How to Install Quartz

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We outlined some of the steps below that will walk you through how to install quartz for a countertop or other purpose.  If you are not looking for a DIY project, let us do your countertop install, we have trained professionals and high-tech equipment to get the job done quickly and accurately.  Get information here.

How to Install Quartz:

Installation should be performed by a competent, experienced stone setter, and in accordance with the stone template or shop drawings.  If you are installing tile, all Quartz stone pieces should be identified with a unique piece number corresponding with the number on the shop drawings. Interchanging of numbered pieces is not advised. Quartz-based stone should be free of any ice or frost at time of installation to avoid complications.  Do not use salt to melt ice or frost on the stone as this will break down and ruin the stone.  All exposed surfaces should be covered and kept free of debris such as excess mortar or other installation materials.

mortar for quartz

Mortar Setting of Quartz:

Unless otherwise shown on approved shop drawings, each piece should be carefully laid in a full bed of mortar and tapped to a full and solid bearing. As previosuly mentioned, exposed surfaces should be kept free of mortar at all times.

If the thin-set method is used (for 5/8″ thick stone) a dry-set portland cement mortar is applied with a 3/8″ or ½” notched trowel with back buttering of the clean, moist tile surface. Apply mortar with the flat side of trowel over an area that can be covered with tile while the mortar remains plastic. Within ten minutes and using a notched trowel comb the mortar to obtain an even-setting bed without scraping backing material. Cover surface completely with sufficient mortar with a minimum thickness of 3/32″ between tile and backing after tile has been packed into place.

Tile should not be applied to skinned-over mortar. The average contact area should not be less than 80% except on exterior or shower installations, where the contact area should be at least 95%, when no less than three tiles are removed for inspection. Veneer should be set by spotting with gypsum molding plaster for interior use, cement mortar,  and the use of concealed anchors secured in the wall backing. When installing thin wall tile (nominal 5/8″ thick) use non-staining adhesives or dry-set mortars. Individually set thin tile (nominal 3/8″ thick) on vertical surfaces. However, exceeding 8′ is not recommended. Panels set in metal frames shall have rabbeted edges and a sealant for all joints to prevent moisture seepage. To make Quartz- based stone easily adaptable as facings for precast units and systems, use hairpin spring anchors in the back of the panels.

Mortar Joints for Quartz Installation:

Mortar joints should be raked out to a depth of ½” to ¾”. Apply pointing mortar in layers that do not exceed 3/8″ and allow each layer to harden before applying the next layer. Tool finished joints with a concave tool having a diameter approximately 1/8″ greater than the joint width. Make sure to keep expansion joints free of mortar, which would compromise their function.

images of stone achorage

Anchorage for Quartz Installation:

The stone should be anchored or doweled in accordance with the approved shop drawings. To the furthest extent possible, all anchor preparations in the Quartz-based stone units should be shop-applied. Ensure that any holes capable of retaining water are filled after use to prevent water collection and freezing. Sealant JointsJoints that require sealant should be filled first with a closed-cell ethafoam rope backer rod. The backer rod should be  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. Caulking Where so specified, joints should be pointed with the proper sealant discussed above, after installing the backup material and applying a primer if required. All sealants should be tooled to ensure maximum adhesion to the contact surfaces.

Weep Tubes for Quartz Installation:

Plastic or other weep tubes should be placed in joints where moisture may accumulate within the wall, such as at base of cavity, continuous angles, flashing, etc., or as shown on architectural drawings.

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