What Kind Of Outside Board Is Utilized For Stuccoing?

Stucco is a popular exterior home finishing plaster coat, known for its durability and versatility. It is typically installed over a layer of mesh around the house, with a synthetic version called Exterior Insulation and Finish Systems (EIFS) being a multi-layered system that uses a foam insulation board, a water-resistant base coat, and a water-resistant finish. Stucco is applied in three layers over a lath base to achieve a solid, even, and seamless home exterior. Before applying the stucco, cement board is cut to fit and attached to the walls with screws. Trim pieces around doors and windows are cut from foam blocks with fiberglass mesh embedded in the stucco to give added protection.

Exterior Insulation Finish Systems is an insulation board coated with an acrylic finish, offering continuous insulation, increasing the R-value and overall energy efficiency of your home. Stucco siding has pros, cons, costs, and maintenance requirements associated with it. PermaBASE Building Products are the industry-preferred choice for exterior cement board stucco applications, which are installed with adhesive or mechanically fastened to the substrate, usually plywood, oriented strandboard, or exterior-type gypsum board.

A high-impact resistant water-managed wall system incorporating a cement-board core, reinforced base coat, and 100 acrylic polymer exterior finish is available. HomeRAB™ Pre-Cladding substrate sheet can be used as a rigid backing board for the application of stucco plasters. Traditional stucco is installed directly to the substrate with a base lath attachment, while EIFS stucco is applied in multiple layers over exterior surfaces. One-coat stucco is a proprietary blend of cements and fibers, typically applied over a rigid foam board and lath to provide an Energy Code required.

Unlike traditional stucco, Nichiha stucco board panels arrive ready to go without the need to prime or paint, and are built to maintain their color consistency.

Can you use cement board for stucco?

PermaBASE® Building Products are the industry-preferred exterior cement board stucco application due to their exceptional performance, efficient installation, moisture and mold resistance, UL GREENGUARD GOLD certification, and EdgeTech® Reinforced Edge technology. These attributes contribute to the lightweight, easy-to-work-with, and moisture- and mold-resistant nature of the product.

What type of foam board is used for stucco?

InsulFoam Tongue and Groove (T and G) is a fire-rated EPS substrate used in stucco homes. It provides lasting continuous insulation, superior long-term performance, and prevents moisture buildup. The unique structure of InsulFoam T and G allows trapped moisture vapor to escape without affecting insulation performance. It is virtually immune to moisture effects, eliminating the need for costly venting procedures.

InsulFoam T and G insulation panels float on studs, absorbing building movement without transferring stress to other joints. This resilience reduces cracking problems and helps stucco retain its beauty longer.

Is stucco applied to plywood?

To apply stucco to wood, start by nailing 15-pound roofing felt onto the wood at the bottom of the wall and overlap each top edge as you move up the surface. Cover the wood with the felt and use 17 gauge metal netting to help the mortar adhere properly. Cut the netting where needed and nail it over the felt using galvanized roofing nails. This ensures the wood can support and take the weight of the stucco mortar.

Can you stucco over cement board?

PermaBASE Cement Board is a time-saving stucco solution that reduces curing time and trips around the structure from six to four compared to traditional three-coat stucco. It can also be applied to PermaBASE CI™ Insulated Cement Board. The process involves installing a weather barrier, hanging the panels, treating joints with fiberglass mesh tape, applying a ⅛”-thick stucco base coat, allowing it to cure for 8 to 24 hours, and applying a colored finish coat.

Can you apply stucco directly to wood?

Before applying stucco to a wood exterior, a plastic or metal lath is needed to prevent cracking and give the base coat a clinging effect. Stucco, a common exterior wall covering, has been used for thousands of years and is a type of plaster made from sand, cement, and water. It is commonly found in Spanish or Mediterranean architecture and offers long-lasting durability, customization options, and minimal maintenance. Stucco can be smooth or textured and can be tinted during installation or painted over after drying.

However, due to its uneven surface, it may not be suitable for high-wind locations due to potential breakage during storms or wind gusts. Stucco can be easily cleaned by rinsing it with a garden hose or using a pressure washer. Although it is prone to cracking over time, it can be patched with commercial stucco patch products.

What material is used behind stucco?

Lath is the first step in the cement stucco process, consisting of water-resistant paper, wire mesh, and other metal components. It is the foundation for applying stucco to the walls of a home. The process involves several steps, including inspection of the lath, scratch coat, cure time, brown coat, and more. These steps are based on the Long Beach city system and may vary depending on the residence’s city. Some conditions and factors may apply, so consult with your stucco contractor for more detailed instructions.

Steps include Lath inspection, Scratch coat, Cure time, Brown coat, Cure time, Poly Prep (for smooth stucco applications only), Painting non-stucco surfaces, applying a color coat, and Clean-Up and Walk-Through. These guidelines are based on the Long Beach city system and may be subject to change depending on the residence’s city.

What is stucco board?

Stucco is a cement-based mixture of Portland cement, lime, sand, and water used as a thin finish coat on residential and commercial constructions. It is highly durable, with warranties extending up to 20 years. There are three types of stucco systems: Portland cement, sand, fibers, chemicals, and water, which requires a single application and is typically applied over rigid foam board and lath for a durable siding.

Does stucco go over plywood?

The International Building Code (IBC) recognizes a one-hour fire-rated, load-bearing exterior wall assembly comprising reinforced exterior cement plaster as an exterior finish over plywood wall sheathing.

What is usually behind a stucco wall?

Stucco is typically applied using a trowel and house wrap, typically in three coats. The final coat adds color and texture. Newer systems require four coats for crack suppression and several steps for insulating systems. DIY stucco application is not recommended due to the skill set required, equipment, and specialty tools needed. It takes three or four people to complete the job, and it is not a one-person job. The application process varies based on the manufacturer’s product and manufacturer’s requirements.

Is plywood behind stucco?

Stucco is a popular, durable, and low-maintenance exterior wall finish used in residential and commercial construction. It provides a fire-resistant finish suitable for various climates. Wood-based sheathing, typically plywood or oriented strand board, is often specified under stucco, and when installed correctly, results are satisfactory. The industry recommends a moisture content of 19% for Kiln-Dried KD and S-Dry for Surface-Dry at the time of manufacture.

The National Wood Board (NWCB) recommends a moisture content of no greater than 19% for gypsum wallboard. Wood swells as moisture content increases and shrinks as moisture content decreases, with a 4% change in moisture causing a 1% size change. Twisting, warping, or compression of lumber is most noticeable at the sill plates of floorlines or band joists. If a horizontal joint or gap in the wood sheathing is not provided, buckling of the sheathing is likely to occur.