Cover the lath with a scratch coat of mortar to.
Installing stone veneer over painted concrete block.
A scratch coat is a rough coat of mortar that provides a firm porous surface for the veneer to stick to.
Use a pre blended polymer fortified type s mortar and water known as svm stone veneer mortar.
Natural stone veneer over painted cinder block natural stone does not require mesh to adhere to another surface unlike the manufactured variety.
Slide inch thick wood shims under the veneer panels to hold them even with the level chalk line.
If you re using the mortar to hold on stone veneer the mortar should be scraped onto the back of the stone and then pressed into the scratch coat.
Spread inch of mortar onto the back of the stone veneer panel and press it to the wall.
If your substrate is cmu or concrete then you can sandblast it remove the residue and install stone veneer with a polymer modified mortar or thinset.
The mortar that squishes out over the stone will then form the mortar joint between that stone and the next stone.
Applying stone vaneer to painted concrete block a stone veneer would be full depth 3 5 inches which would not require any change to the block.
It is also recommended to work your way from the bottom to top.
Wipe the back of the panels with a wet cloth.
Tap the stone panels to the wall with a rubber mallet.
It is recommended to install all corner pieces first before installing the field.
At best you install a firm layer of cement board over the brick then install the veneer on the cement board.
Start installing the stone veneer at the wall corner.
At the least you will need to apply a wet scratch coat to the brick before you install the veneer.
Now the wall is ready for a layer of mortar that will adhere to the scratch coat.
Call an rcp block brick near you for available products and tips.
It requires a sound footing and a somewhat bondable surface as well as fasteners such as galvanized hot dip l shaped wall ties to bond the stone to the concrete.
If you are applying stone veneer to a painted or sealed concrete foundation attach a layer of metal lath to the concrete wall with masonry anchors.