Installing Stone Veneer Over Painted Concrete Block

Mix according to manufacturer s directions.

Installing stone veneer over painted concrete block.

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. At best you install a firm layer of cement board over the brick then install the veneer on the cement board. Now the wall is ready for a layer of mortar that will adhere to the scratch coat. Start installing the stone veneer at the wall corner.

Tap the stone panels to the wall with a rubber mallet. 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. A scratch coat is a rough coat of mortar that provides a firm porous surface for the veneer to stick to. If it s any other material you ll need to install a weather resistant barrier metal lath and a scratch coat before installing manufactured stone no need to sandblast if this is the case.

Wipe the back of the panels with a wet cloth. Spread inch of mortar onto the back of the stone veneer panel and press it to the wall. Cover the lath with a scratch coat of mortar to. Call an rcp block brick near you for available products and tips.

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. It is recommended to install all corner pieces first before installing the field. 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 your asking about cultured stone or some other lick and stick product then it is similar to stucco and you would probably be best to start with wire mesh and scratch coat that and then apply the stone.

The mortar that squishes out over the stone will then form the mortar joint between that stone and the next stone. Natural stone veneer over painted cinder block natural stone does not require mesh to adhere to another surface unlike the manufactured variety. At the least you will need to apply a wet scratch coat to the brick before you install the veneer. 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.