-90 and section 21-4 of the Uniform Building Code. CastleLite Block maintains an inventory of lightweight split-face units. Medium weight and normal weight units are available as special order items. For more information regarding the ASTM standards pertaining to concrete masonry units, please examine the Specify Masonry section of this catalog contained under tab #2.

CastleLite Block, LLC participates in a testing program in which an independent laboratory randomly samples and tests our concrete masonry units.

Available Colors for Split-Face Block

CastleLite Block stocks lightweight split-face units in natural grey. Our lightweight Tan color is a special order. A wide variety of custom colors may be special ordered. Please contact a CastleLite Block representative for more information regarding custom colors.

The raw materials utilized in the manufacture of concrete masonry units are subject to natural variations in color which affect the color of the finished product. It is important that our customers understand that color can be guaranteed only to a range of color. Even natural grey units, which are manufactured without pigments, may have noticeable shade variations from run to run.

Available Sizes of Split-Face Block

CastleLite Block maintains an inventory of 8 x 8 x 16 and 12 x 8 x 16 split-face units. Other sizes can be manufactured on a special-order basis.

Many of the available shapes and sizes of split-face block are shown below. CastleLite Block is constantly adding new items to its product line which may not be included in these drawings. Please call our office at 707-678-3465 if you have any questions regarding additional shapes or sizes.

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