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What Sand to Use for Block Paving: A Guide for Homeowners

Dec 17, 2023

When it comes to block paving, the type of sand you use can make a big difference in the final result. Not all sand is created equal, and choosing the wrong type can lead to problems such as uneven settling, weed growth, and water pooling. So, what sand should you use for block paving?

Firstly, it’s important to understand that two main types of sand are used for block paving: sharp sand and soft sand. Sharp sand, also known as grit sand, has a coarser texture and is ideal for creating a firm base for the paving blocks. Conversely, soft sand has a finer texture and is better suited for filling the gaps between the blocks.

So, which type of sand should you use? The answer depends on the specific needs of your project. Generally, sharp sand is recommended for the base layer, while soft sand is used for the top layer. However, there are exceptions to this rule, and factors such as climate, soil type, and traffic volume should also be considered when choosing the right sand for your block paving project.

Types of Sand for Block Paving

When it comes to blocking paving, choosing the right type of sand is crucial to ensure a strong and durable finish. Three main types of sand are commonly used for block paving: kiln-dried sand, sharp sand, and building sand.

Kiln-Dried Sand

Kiln-dried sand is a fine, dry sand that has been dried in a kiln to remove any moisture. This type of sand is often used for filling the joints between block paving as it is easy to brush into the gaps and provides a stable base for the blocks. Kiln-dried sand is also known as jointing sand, and it is important to choose a high-quality product to ensure that it does not wash away or erode over time.

Sharp Sand

Sharp sand is a coarser sand that is often used as a base layer for block paving. It is made from crushed rocks and has a rough texture, which makes it ideal for providing a stable base for the blocks. Sharp sand is also commonly used for laying paving slabs and building walls. It is important to choose a high-quality sharp sand that is free from clay and other impurities to ensure that it provides a strong and stable base for your block paving.

Building Sand

Building sand is a finer sand that is often used for bricklaying and other construction projects. It is not as commonly used for block paving as kiln-dried sand and sharp sand, but it can be used as a base layer for block paving in certain situations. Building sand is not as stable as sharp sand, so it is important to compact it well before laying the blocks.

In summary, choosing the right type of sand is essential for a successful block paving project. Kiln-dried sand is ideal for filling the joints between blocks, while sharp sand provides a stable base layer. Building sand can also be used as a base layer in certain situations but is not as stable as sharp sand. Choosing the right sand type for your project ensures that your block paving is strong, durable, and long-lasting.

Choosing the Right Sand

When it comes to block paving, choosing the right sand is crucial for the longevity and stability of your paving project. Here are some factors to consider when selecting the right sand for your block paving:

Permeability and Drainage

One of the most important factors to consider when selecting sand for block paving is its permeability and drainage. Permeable sand allows water to drain through it, which prevents water from pooling on the surface of your paving. This is important because pooling water can cause damage to your paving over time. Therefore, it is recommended to use permeable sand with good drainage properties for your block paving.

Paving Sand Colour

The colour of the sand you choose can significantly impact the overall look of your block paving. It is important to select a sand colour that complements the colour of your paving blocks. Typically, light-coloured sand is used for light-coloured paving blocks, while darker sand is used for darker paving blocks. However, this is not a hard and fast rule, and you can experiment with different sand colours to achieve the desired look.

Joint Stabilisation

Joint stabilisation is another important factor when selecting sand for block paving. Joint stabilisation sand is designed to bind the paving blocks together, which helps to prevent movement and maintain the stability of your paving. This is particularly important for areas with heavy foot traffic or vehicles. Joint stabilisation sand is typically a finer sand specifically designed for this purpose.

In summary, choosing the right sand for your block paving is crucial for the longevity and stability of your paving project. Consider the permeability and drainage properties of the sand, the colour of the sand, and whether joint stabilisation is required. By considering these factors, you can ensure that your block paving looks great and lasts for years to come.

paul mattimore discover paving

Paul Mattimore

Paul is the Founder of Discover Paving & Landscaping. With over 20 years experience in the trade, Paul has a mountain of knowledge when it comes to crafting the perfect outdoor area. He still oversees every single job delivered by Discover, ensuring the highest of standards which have led to multiple awards including the Marshalls Best Driveway Transformation.