Frequently Asked Questions

Frequently Asked Questions2016-10-17T08:44:42-07:00

If you own a stucco home you are aware of the low-maintenance, sound-insulating benefits of this beautiful exterior material. If you don’t, then here are some frequently asked questions that can cover the basics. Most importantly on every page of this website is our telephone number. We are here to answer any of your questions – none are too simple or complicated – so call us and have a conversation with Blaine or Darren. Better yet, call and make an appointment and let us see your home or commercial project so we can answer your specific questions intelligently.

Please do not hesitate to contact us if your question is not listed below. We strive to fully inform our customers, and encourage you to contact us to learn more about your stucco project and how to protect your home or commercial building.

What is the difference between Acrylic Finishes and Portland cement based Stucco Color coat?2016-10-17T08:44:42-07:00
Acrylic finishes utilize paint technology with aggregates added that can be trowel or spray applied with the appropriate equipment. Acrylic finishes can be applied over portland cement base substrates and EIF Systems using an approved grade.
Stucco Color Coat is a natural cement-based material; acrylic finish is a synthetic man-made coating. Stucco cures to a hardened state while acrylics dry to a hardened state.
Acrylics dry from the outside in and can be sensitive to environmental conditions. Air circulation is as important for drying as the temperature, especially in humid conditions. Cement stucco finish “cures” as opposed to drying.
For acrylics or cement finish, the portland cement plaster base coat must be cured before applying the finish, but a longer cure time is beneficial. It gives the building additional time to “find itself” or settle before the finish coat is applied.
Based on the type of acrylic finish and the texture of the existing surface, a skim coat of Stucco Level Coat may be required, a color matched acrylic primer may be recommended or in some cases color coordinated acrylic primer may be required.
What’s the difference between Fog Coat, Allegro II Cement Coating and Paint?2016-10-17T08:44:42-07:00

Fog Coat may be applied to blend the color of textured Stucco Color Coat finishes or revitalize older stucco finish with the same color. It is a portland cement base product that can be recoated with stucco color coat in the future. Fog Coat may be applied to stucco finish as soon as the finish has dried. The color level may be adjusted darker in the field as necessary to more closely match the existing color, by adding a small amount of additional pigment from a color pack of the same color.
Allegro II Cement Coating is neither Fog Coat nor Paint, Allegro is something between the two and is the product designed to change or in some cases provide surface color, it also can be recoated with stucco color coat in the future.
Allegro II Cement Coating is a cost-effective, durable and long-lasting colored coating that can be applied to portland cement surfaces such as: stucco (including smooth Santa Barbara Mission Finish), Concrete block/Concrete masonry unit (CMU) and Precast concrete.
Paint is a coating used to cover many surfaces including stucco in some cases. Proper preparation and pH levels are key to the success when painting a stucco wall. Paint may be applied 28-days after the stucco has been applied. If this is not the case, the pH level and preparation recommendations of the paint supplier should be followed.

What are the components of the One-Coat System?2016-10-17T08:44:42-07:00

The components of a one-coat system always include a weather resistive membrane, metal reinforcement and the fiber reinforced or one-coat stucco.  The product may be installed over a wide variety of substrates including foam plastic insulation board, exterior gypsum sheathing, oriented strand board (OSB), exterior plywood, asphalt impersonated sheathing and almost any other code approved exterior sheathing.  A substrate is always required; it is not designed for installation over open framing.  It may also be applied to concrete and concrete masonry units with or without metal reinforcement.

What is synthetic stucco?2016-10-17T08:44:42-07:00
Unlike traditional stucco, which is non-insulating and typically comprised of Portland Cement, sand, and water, synthetic stucco is really not stucco at all. Synthetic stucco generally refers to a type of Exterior Insulation Finishing System (EIFS), an insulating wall coating that may consist of more than one synthetic layer and foam insulation.
It is often used as a façade on a building’s exterior walls in place of cement stucco because it may be more quickly and easily applied. One example is known as one-coat stucco, a synthetic stucco applied as one coat or layer, where traditional stucco is usually applied in three layers. This may suit a wide range of function and design for both structural and decorative needs.
The installation of this EIFS may be an on-site renovation overseen by stucco professionals, or the synthetic stucco may be pre-fabricated into panels and then shipped to the installation site. With the use of adhesives, the stucco is then applied to what is known as the substrate. Common substrates may include new or existing concrete, cinder block, brick, plywood, and other common building materials. It may also be applied to paper or wire mesh over a wood frame or other material for use on various interior and exterior projects.
Are plaster, stucco, and EIFS the same thing?2016-10-17T08:44:42-07:00

Plaster is the general term for material that is applied to a wall surface in a thin layer. Portland cement-based plaster is such a material that uses portland cement as the binder. It is sometimes called “traditional stucco.” Stucco is a somewhat colloquial term for portland cement plaster, and some people consider it to refer to an exterior, not interior, finish. Exterior insulation and finish system is sometimes (incorrectly) called “synthetic” stucco. To complicate matters, “plastering” is the verb that describes the action of applying any of these various materials to a wall surface.

Portland cement plaster is applied either by hand or machine to exterior and interior wall surfaces in two or three coats. It may be applied directly to a solid base such as masonry or concrete walls, or it can be applied to metal lath attached to frame construction, solid masonry, or concrete construction. Applied directly to concrete masonry, portland cement plaster provides a tough ½-inch thick facing that is integrally bonded to the masonry substrate. When applied to metal lath, three coats of plaster form a 7/8-inch total thickness. A vapor permeable, water-resistant building paper separates the plaster and lath from water-sensitive sheathing or framing. Portland cement plaster has high impact resistance and sheds water, but breathes, allowing water vapor to escape. It’s a proven system that works in all climates.

Exterior insulation finishing systems (EIFS) consist of a polymer-based laminate that is wet applied, usually in two coats, to rigid insulation board that is fastened to the wall with adhesive, mechanical fasteners, or both. Polymer based (PB) systems, sometimes known as thin coat, soft coat, or flexible finishes, are the most common. The basecoat for polymer based systems is usually 1/16-inch thick and finish coat thickness is typically no thicker than the maximum sand particle size in the finish coat.

Clearly, traditional stucco should not be confused with the exterior insulation and finish systems. The systems may share similarities in application techniques or final appearance, but the systems perform differently in resisting weather, especially wet conditions. Consult with the professionals at Nurse Stucco for the best choices for your project.

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