How to put stucco on a block wall
This netting can be purchased in rolls at many home improvement stores. The process involves applying a layer of cement over the concrete block wall to cover grout. Coat the entire wall evenly.
A cinder block wall can be sufficiently covered using one scratch coat and a finish coat for a total stucco thickness of one-half inch. You can choose from a variety of patterns and finishes or you can create your own. Add color to stucco to match your house or to create any decorative color. Use a power sprayer attachment on a hose to wash the wall with detergent, and rinse it clean.
Take special care to remove any oil spots on the cinder blocks.
How to Put Decorative Stucco & Rocks on an Exterior Concrete Brick Wall
Let the wall dry thoroughly overnight. Use a paint brush or paint spray gun to apply an even coat of bonding agent to the entire wall. Pull out the wooden strips afterwards.
Wait for the stucco to partially dry. The surface should no longer be shiny, but the stucco should still be somewhat wet and workable. Rub a wood or foam mason's float over the entire surface in a swirling pattern. Afterwards, dampen the stucco regularly; it will be stronger if it dries slowly, over a course of 36 to 48 hours.
Mix another batch of stucco.
Apply it in the same method that you used for the initial coat. With this coat, you can use a colored or acrylic stucco if desired. There are a few options for this step.
You can mix small pebbles or gravel with wet stucco and fling them against the wall, making a rough, textured coating. After the curing period has passed, a finish coat can be applied.
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You can add powdered pigment to your mixture as desired as well. Then allow the coat to cure for another 36 to 48 hours, with periodic misting to keep the surface moist. The procedure for applying stucco to a wooden surface is somewhat different, beginning with nailing pound roofing felt over the structure.
After the roofing felt has been installed, it should be covered with gauge metal netting.
This netting can be purchased in rolls at many home improvement stores. The metal netting is applied by attaching it to the structure using galvanized roofing nails. After the netting is in place, the excess can be trimmed using tin snips. This will cause the mortar to exude through the netting, which will in turn help to "key" the coating into place.
The basic stucco recipe is 3 parts sand to 1 part Portland cement but for block walls, a little bit richer mix will help the mud to stick better. A rich mix is simply adding a little more Portland cement in the recipe. Lime would also help to make the mix a bit stickier and just a little bit will go a long way.
How To Scratch Coat A Cinder Block Wall, Just In Case
You can mix in a bucket, a wheelbarrow or a larger mortar mixer, it doesn't really matter which method you use. You can use a depth gauge to help determine that you are within that depth.
Add The Scratch Marks: