Building boards, sometimes referred to interchangeably as construction panels, are essential materials with wide applications across sectors such as art, cabinet shops, and culture. But one of the most important and highly applicable of these materials is in the construction industry. In this industry, the boards are used for structural and decorative purposes. Engineers apply these boards to decorate building surfaces and create walls, floors, and ceilings. Most construction time in modern times is reduced by the use of building boards.
Depending on the application, boards in the construction industry come in various forms, including plywood, gypsum board, cement board, oriented strand board (OSB), fibreboard, and magnesium oxide board. This guide helps you understand building boards, presenting their properties, different applications, and the advantages and limitations of each type in the construction industry. We also present a guide to board selection criteria for different types of engineering projects.
Why Are Building Boards Important in Modern Construction?
Unlike in traditional construction, engineers, architects, and manufacturers have widely adopted board technology as a guide in construction. The traditional construction is characterized by labor-intensive, time-consuming masonry work, plastering, and finishing. At every stage, the team has to ensure that previous methods were performed effectively. The resulting bottlenecks delay project delivery.
The boards have revolutionized the construction industry, leading to significant reductions in labor requirements and installation time and making projects as simple as possible. The following table compares traditional construction with modern use of building boards.
| Construction Activity | Traditional Brick & Mortar | Building Board System |
|---|---|---|
| Material Preparation | Extensive | Minimal |
| Wall Construction | Block-by-block installation | Large panel installation |
| Plastering Required | Yes | Often No |
| Curing Time | Several days to weeks | None |
| Labor Intensity | High | Moderate |
| Site Cleanliness | Lower | Higher |
| Installation Speed | Slow | Fast |
| Project Scheduling Flexibility | Limited | High Activity |
There are diverse reasons why engineers find it important to adopt building boards in modern construction.
Rapid Cutting and Customization
Engineers can easily fabricate building boards. Based on the design requirements, site workers can quickly cut boards using tools such as saws and electric cutters. The resulting design can be embedded in the walls as shutters to direct the flow of concrete. The ability to cut the boards speeds other activities, such as opening electrical openings and adjusting windows. For example, it would take 20 to 40 minutes for an electrician to create an electrical opening for a brick wall. However, for a building board, this would take only 3 to 4 minutes. Similarly, a window adjustment would take several hours for a brick wall, whereas it would take 15-30 minutes on building board.
Large Surface Area Coverage
In some applications, such as ceiling construction, building boards can provide large surface area coverage. This makes installers spend less on attachment materials like nails and glue, and cuts down on installation time.
Reduction of Wet Construction Processes
Building boards try to eliminate the activities that rely on water in traditional construction. These activities include mortar mixing, plastering, bricklaying, and screeding. Removing the wet construction by installing dry building boards further reduces curing delays, as illustrated in the table below.
| Activity | Traditional Waiting Time |
|---|---|
| Mortar Setting | 24-48 hours |
| Wall Plastering | 3-7 days |
| Concrete Screed | 7-28 days |
| Render Finishing | Several days |
Better Coordination with Modern Building Systems
Modern housing systems are more advanced than traditional construction methods. These residential and commercial buildings are mechanically, electrically, and plumbing (MEP) oriented. Engineers choose building boards over the conventional brick method to make it easier to create cavities for routine activities like wiring and plumbing.
How Do Building Boards Improve Building Performance?
In modern society, a house not only provides shelter for mankind but also offers the utmost safety and comfort. The following table summarizes performance factors necessary for modern buildings.
| Performance Category | Primary Objective |
|---|---|
| Thermal Efficiency | Reduce energy consumption |
| Acoustic Performance | Minimize noise transmission |
| Moisture Protection | Prevent water-related damage |
| Fire Resistance | Enhance occupant safety |
| Structural Stability | Maintain building integrity |
| Durability | Extend service life |
| Indoor Comfort | Improve occupant well-being |
Modern construction boards meet these requirements, prompting engineers to widely use them. Traditional brick houses lose energy through conventional airflow through walls, roofs, and floors. Building boards, especially when insulated, reduce heat loss during winter while limiting heat gain during summer.
Building boards do not have spaces between them like brick walls do. Noise usually comes from traffic, occupant activities, and vibrations. The acoustic properties of building boards absorb sound energy, improving speech privacy in houses. This makes these materials more applicable in hospital buildings, hotels, and schools where noise is highly prohibited. The materials can be applied further in the manufacturing industry to separate noise from machining services from offices.
What Are the Main Types of Building Boards?
There are a variety of building boards based on their designs. Each board finds different applications in the construction industry. This discussion analyses three common building boards used in the construction sector.
Gypsum Board (Drywall)
Gypsum board is sometimes referred to as drywall, gypsum panel, plasterboard or wallboard. This board is mainly used in the construction of the interior parts of the house. At the center of this board is a non-combustible gypsum consisting of Calcium sulfate dihydrate (CaSO₄·2H₂O). This structure has durable paper liners, resulting in a lightweight, versatile panel. These properties make this panel suitable for partitions, walls, and ceilings.
Every component of the board has its role. While the front paper facing provides a smooth finishing surface, the gypsum core delivers fire resistance and structural stability. The backing paper (typically grey or kraft) supports panel strength and handling. Edge profile facilitates joint treatment and finishing.
Why is gypsum board widely used?
