Plywood is a versatile and essential building material used in construction and carpentry projects. When it comes to purchasing plywood, selecting the right grade and quality can make a significant difference in the outcome of your project. In India, there are several types of plywood grades and quality available in the market. This article will cover everything you need to know before making a plywood purchase in India.
Know About Plywood
Plywood is a type of engineered wood that is made by glueing together several thin layers of wood veneers. These veneers are stacked in a cross-grain pattern, with each layer perpendicular to the one below it. The resulting panel is strong, stable, and has excellent dimensional stability. Plywood is available in different grades and qualities, making it suitable for various applications.
Types of Plywood
In India, plywood is classified based on the type of wood used to make it. Here are the three main types of plywood:
Softwood Plywood
Softwood plywood is made from coniferous trees such as pine, fir, spruce, and cedar. It is widely used in construction and furniture making.
Hardwood Plywood
Hardwood plywood is made from deciduous trees such as maple, birch, oak, and mahogany. It is commonly used in high-end furniture, cabinetry, and decorative applications.
Tropical Plywood
Tropical plywood is made from tropical hardwoods such as teak, rosewood, and mango. It is known for its durability and resistance to moisture and pests.
Decorative Plywood
Decorative plywood is used for aesthetic purposes and is available in a wide range of patterns, colors, and textures. It is often used in interior design applications, such as wall panels, ceilings, and furniture.
Flexible Plywood
Flexible plywood is designed to bend and conform to various shapes and is ideal for curved surfaces, such as furniture, columns, and arches.
Aircraft Plywood
Aircraft plywood is designed for high-stress applications, such as aircraft construction, and is known for its strength, durability, and lightweight properties.
Fire Retardant Plywood
Fire retardant plywood is treated with chemicals that resist fire and is often used in building construction, such as walls, roofs, and ceilings, where fire resistance is crucial.
Popular Plywood Grades in India
Plywood is graded based on its intended application and quality. In India, there are three main grades of plywood available in the market:
MR Grade Plywood
MR (Moisture Resistant) grade plywood is suitable for indoor use in dry conditions. It is commonly used in furniture, cabinets, and partitions. MR-grade plywood is made using urea-formaldehyde resin, which is not waterproof and can degrade over time if exposed to moisture.
BWR Grade Plywood
BWR (Boiling Water Resistant) grade plywood is suitable for interior and exterior use in wet conditions. It is commonly used in kitchen cabinets, bathroom vanities, and outdoor furniture. BWR-grade plywood is made using phenol-formaldehyde resin, which is waterproof and can withstand exposure to moisture and humidity.
Marine Grade Plywood
Marine-grade plywood is the highest quality plywood available in India. It is suitable for use in extreme wet conditions and is commonly used in boats, docks, and other marine applications. Marine-grade plywood is made using phenol-formaldehyde resin and is highly waterproof, making it resistant to rot, fungal growth, and insect infestation.
Plywood Quality Parameters
Apart from the grade, plywood is also classified based on several quality parameters. Here are some of the essential quality parameters to consider when buying plywood:
Moisture Content
The moisture content of plywood affects its strength and stability. Plywood with high moisture content is prone to warping and delamination. It is essential to choose plywood with a moisture content of less than 12%.
Density
The density of plywood determines its strength and durability. Plywood with high density is more robust and less likely to break or crack. However, denser plywood is also more expensive.
Bonding Strength
The bonding strength of plywood determines how well the veneers are glued together. Plywood with high bonding strength is more durable and less likely to delaminate.
Surface Finish
The surface finish of plywood affects its appearance and ease of use. Plywood with a smooth surface finish is easier to paint and finish. It is also more aesthetically pleasing.
Factors to Consider While Choosing Plywood
Choosing the right plywood can be a daunting task, given the various grades and quality parameters to consider. Here are some essential factors to consider while selecting plywood:
Application
The application of plywood determines the grade and quality to choose. Plywood used in construction and furniture making requires a higher grade and quality than plywood used for decorative purposes.
Cost
The cost of plywood varies based on its grade and quality. It is essential to balance the cost and quality to ensure that you get value for your money.
Durability
The durability of plywood determines its lifespan and resistance to wear and tear. It is essential to choose durable plywood to avoid frequent replacements.
Appearance
The appearance of plywood affects its visual appeal and aesthetics. Plywood used in decorative applications requires a higher quality and finish than plywood used for construction and furniture making.
Environmental Impact
The environmental impact of plywood affects its sustainability and ecological footprint. It is essential to choose eco-friendly plywood that is made from sustainable and renewable sources.
Conclusion
Purchasing the right plywood is essential to ensure that your construction or carpentry project is successful. Understanding the different grades and quality parameters of plywood can help you make an informed decision when buying plywood in India.
It is crucial to choose eco-friendly plywood that is made from sustainable and renewable sources to reduce your ecological footprint. By following these guidelines, you can purchase high-quality plywood that meets your project’s requirements and specifications while ensuring that you contribute to a sustainable environment.
