What is Concrete Formwork?

Concrete is the backbone of most modern construction projects. From buildings to bridges, roads to driveways, its strength and versatility are undeniable. But have you ever wondered how concrete takes its final shape? That’s where concrete formwork comes into play.

But what exactly is concrete formwork, and why should you care about it?

This blog will walk you through everything you need to know about Concrete Formwork, its types, uses, and even how it impacts your concrete projects.

1. Understanding Concrete Formwork

What is Concrete Formwork?

Concrete Formwork is the temporary mould or structure that holds wet concrete in place until it cures and hardens into a solid structure. Think of it like a mould for clay, but instead of shaping clay, you’re shaping concrete. This mould is essential because concrete, when poured, is liquid and needs to be contained until it sets.

Formwork provides the necessary shape, strength, and stability to ensure the concrete cures in the right form. The process of creating and using formwork is critical to getting the desired concrete shape and finish for a project. There are various materials and techniques used in formwork, and selecting the right type is key to the success of your project.

Purpose of Concrete Formwork in Construction

The primary purpose of formwork is to maintain the desired concrete structure. Until the concrete has hardened and cured and reached its required strength. Preventing it from spreading out and losing its intended structure. Formwork also provides a way to control the texture and finish of the surface once the concrete has been set.

Formwork is necessary for various types of concrete. Including walls, beams, floors, and columns. It is the first step in turning liquid concrete into a solid shape.

Why is Concrete Formwork Important?

Concrete formwork helps:

• Create a smooth finish
• Keep concrete in place as it cures
• Maintain safety during construction
• Ensure the proper shape and size of concrete structures

Historical Use of Concrete Formwork

Concrete formwork isn’t a modern invention. The concept of formwork dates back to ancient civilizations. The Romans used rudimentary formwork techniques in the construction of grand structures like the Pantheon and the Colosseum. Which stands strong even today.

These impressive feats of engineering wouldn’t have been possible without well-thought-out formwork systems that ensured the concrete hardened in the right shape. Over time, advancements in materials and technology have made concrete formwork more efficient and versatile.

2. Types of Concrete Formwork

Not all concrete formwork is the same. There are different types based on the nature of the project, the materials used, and whether the formwork is temporary or permanent. Here are the most common types:

1) Temporary Formwork

Temporary formwork is the most commonly used formwork in modern construction. It is typically made from materials like aluminium, steel, or plywood.

Temporary formwork is used for moulding concrete only for a short period. Until it hardens and can support itself. Once the concrete has cured. Once the concrete has set. This formwork is removed and can be reused for other projects.

Common materials used in temporary formwork include:

• Aluminium
• Steel
• Plywood

Advantages:

• Lightweight and easy to transport
• Reusable, which makes it cost-effective in the long run
• Ideal for large-scale projects requiring multiple forms

2) Permanent Formwork

Permanent formwork is left in place after the concrete has hardened. It’s designed to remain as part of the finished structure. This type of formwork is often used for walls or foundations.

Common materials for permanent formwork include:

• Foam (used in insulation and for specific structural requirements).

Benefits:

• Time-saving: Reduces construction time since no removal process is required.
• Additional insulation: Foam formwork provides excellent insulation properties.

3) Specialised Formwork Types

In certain cases, custom formwork is used for unique architectural designs or specialized concrete shapes.

a) Single-Sided Formwork

Single-sided formwork is used when only one side of the concrete structure needs to be supported. It is often used in walls where the other side is already supported by existing structures.

b) Two-Sided Formwork

This type of formwork involves two sides to enclose the concrete, providing full support. It is most commonly used for projects like slabs and beams.

c) Custom Formwork for Unique Designs:

For structures with complex shapes, custom-made formwork is created to fit the exact specifications.

3. Most Common Materials Used in Concrete Formwork

Different construction projects require different types of Concrete Formwork. The choice of material used for formwork plays a major role in the cost, durability, and efficiency of the project.

Let’s explore the most common types used in the industry. Here’s a breakdown of the most common materials used for concrete formwork.

1) Timber Formwork

One of the oldest and most widely used types, timber formwork is made from wood planks. It’s commonly used for smaller-scale projects like residential homes. Timber is affordable, easy to handle, and can be shaped to create complex designs.

Uses:

• Residential projects like house foundations and walls.
• Quick and easy setups for small-scale projects.

2) Steel Formwork

Steel formwork is made from high-strength steel and is used in larger, more complex projects. It’s durable and reusable, making it ideal for large buildings or commercial projects.

Uses:

• High-rise buildings
• Large commercial buildings

3) PlyLVL Formwork

LVL (Laminated Veneer Lumber) formwork is a modern and versatile type of formwork material, made by bonding multiple thin layers of wood veneers together with adhesives under heat and pressure. The result is a strong, lightweight, and durable product that is well-suited for concrete construction.

