Decorative stucco, is a mixture of sand, cement, lime and water applied over an extruding steel mesh fixed to an exterior wall or directly onto any concrete or rough masonry surface. Stucco can be coloured and therefore combines well with other types of exterior cladding. It is extremely malleable when applied, which means you can create the precise texture or motifs you are looking for. Apply stucco to the concrete foundation of your home as well to the facade.
TOOLS AND MATERIALS REQUIRED
- Plastic container
- Drill and Agitator
- Finishing trowel
- Notched trowel
- Steel trowel
- Bags of stucco
- Colour pigments, compatible with stucco
Store the product in a cool and dry place. Do not place directly on the floor. Do not use a product damaged by water, humidity or with hard lumps in it.
A 22.7 kg bag will cover approximately 40 sq. ft. (1/8″ thick).
The ambient temperature of the surfaces and of the product should run between 5 °C and 35 °C during application and for an additional 72 hours following the work. The product is usable for more or less two hours. Do not add water to make it more flexible.
It is possible to colour the parge/stucco with a compatible product.
1 PREPARE THE SURFACE1PREPARE THE SURFACE
1.1. Clean the surface to be covered. This surface must be solid, clean and rid of any particles that could hamper the stucco adhesion such as grease, dust, oil, paint or other.
1.2. Thoroughly moisten the surface to be covered 12 to 24 hours before the beginning.
1.3. Dampen the surface (without creating any accumulation) before applying stucco.
2 PREPARE THE MIX
2.1. Pour 4 to 4.5 L of water per bag of 22.7 kg into a clean container.
2.2. Gradually add dry ingredients of the bag by mixing with a drill equipped with an agitator of the same type as the paint mixers.
2.3. Mix for about three minutes while scraping the sides of the container and making sure you obtain a homogeneous result. If the mix is too thick, gradually add a bit of water, being careful not to make it too thin.
3.1. Stucco needs two coats. The two coats combined must total a minimal thickness of ¾”. Apply the first coat with a steel trowel. Tamp well.
3.2. Then go over with a notched trowel so as to obtain a rough surface, which increases adhesion for the second coat.
3.3. Wait until the first coat is dry, approximately 24 hours.
3.4. Dampen the first coat.
3.5. Apply the second coat with a finishing trowel, a brush, a paintbrush or a sponge depending on the expected finish.
4 DAMPEN THE SURFACE OFTEN
Once the stucco is dry, dampen the surface often, over three days, following the application.