Types of exterior cement board

Exterior cement board, also known as fiber cement board, is a construction material used for exterior siding, facades, and other applications in the building envelope. It is made from a mixture of cement, cellulose fibers, and silica, which are molded into sheets and cured to form a durable board. This board is popular in the construction industry because it can withstand harsh weather conditions and is fire-resistant. The boards are also used as an alternative to plywood and gypsum. Here are the types of cement boards:

Fiber Cement Board:

The fiber cement board is a type of cement board used for exterior purposes. It consists of a mixture of cement, silica, and cellulose fibers molded into flat sheets. The board is cured to form a durable and rigid board. The board is popular in the construction industry because it can withstand harsh weather conditions. It is used for exterior siding, roofing, and soffits.
Fiber Cement Lap Siding:

These are long, horizontal boards resembling traditional wood lap siding. They are installed in overlapping rows, similar to wood or vinyl siding. The boards are designed to mimic the appearance of wood siding while offering the durability and low maintenance of fiber cement. They are used to enhance the aesthetic appearance of a building.
Stucco-Clad Boards:

These boards feature a stucco finish that provides a textured, plaster-like appearance. They are ideal for creating a modern, Southwestern, or Mediterranean look. The boards are designed to create a modern or Mediterranean look with a textured, stucco finish.
Wood-Textured Cement Boards:

These boards have a wood-like texture, allowing them to blend in with other natural materials. They are used to create a rustic or natural appearance without sacrificing the durability of fiber cement. The boards are finished to resemble various types of wood, such as cedar, redwood, or oak. They provide the appearance of wood siding without the maintenance issues associated with natural wood.
Concrete Formwork Boards:

These are specially designed cement boards used as formwork during concrete pouring. They are made from high-strength fiber cement that can withstand the pressure of wet concrete. The boards are reusable, making them a cost-effective option for construction projects.
Gypsum Cement Board:

This type of board is made from gypsum core encased in heavy-duty, 100% recycled paper or fiber mat. It is specifically designed for use in exterior walls and ceilings. The board provides a smooth, durable substrate for tile, stone, or other wall coverings.

Function and Feature of Exterior Cement Board

Exterior cement boards are made of fiber cement and are used in construction because of their numerous advantages. Below are some of the features and functions of cement boards.

Weather resistant

Cement boards are made of cement, which makes them ideal for exterior use. They are not affected by water and do not allow it to pass through. Cement boards also do not rot and can survive harsh weather conditions like storms and heavy winds. They are also stable under UV light and do not discolor when exposed for long.
Durability

The cement used in making cement boards is very strong and makes the boards last longer. They are resistant to wear and tear and are not easily damaged by everyday activities like scraping and banging. Their durability makes them low maintenance since they do not need regular repairs or replacements.
Fire resistance

Cement boards are made with non-combustible materials, making them good at stopping the spread of fires. They have a fire rating classification that shows the time it takes for heat to go through the board. This helps provide protection and peace of mind for homeowners.
Moisture control

Cement boards are good at stopping moisture from getting into the walls. This helps control the moisture level inside and prevents problems like mold growth. Some cement boards have special coatings that help control moisture without stopping ventilation.
Easy installation

Cement boards are easy to install and give a seamless look to any project. They have edges that help builders fit the boards together without gaps. Builders can also use screws to secure the boards, which makes the boards stable and secure.
Aesthetic versatility

Cement boards come in different textures and styles that can be customized to fit any project. They can be painted or have designs added to them to make the building look nice. Their versatility makes them a good choice for modern and traditional building styles.
Insulation

Cement boards are heavy and help control the temperature inside buildings. They help keep buildings warm in winter and cool in summer, which reduces the need for heating and cooling systems. This makes them an energy-efficient choice for homeowners.