LVL formwork is becoming increasingly popular in the construction industry due to its superior strength-to-weight ratio and its ability to resist warping and shrinkage. This makes it an excellent choice for projects where precision and durability are critical.

Uses:

• High-quality finishes for concrete slabs and walls.
• Medium to large-scale construction projects requiring long-lasting formwork.

4) Plastic Formwork

Plastic formwork is lightweight and durable, often used for projects that require fast construction, such as modular homes or small buildings. It’s less common but has its advantages for specific use cases.

Uses:

• Prefabricated modular homes
• Quick, smaller-scale projects

5) Aluminium Formwork

This is similar to steel formwork but lighter and more flexible. Aluminium formwork is highly reusable and is commonly used in specialised concrete construction projects.

Uses:

• High-rise buildings
• Large commercial projects

6) Fabric Formwork

A newer, innovative type of Concrete Formwork, fabric formwork uses flexible, strong fabrics to shape the concrete. This formwork allows for unique and intricate designs, making it a choice for specialized architectural projects.

Uses:

• Complex, organic architectural shapes
• Experimental or artistic concrete structures

Advantages and Disadvantages of Each Material

4. Choose the Right Formwork for Home Extensions & Landscaping Projects

Picking the right formwork is key to making sure your construction project stays on track, within budget, and is durable. The choice of formwork depends on factors like project size, cost, complexity, and the type of finish you want. Here’s a simple guide to help you choose the best formwork for your project.

Best Options for Home Extensions: LVL or Timber Formwork

For home extensions, you need formwork that is affordable, strong, and easy to use. Both plywood and timber formwork are great choices for these types of projects.

LVL Formwork

Ply formwork is lightweight, easy to handle, and affordable. It can be shaped to fit different designs and is great for custom work. It’s also environmentally friendly, as many suppliers offer recyclable options. Ply formwork is especially suited for smaller-scale home extensions like extra rooms, garages, or small second stories.

Timber Formwork

Timber formwork is simple to use and transport, making it ideal for smaller projects. It’s also quick to assemble, which helps if you’re on a tight timeline. While not as durable as steel, timber provides enough support for walls, foundations, and beams in home extensions. Timber is commonly used in projects like home additions, creating new foundations, and building retaining walls.

Ideal For:

• Slabs and foundations for small extensions, like adding a room or garage.
• Walls and beams for residential construction, such as building new walls or adding structural elements.
• Custom shapes and sizes for unique designs, such as bespoke home additions or renovations.

Best Option for Gardens or Landscaping Projects: Plastic Formwork

For outdoor projects like garden walls, landscaping, or retaining walls, plastic formwork is a great choice. It’s lightweight, easy to work with, and durable in wet conditions.

Plastic Formwork

Plastic formwork is resistant to moisture, making it perfect for outdoor projects. Unlike timber, it won’t absorb water or break down. It’s also lightweight, so it’s easy to move and set up, especially in garden areas. Plus, it’s cost-effective for smaller landscaping tasks that don’t require heavy-duty formwork. It’s ideal for projects such as garden walls, paths, or small outdoor features.

Best For:

• Garden walls and retaining walls, often used to manage soil levels or create garden features.
• Pathways and edges in landscaped areas, ideal for creating neat and structured walkways.
• Water features or small outdoor concrete structures, like planters or fountains.

Why It’s Great for Landscaping:

• Weather resistance: Stands up to rain and moisture, which is perfect for outdoor work.
• Quick setup: Ideal for fast landscaping projects, like garden paths or retaining walls.
• Flexible: Can be moulded into various shapes for custom garden features, such as raised flower beds or decorative borders.

Final Words

In summary, Concrete Formwork is an essential part of the construction process. Providing the mould that shapes concrete into durable structures. From Concrete Formwork Perth to understanding the concrete formwork process. This is a critical step for achieving quality, long-lasting results.

By choosing the right type of formwork, and knowing how to maintain your concrete surfaces. And understanding the common concrete types. You can ensure your projects are successful. Whether you’re adding a concrete extension to your home or using concrete in your garden. You now have all the knowledge you need to get started.

Find Premium LVL Formwork at Ply Supply Perth

Looking for high-quality LVL Concrete Formwork Perth for your next construction project? At Ply Supply Perth, we offer durable and reliable Laminated Veneer Lumber (LVL) formwork designed to deliver strength, stability, and precision to your concrete structures.

Whether you’re working on a small-scale project or a large commercial build, our LVL formwork ensures a smooth finish and consistent results every time.

Visit Ply Supply Perth today to explore our range of LVL formwork solutions and get expert advice tailored to your project’s needs.

Buy Concrete Formwork Products Online