How to Replace Natural Stone Veneer from Exterior Walls

What You'll Need
Natural stone veneer
Masonry saw
Masonry saw blade
Drop cloth or plastic sheets
Safety goggles
Carpenters level
Dust mask
Angle grinder
Sledge hammer
Square-mouth shovel
Metal lath

Directly applied stone veneer is the best substitute to use for natural stone veneer as it is cheaper to ship and also easier to install. Stone veneer siding is an attractive siding, but even so this siding must be replaced because of aging, normal wear or to make a newer design.

Step 1: Preparing to Curtail Dust

Close all door and windows to avoid dust getting inside. When you want to remove the exterior siding, there will be lot of dust and debris created.


Step 2: Mark the Siding Boundary Lines

Mark the boundary lines of the portion to be replaced, if you intend to change only a part of siding. You can cut among these lines to fix the stone veneer in the particular portions.


Step 3: Cut through the Boundary Lines

Saw along the drawn boundary lines with a circular saw. Wear safety goggles. Do not cut through those surfaces for fixing the sidings.


Step 4: Removing the Veneer to be Replaced

Remove the stone veneer inside the area marked for removal. Begin from a top corner and move downwards and across the marked area. Remove all stone veneer with the blade of a chisel under the stone veneer by prying outward. Break the corner piece and remove it with smaller chisel. After the corner piece is taken off, you can use a bigger chisel to pry.

Step 5: Complete Removal

Once the veneer is removed from the specified portions, the surface will have some bits and debris sticking to it, which needs to be cleaned off. Use an angle grinder and remove these pieces to make the surface level and clean.

Step 6: Cleaning Up

Clean all the debris and dust from the area so that you can work to replace the veneer.

Step 7: Applying the Metal Lath       

Staple the metal lath to the wall frame according to manufacturer’s recommendations


Step 8: Applying Mortar Layer

Apply a thick layer of mortar about 1/2-inch to 3/4-inch thick on the metal lath to be covered.


Step 9: Wetting the Back of Stones

Make the backside of the stone damp with water. Paste about a 1/2 to 3/4 inch thick layer of mortar over the back of the stone so that it covers it completely.


Step 10: Installing the Stone

Press the stone into its position on the wall. Maintain the width of mortar joint around 1/2 inches to 3/4 inches or equal to that done earlier. Fix the other stones also in the same manner. Follow the pattern of the existing wall or one planned by you. Maintain the level of the stones.


Step 11: Filling the Joints and Gaps

After all the stones have been fixed, fill the mortar in between all the joints.


Step 12: Allowing Setting

Allow the mortar to set completely so that the stones are cemented properly in their place.