Stones & Bricks Installation

Installation must meet National Building Code requirements. Carefully read entire installation guide before proceeding with your stone application. Observe applicable safety precautions.

Estimating stone required

  • Determine gross surface area to be covered by measuring the length times the height.
  • Determine square footage for windows, doors, and other openings.
  • Calculate surface area covered by corner pieces by multiplying measured length by 0.75 (one linear foot of corner pieces covers approximately 0.75 of a square foot of flat area).
  • Determine net surface area to be covered by subtracting square footage for openings and surface area covered by corner pieces from gross surface area.

Surface preparation(Interior / Exterior)

Exterior installation

Concrete, masonry, stucco
If your surface is clean and untreated, no preparation needed. Examine newly poured concrete closely to ensure that its finished surface contains no release agents (form oil). If it does contain form oil, etch surface with muriatic acid, rinse thoroughly and score with a wire brush . Sandblast or waterblast to original surface (remove sandblasting dust by washing).

Décaper la surface à la sableuse ou par eau sous pression (enlever la poussière de décapage en lavant) ou attacher le treillis métallique de manière solide. Appliquer une couche de mortier de base à surface rayée (1/2” à 3/4” d’épaisseur) et laisser sécher 24 heures (figure b)

Interior installation

Rigid Backwall: Wallboard, Plywood, Wall Sheathing, Gyprock, Concrete Board, Any other acceptable rigid backwall.

Planning of stone work

Before you begin, lay out a quantity of stone (we suggest 20 square feet) near the work area to give you a wide selection of stones to choose from; try to achieve a balanced pattern of shapes, sizes, color and textures by mixing various stones.

Mortar

You may use Polymer Modified thin-set Mortar to apply stone to wall surface, and then finish joints with Premixed Type N mortar.
Mortar can be tinted to complement the color of the stone being installed.
Applying Mortar to Prepared Surface Area
Apply mortar 1/2" to 3/4" thick to prepared surface area. Do not spread more than a workable area 5 - 10 sq. ft., so that mortar will not “set up” before stone is applied.

Stone installation

Joints
There are two types of installations: with joints and jointless or dry-stacked. Grouted joints are considered to be a standard installation for bricks and stones. There are some stones such as Artek Stone Ledgestones which for aesthetic reasons are installed without joints (dry-stacked installation).

There are two types of installations: with joints and jointless or dry-stacked. Grouted joints are considered to be a standard installation for bricks and stones. There are some stones such as Artek Stone Ledgestones which for aesthetic reasons are installed without joints (dry-stacked installation).

Setting the stones

To set the stone apply a ½'' thick layer of mortar to the entire back of the stone, using a mason's trowel. Press the stone firmly into place on the prepared wall surface, squeezing the mortar out around all edges. A gentle wiggling action while pressing the stone will ensure a good bond.

With jointless jobs it's important (when setting the stone) that the edges of the stone are properly sealed with mortar to ensure a good bond. Make sure that edges are hermetically sealed.

Accidental smears should be removed using a whisk broom only after mortar has become crumbly but has not completely set.

Install corner pieces first. Notice that the corner pieces have a long and a short leg. Alternate these in opposite directions. After that, flat pieces are applied working toward the wall center.

The stones can be cut or shaped using appropriate tool according to type of stone and desired cut. Position large pieces first, then trim and fit small pieces into any remaining voids. To conceal cut or broken edges, cover them with mortar when grouting.

Grouting and finishing joints

If additional mortar is required, use a grout bag to fill in joints. Be careful to avoid smearing mortar on surface of stone. Never use a wet brush or wire brush.

When the mortar joints have become firm or thumb-print dry, they should be pointed up with a wood stick or metal jointing tool. Rake out excess mortar, compact and seal edges around stones. Careful attention to proper and even jointing will result in a professional looking finish.