
Wood and plastic are two commonly used materials with distinct characteristics and applications. While wood is a natural resource sourced from trees, plastic is an artificial material made from fossil fuel feedstock. One key difference between the two lies in their weight. Plastic, made up of polymers, is known for its lightweight and feather-like properties, making it easier to transport than wood. On the other hand, wood, composed of cellulose fibres, is generally heavier than plastic. The weight of wood can vary depending on factors such as wood species and moisture levels. Solid wood, for example, is heavier than plywood or particle board, which are lighter alternatives commonly used in woodworking and furniture production. While plastic lumber has been developed to offer improved durability and water resistance compared to wood, the weight comparison between specific types of plastic and wood products can vary.
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What You'll Learn

Plastic is made from polymers, making it lighter than wood
Plastic is a synthetic polymer, which means it is made from long chains of bonded molecules. These molecules are derived from oil, petroleum, or bio-based sources. Plastics are known for their ability to be moulded, extruded, or pressed into solid objects of various shapes. This is called plasticity, and it is a defining characteristic of plastics.
Wood, on the other hand, is a natural material that has been used as a building material for a long time. While wood can be cut into various shapes and is durable, it is susceptible to damage over time. Wood can break apart due to physical impacts or the actions of organisms like moulds and insects.
Plastic is often chosen over wood because it is lighter, stronger, and more durable. The strength of wood is dependent on its quality, and it often needs to be treated with chemicals to protect it from the elements. Plastic, on the other hand, can be reinforced with additives to make it even stronger and more rigid.
Additionally, plastic is completely water-resistant, whereas wood must be treated with a protective coating to withstand exposure to water and humidity. This makes plastic a more suitable material for outdoor use, as it is not affected by precipitation, condensation, or humidity.
The lightweight nature of plastic is one of the reasons for its widespread use. Plastic can replace metals in vehicles, for example, reducing weight and improving fuel efficiency. This adaptability, combined with its durability, flexibility, chemical resistance, low toxicity, and low-cost production, has led to plastic becoming a commonly used material around the world.
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Wood is heavier, but it's a renewable, natural resource
Wood is a natural resource that is sourced from trees, making it a renewable resource. It has been used since the beginning of mankind. However, wood is heavier than plastic. Plastic is made up of polymers that make it lightweight, whereas wood is composed of cellulose fibres that give it strength and make it heavier relative to plastic.
The weight of wood depends on the species of tree and moisture levels. For example, plywood is a lightweight alternative to solid wood, which is the heaviest of the three main woodworking substrates (the others being plywood and particleboard). Particleboard is made from compressed wood chips, sawdust, and glue, and is therefore lighter than solid wood.
Wood has been used in construction for a long time due to its durability and workability. However, it is susceptible to damage from physical impacts, insects, and mould, which can cause it to break apart over time. Plastic lumber, on the other hand, is stronger and more durable than wood. It can be reinforced with fiberglass strands or rebar to increase its rigidity and strength for heavy-duty structural use.
Despite these advantages, plastic is an artificial material made from fossil fuels, which has harmful effects on the environment. Plastic is not as widely recycled as wood, and only 9% of the world's plastic consumption is recycled. The burning of plastic releases hazardous gases, including furans, mercury, dioxins, and polychlorinated biphenyls, which pose threats to wildlife and humans. In contrast, wood is an organic source that is safe for humans and children, and it has a lower carbon footprint and energy consumption than plastic.
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Plastic lumber is reinforced with fiberglass strands to increase rigidity
Plastic lumber is a durable and eco-friendly alternative to wood that is particularly well-suited for outdoor use. While wood is a versatile building material, it is susceptible to damage from physical impacts, insects, mould, and exposure to water and humidity. Plastic lumber, on the other hand, offers superior resistance to these elements.
To further enhance the properties of plastic lumber, it can be reinforced with fiberglass strands. This reinforcement increases the rigidity and durability of the plastic lumber, making it even stronger than wood. The added fiberglass strands prevent the plastic lumber from breaking apart or chipping off due to physical impacts.
