Concrete Block Stucco Wall System

Stucco needs to be applied to a sturdy stable surface in order to ensure that it doesn t crack or crumble.

Concrete block stucco wall system.

Surface bonding cement is a fiberglass reinforced portland based mix that is used for the construction of dry stack block walls. Concrete masonry surfaces are both absorbent and textured two things necessary for bond. Generally concrete blocks measure 16 inches long by 8 inches wide by 8. Concrete blocks can be solid or hollow with two or three cores or voids.

So that s a synthetic stucco blend and it goes very easily right onto the surface of the actual block. For one coat stucco systems apply quikrete one coat fiberglass reinforced stucco in a single application at inch thick. Step 10 screed the stucco to a uniform depth of 3 8 inch using a straight edge. If you apply stucco to a wooden surface you must first install a metal netting to hold the stucco but it can be applied directly onto a concrete surface.

Stucco is a durable finishing surface that can beautify any exterior surface. Clean debris off the wall with water and a sprayer. Spray away most debris with water from a garden hose. Traditional stucco is ideal for concrete wall systems the durability and versatility of traditional portland cement stucco provide a great finish for other concrete building systems including concrete panels insulating concrete forms icfs and autoclaved aerated concrete.

Color can be added to the mix to enhance the look of the project. The blocks also come in a range of standard shapes. Work from the bottom of the wall up and apply at a thickness of about 3 8 inch over the entire area. Astm standard c 926 specification for application of portland cement based plaster permits direct application of stucco to solid surfaces like concrete and masonry as long as bond is sufficient.

Typically what s done is your block is going to be rasped down and i ve got a piece of sandpaper here which allows me to basically rough up this surface. Also try mixing 1 cup 240 ml of a mild dish soap into about 5 us gal 19 000 ml of hot water to scrub off tough stains with a concrete brush. Remove as much debris as possible from the wall so the concrete bonds cleanly to it. It can also be used as a decorative finished to existing concrete and masonry walls.