Gypsum board has different characteristics, making it widely used by engineers. First, the board is light, making construction easier. The board does not require more people for heavy lifting. This lightweight, wide coverage facilitates rapid installation. Second, the boards offer smooth paint-ready surfaces. Unlike brickwork, which requires finishing before painting, the board’s surface offers a cleaner environment for painting. Third, the building board facilitates easier repairs and modifications to the building. In case of electrical faults or plumbing-related issues, technicians can easily cut through the channels, fix the issue, and then cover them up. These features allow engineers to use the building boards in modern building systems.
What are the common application areas of gypsum board?
Gypsum board can be used in various applications, including residential construction, commercial buildings, and interior partitioning systems. In commercial applications, gypsum boards are used in office buildings, retail stores, and hotels. Further, it can be used in educational, healthcare and government facilities.
What are the advantages of gypsum boards?
- Gypsum board offers lightweight construction, resulting in easier transportation, faster installation, lower labor requirements, and reduced structural loading.
- The boards offer easy installation. Constructors can use simple tools to cut through the panels and attach them directly to the framing systems.
- The boards offer cost-effective solutions. The material, labor, and repair and maintenance costs are all low.
- The smooth finish of the board makes it more compatible with paint, wallpaper, and textured finishes.
What are the limitations of the gypsum boards?
Despite the advantages of gypsum boards, they have limitations that engineers and contractors must address. First, gypsum boards have moderate impact resistance, making them vulnerable to heavy impact. This can lead to corner damage, surface dents and cracking under severe loading. Second, these boards have limited water resistance, so they require specialized treatment for use in areas like laundry rooms, kitchens, and bathrooms.
Are there specialized types of gypsum designed for specific purposes?
Based on the different applications in the construction industry, gypsum boards are modified to suit various uses. This explains the common variants of gypsum boards available in the market. The following table explains these types of gypsum board variants.
| Type | Primary Benefit |
|---|---|
| Standard Drywall | General interior use |
| Type X Gypsum Board | Improved fire resistance |
| Type C Gypsum Board | Enhanced fire performance |
| Moisture-Resistant Board | Better humidity resistance |
| Mold-Resistant Board | Improved indoor air quality |
| Impact-Resistant Board | Increased durability |
| Acoustic Board | Better sound control |
Cement Boards
These boards are made from a mixture of cement, reinforcing fibers and special mineral additives. Compared to gypsum boards, these boards are more durable and can withstand harsh environments, including fire risks, impacts, and moisture. Thus, engineers prefer to use them in wet areas and exterior applications.
How are cement boards manufactured?
The manufacturing process for these boards starts with mixing the slurry. Here, the raw materials—typically containing around 30-40% Portland cement, 40-50% silica sand, 8-10% cellulose fibers, and necessary additives—are mixed with water to make a slurry. Common fibers include wood pulp or cellulose. These processes are typically scaled using the Hatschek process or flow-on methods in specialized manufacturing plants, which form thin layers of the fiber-cement mixture. These thin layers are then accumulated on a moving felt belt to achieve the desired thickness. After this layering process, the resulting layered sheets are pressed under rollers to remove excess water, compressing the material into a single, dense sheet. The materials are then cut into different sizes and cured to harden them.
What are the desirable properties of cement boards?
The ability of cement boards to withstand extreme residential conditions makes them highly preferred over other board types, such as gypsum and plywood. These boards are more durable, water-resistant and have high dimensional stability. Further, the boards rarely support mold growth due to moisture. More importantly, these boards are fire-resistant, making them suitable for both interior and exterior applications.
What are the common applications of cement boards?
These boards are more durable and water-resistant, making them more widely applicable. The boards are used in exterior cladding systems. Engineers use these boards for exterior sheathing and cladding, which offer numerous benefits such as resisting rain and humidity, supporting facade finishes, maintaining dimensional stability, and reducing maintenance requirements.
The boards are also used as tile backing systems. Due to their water-resistant properties, these boards are used to reinforce tiles, preventing tile failure.
What are the limitations of cement boards?
Despite their many strengths, cement boards also have limitations that make professionals in the construction industry sometimes skeptical about their use. First, the boards are relatively heavy compared to gypsum and plywood. This leads to higher transportation costs, increased labor requirements for handling, and slower installation. Second, the boards are more difficult to cut and install. It requires specialized cutting tools, which may be costly. The cutting generates dust, thus necessitating the use of personal protective equipment (PPE). However, the performance benefits of these boards make it easier for engineers to navigate these challenges, thus leading them to choose them over other types of boards.
Plywood Panels
Plywood boards are widely used in the construction industry. These boards are a bonded series of thin layers of wood veneer heated and pressed together. The resulting structure of these veneers has improved strength, resistance, and stability.
Where is plywood commonly applied?
Plywood offers affordability, strength, and workability, making it widely used in construction. One application is flooring systems. Plywood is used as a structural subfloor below flooring materials. This is especially common in residential subfloors, commercial floors, and raised floor assemblies. The use of plywood in flooring helps to improve load distribution, reduce floor movements, and reduce labor costs.
The second application of plywood is in roof sheathing. The plywood acts as a substrate for roofing.
The following table summarizes the comparison between plywood and the other two common building boards.
| Property | Plywood | Gypsum Board | Cement Board |
|---|---|---|---|
| Structural Strength | High | Moderate | High |
| Weight | Moderate | Low | High |
| Moisture Resistance | Moderate | Low | Excellent |
| Machinability | Excellent | Good | Moderate |
| Fire Resistance | Moderate | Good | Excellent |
| Cost | Moderate | Low | Moderate to High |
| Exterior Applications | Suitable with Treatment | Limited | Excellent |