Roofing is more than just shingles and tiles; it’s about the entire structure that keeps us safe and dry. But what exactly is a roof slab construction, and how does it fit into the big picture of roofing? In this blog, we’re going to simplify roof slab construction, ditch the fancy words, and use clear examples to help you grasp this essential aspect of roofing.

1. The Foundation: Roof Decking

Imagine your roof as a giant puzzle, and the foundation of that puzzle is roof decking. Roof decking, typically made of plywood or oriented strand board (OSB), provides the base upon which everything else is built. It’s like the solid ground beneath your feet.

2. The Skeleton: Roof Trusses

Now, think of roof trusses as the skeleton of your roof. These are the triangular frames that provide support and shape to your roof. Just like the bones in your body give you structure, roof trusses give structure to your roof.

3. The Skin: Sheathing

Sheathing is like the skin that covers your roof’s skeleton. It’s usually made of plywood or OSB, and it serves as a solid surface for roofing materials to attach to. Imagine it as the outer layer of your skin, providing protection and strength.

4. The Roof Slab: Concrete Magic

Now, let’s dive into the heart of the matter – the roof slab. Roof slab construction involves pouring a layer of concrete on top of the sheathing. This concrete layer is like the sturdy slab of a skyscraper – it provides exceptional strength and durability.

5. The Purpose: Flat Roofs

Roof slab construction is commonly used for flat roofs. These are roofs that have a minimal slope or pitch. Picture a basketball court – it’s flat and ideal for roof slab construction.

6. The Benefits: Durability and Usability

One of the main advantages of a roof slab is its durability. Concrete can withstand harsh weather conditions and is highly resistant to damage. Additionally, flat roofs created with roof slab construction can be used for various purposes, like rooftop gardens or solar panel installations.


In a nutshell, roof slab construction is like adding a robust concrete layer to your roof’s structure. It provides strength and durability, making it ideal for flat roofs. Just as a skyscraper’s solid foundation supports its height, a roof slab adds stability and usability to your roofing structure.

So, the next time you see a flat roof, remember that it might just have a concrete secret beneath the surface – a roof slab construction that ensures strength and longevity. Roof slab construction is like the hidden superhero of flat roofs, quietly but efficiently doing its job above your head.


As a civil engineer and roofer, I love to share the experience that I have gained through the last couple of years. In the roofing industry, practical experience is a very crucial fact that can help you a lot. Hence, I want to help you with my blog.

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