Revised 2020
Note: This guide specification for the U.S. is for the installation of concrete tile paving units generally 3/4 to 2 in. (20 to 50 mm) thick. These thicknesses are less than the minimum 2 3/8 in. (60 mm) required for conformance to ASTM C936. Regardless of thickness differences, the manufacturing process is very similar to that used to make 2 3/8 in. (60 mm) thick pavers meeting ASTM C936.
There are two installation methods, one with bedding sand and another with none. Both methods are applied over a concrete or cement-stabilized aggregate base. This method of construction is for new or rehabilitative overlay on concrete pool decks, other decks, patios, walks, balconies and roofs. These two installation methods are described in this guide specification and are intended for pedestrian use only.
Construction on a concrete base requires securing edge pavers with an acrylic-fortified mortar bed (thin-set mortar) or a polymer adhesive. A smooth concrete base can allow pavers placed directly on concrete. Fine sand is spread and washed into the joints until full. This method typically moves some sand under the pavers to reduce or eliminate rocking. Most applications are sealed as a means to secure sand in the joints.
Other installations use a thin layer of screeded bedding sand typically ½ to ¾ in. thick. This is screeded within the fastened edge pavers. After placing pavers on the sand, they may be proof rolled with a water-filled roller to imbed them into the bedding sand. The joints are filled with sand. Both installation methods may use polymeric joint sand stabilizer. Adjustments in elevations any surface drain inlets are necessary to facilitate drainage of water from the new, elevated paver surface.
This Section includes the term “Architect.” Edit this term as necessary to identify the design professional in the General Conditions of the Contract. The text must be edited by a qualified, licensed design professional to suit specific project requirements. CMHA makes no representations or warranties of any kind, expressed or implied, and disclaims any liability for damages resulting in the use of this guide construction specification.