Cement & Aggregates

Choosing the Right Cement & Aggregates for Your Project

At County Building Supplies, our branch teams help builders, tradespeople and DIY customers choose the right cement and aggregates for their projects every day. Whether you're laying foundations, mixing concrete or mortar, preparing a sub-base or completing a landscaping project, choosing the correct materials and quantities can help you achieve a strong and long-lasting result.

Which Aggregate Do I Need?

One of the most common questions our branch teams receive is which aggregate is right for a particular job. The answer depends on what you're building, as different aggregates are designed for different applications.

• Building sand is a fine aggregate commonly used for bricklaying and mortar mixes, where a smooth and workable consistency is required.
• Sharp sand has a coarser texture and is commonly used for concrete, floor screeds, paving and other construction applications.
• Ballast is a mixture of sand and gravel that's typically combined with cement and water to produce concrete for foundations, footings and other general building work.
• MOT Type 1 is commonly used as a compacted sub-base beneath driveways, paths, patios and other hard landscaping projects.
• Gravel and decorative aggregates can be used for drainage, paths, driveways and landscaping depending on the type and size of aggregate selected.

If you're unsure whether you need building sand, sharp sand, ballast or another aggregate, tell our team what you're working on and we'll help you choose the most suitable material.

Choosing the Right Cement

Cement is used for a wide range of construction jobs, including concrete, mortar, screeds and general repairs. The right cement and mix will depend on the application, required strength and materials being used.

It's important to follow the manufacturer's instructions and the appropriate mix specification for your project rather than relying on a single mix ratio for every job. If you're unsure which product you need, our branch teams can help you find a suitable option from our range.

Bulk Bags or Pre-Packed Aggregates?

Another common question is whether it's better to buy aggregates in bulk bags or smaller pre-packed bags. For larger projects such as extensions, driveways, patios and landscaping work, bulk bags are often the more practical option. Smaller pre-packed bags can be useful for repairs, smaller DIY jobs or when only a limited quantity is required.

Our team can help you work out approximately how much material you need, helping you avoid ordering significantly too much or running short part-way through the job.

What is Lime Used For?

Lime is used in a variety of traditional and modern building applications. It can be incorporated into mortar and render mixes to improve workability and flexibility, while specialist lime products are also commonly used when working with older and historic buildings.

The correct type of lime depends on the application, so always follow the project specification or manufacturer's guidance when selecting and mixing lime products.

Ready Mixed Products for Smaller Jobs

Ready mixed and pre-mixed products can be a convenient option for smaller building and repair jobs where mixing separate cement and aggregates isn't practical. They're particularly useful when you only need a small quantity of mortar or concrete and want a consistent pre-proportioned mix.

Need Advice?

If you're not sure which cement, aggregate or ready mixed product is right for your project, visit your local County Building Supplies branch or contact our team. Whether you're building an extension, laying a patio, repairing brickwork or preparing a driveway, we'll help you choose the right materials and quantities before you order.