How to Install Granite


Granite Installation Process

The Installation of granite requires a competent, experienced Stone Setter, and the use of accurate shop drawings.  For the installation of our Granite slabs we develop a custom template with our laser computer program that allows the customer to view the stone of their choice in a mockup of their actual job site.  Read more about this process here.

Adequate shop drawings must be prepared before the fabrication and installation process.  These drawings should provide the general layout, jointing, anchoring, stone thickness, and other relevant information. Anchoring, bonding, jointing, and other details should also be included along with the dimensions of each granite unit.  The contractor, client and fabricator should all have this information provided and approved.  All granite pieces are identified with a unique piece number corresponding with the number on the shop drawings. All numbered pieces are not interchangeable.

stone fabrication equipment

Stone Condition & Temperature

Our in-stock slabs are kept inside our warehouse in Denver, so we do not run into issues of ice or frost accumulating on our slabs like some other stone shops around town that keep their inventory outdoors.  It is important to ensure the Granite does not have any ice or frost present prior to installation as this can hinder the process.  But, avoid the use of salt for the purpose of melting ice, frost, or snow on the granite pieces.

Mortar of Setting Granite

Adequate protection measures should be taken to ensure that exposed surfaces of the stone are to be kept free of mortar at all times. Clean base materials to remove dirt or other foreign matter. Saturate concrete substrate several hours prior to setting granite. Wet the stones thoroughly prior to setting in the mortar bed. Apply neat cement parge of approximately 1/16″ thickness to granite units prior to placing on mortar bed. Pack stones into place using a rubber or plastic mallet to obtain full contact with the setting bed and proper stone unit alignment. Mortar joints are raked out to a depth of ½” to ¾”. Apply pointing mortar in layers and they should not exceeding 3/8″. After these steps, allow each layer to dry. When dry, the layer should be hard before the next layer is applied. Tool finished joints with a concave tool having a diameter of approximately 1/8″ greater than the joint width. Care needs to be taken to keep expansion joints free of mortar, which would compromise their function.

Sealant of Joints

Joints requiring sealant are first filled with a closed-cell ethafoam rope backer rod. The backer rod is then installed to a depth that provides an optimum sealant profile after tooling. If recommended by the Sealant Manufacturer, primers should be applied to the substrate surfaces according to the manufacturer’s directions prior to application of the joint sealant.

Weep Tubes

All sealants are tooled to ensure maximum adhesion to the contact surfaces. Plastic or other weep tubes need to be placed in joints where moisture may accumulate within the wall, such as at the base of the cavity, continuous angles, flashing, etc., or as shown on architectural drawings.

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