Screed: A Foundation for Strength in Construction

Screed is a key construction material used to prepare surfaces for finishing layers like tiles, wood, or carpets. By creating a smooth and level surface, screed helps ensure the longevity and stability of the final product. In this article, we explore the basics of screed, its different types, and how it works in conjunction with geosynthetics for enhanced durability.

What is screed used for?

Screed serves as the foundation for a variety of flooring materials, ensuring that the surface is level and capable of supporting the weight of foot traffic, furniture, and equipment. It is also used in outdoor construction, where it helps level surfaces for pavers or asphalt, contributing to both durability and visual appeal.

How is screed applied?

Screed can be applied either manually or using machines. Manual application involves using a trowel or screed board, which requires skill and patience. Mechanical screeding is faster and more efficient, particularly for larger areas. After being laid, the screed must cure properly to form a solid foundation for the top layers.

What are the types of screed available?

Several screed types exist for different applications:

• Bonded Screed: Attached directly to the base, ideal for thin applications.
• Unbonded Screed: Placed over a separating layer, useful when working with variable base materials.
• Floating Screed: Applied over insulation, typically for underfloor heating.

These options allow builders to choose the most suitable type for their specific project requirements.

How does screed interact with geosynthetics?

Geosynthetics such as geotextiles and geogrids are often used under screed to improve its performance. These materials help reinforce the screed, manage moisture, and stabilize the soil underneath. This is particularly useful in high-load areas, as it extends the lifespan of both the screed and the final surface.

Selecting the right type of screed and understanding its relationship with geosynthetics is key to building structures that last. Screed not only provides a level foundation but also enhances the overall durability and strength of the entire construction project.