Scenarios of exterior cement board

Residential Construction:

Exterior cement boards are often used in residential construction. They're versatile and can be used in different areas of the house, like kitchens, bathrooms, and living rooms. They're also easy to install and can be tailored to fit different design and style preferences.
Commercial Buildings:

Cement boards are also used in commercial buildings. They provide a beautiful and modern finish to commercial spaces like hotels, restaurants, and offices. Their ability to withstand heavy use and traffic makes them a popular choice for these buildings.
High-Rise Buildings:

Cement board is a popular choice for high-rise buildings. They provide structural support and stability in high-rise buildings. Their durability and strength make them an ideal choice for these structures. They also offer protection against harsh weather conditions, ensuring the building remains intact.
Hot and Humid Climates:

Cement boards are ideal for hot and humid climates. They help prevent mold and mildew growth, ensuring a healthy living environment. Their moisture-resistant properties make them a popular choice in these areas.
Coastal Areas:

Cement board is also great for coastal areas. They're resistant to saltwater and moisture, making them ideal for these locations. They offer long-term performance and protection, ensuring the building remains in good condition.
Commercial Kitchens and Bathrooms:

Cement boards are great for commercial kitchens and bathrooms. They're easy to clean and maintain, making them a popular choice in these areas. Their hygienic surface helps prevent the spread of germs and bacteria.
Fire-Prone Areas:

Cement boards are used in fire-prone areas. They're non-combustible and provide excellent fire resistance, ensuring the safety of the building and its occupants. Their use can help slow the spread of fire and protect occupants.
Areas Requiring High Hygiene Standards:

Cement boards are great for areas that require high levels of hygiene. Their smooth and non-porous surface makes them easy to clean and maintain, preventing the buildup of dirt and grime. This makes them a popular choice for hospitals, clinics, and other medical facilities.

How to choose exterior cement board

Moisture Resistance

Exterior cement boards are designed to withstand different weather conditions and should be installed in areas with high moisture content (such as bathrooms and kitchens). Therefore, buyers should consider boards with high moisture resistance, such as fiber cement boards.
Durability

Consider choosing durable boards that will offer long-term value and performance. A durable cement board can withstand harsh weather conditions, impact, and time, maintaining its integrity and appearance.
Installation Requirements

Consider choosing a cement board that is easy to install and compatible with the project's needs. Some cement boards require specialized knowledge and tools, which can increase overall project costs.
Finish Options

These boards come in different finishes and colors. Buyers should consider finish options that will enhance the home's aesthetic appeal.
Cost

Buyers should consider boards that fit their budget while providing the necessary quality and performance. The initial cost of the board is important, but long-term value and durability are also essential.
Environmental Considerations

Buyers who are environmentally conscious should consider a cement board manufactured with sustainable practices. They can also consider boards that are fully recyclable.
Brand Reputation

Consider choosing a cement board from a reputable brand with a proven history of providing quality products. Such brands provide detailed installation guidelines and customer support.
Fire Resistance

Exterior cement boards, such as gypsum boards, are fire-resistant. Fire-resistant boards slow down the spread of fire, providing more time for people to evacuate a burning building. Consider boards with high fire resistance.
Warranty

A warranty shows that the manufacturer is confident in the product's quality and durability. Buyers should consider boards with a solid warranty covering potential issues for an extended period.

exterior cement board Q and A

Q1: What is the main purpose of cement board?

A1: Cement boards are mainly used to create a flat surface on which tiles can be glued. The boards provide a strong, waterproof, and heat-resistant base for different types of tiles in areas like kitchens and bathrooms.

Q2: Do you need to seal a cement board?

A2: Yes, it is important to seal the cement board with a waterproof membrane to prevent moisture from seeping through. This helps protect the underlying structure, especially when the cement board is used in areas prone to water exposure, such as bathrooms and shower stalls.

Q3: Which side of the cement board faces out?

A3: The mesh-reinforced side of the cement board should face outward when used as a backer board. This is the side that tiles will be adhered to during installation.

Q4: What are the disadvantages of cement board?

A4: Some of the disadvantages of cement board include its heavy weight, which can make it more difficult to handle and install compared to gypsum-based or fiberglass mat boards. Additionally, cement board does not provide any moisture control or insulation properties, unlike some other cement board options.

Q5: How long will a cement board last?

A5: When installed correctly, cement board can last for several decades. Unlike gypsum board, which can deteriorate when exposed to moisture, cement board is waterproof and will not be damaged by moisture or humidity.