One prominent example of reinforced plastic lumber is the Structural-X Recycled Structural Composite Lumber by American Plastic Lumber Inc. This product is designed for heavy-duty structural use and offers exceptional performance in harsh environments, including saltwater, intense sunlight, and corrosive conditions.
The addition of fiberglass strands makes plastic lumber suitable for various applications, including bridges, marine structures, boardwalks, docks, and piers. It can also be wet-set directly into concrete, demonstrating its versatility in construction.
Plastic lumber reinforced with fiberglass strands combines the advantages of plastic's water and impact resistance with the added rigidity and strength provided by the fiberglass. This results in a building material that is not only lighter but also stronger and more durable than traditional wood.
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Solid wood is the heaviest option for woodworking substrates
Wood and plastic are two of the most commonly used materials in our daily lives. While plastic is made from fossil fuel feedstock and polymers, wood is a natural resource sourced from trees.
Wood is composed of cellulose fibres that give it strength and make it heavier than plastic. The weight of wood also varies depending on the species of tree and its moisture content. Solid wood, made from real wood planks, is the heaviest option for woodworking substrates. Plywood, on the other hand, is made of thin sheets of veneer bonded together, resulting in a material that is sturdier and lighter than solid wood. Particleboard, also known as chipboard, is another lightweight alternative to solid wood. It is made from wood chips, sawdust, and glue, making it more substantial than plywood but not as dense as solid wood.
The weight of solid wood can be a disadvantage when mobility and weight are important factors in a project. For example, when creating cabinets or furniture, lightweight plywood may be preferred over solid wood due to space or portability constraints. However, solid wood's durability and timeless aesthetic appeal may outweigh its substantial mass in certain applications.
While plastic is lighter than wood, it is not as durable. Plastic lumber can be reinforced with fiberglass strands or rebar to increase its rigidity and strength. Additionally, plastic lumber is completely water-resistant, whereas wood requires treatment with protective chemicals to withstand outdoor conditions. This makes plastic lumber a popular choice for structures exposed to precipitation, condensation, or direct contact with water.
Despite their differences in weight and strength, both wood and plastic have their advantages and disadvantages. Wood is renewable, energy-efficient, and safe for humans and the environment. Plastic, on the other hand, is lightweight and strong, but it is derived from harmful materials and releases hazardous gases when burned.
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Wood is more energy-efficient to produce than plastic
Wood is a natural resource sourced from trees, while plastic is an artificial material made from fossil fuel feedstock. Wood has been used as a building material since the inception of mankind, but plastic is a more modern invention.
Plastic is often chosen for construction because it is stronger than wood. Wood can break apart over time due to physical bumps and grazes, or it can be weakened by organisms such as moulds and insects. Plastic is completely water-resistant, whereas wood must be treated with a protective chemical coating to withstand outdoor conditions. Plastic can also be made more rigid and durable by adding materials such as fiberglass strands.
Recycling wood lowers the amount of waste going to landfills, saves energy, and reduces the use of resources. It is also a very clean and cheap way to recycle since wood does not need any special cleaning beforehand. However, plastic can also be recycled and used for new plastic products, although not all plastic is recyclable. In addition, the recycling rate for plastic is generally low compared to other materials.
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Frequently asked questions
Plastic is lighter than wood. Wood is made up of cellulose fibres, which make it strong but also give it a heavier weight than plastic, which is made up of polymers.
Wood is a natural resource, sourced from trees. It is cut into various shapes and sizes and used as a building material. Plastic, on the other hand, is an artificial material made from fossil fuel feedstock.
Yes, plywood and particle board are both lighter alternatives to solid wood. Particle board is made from wood chips, sawdust, and other wood byproducts, and is a popular choice for furniture due to its low cost and manageable weight. Plywood is also made from thin sheets of veneer that are bonded together, making it lightweight and sturdy.











































