Choosing the right type of sand or granular aggregate can make a huge difference to the success and strength of your project. Whether you’re mixing concrete, laying paving, or landscaping a garden, each material has specific uses and advantages.

At Alter Supplies, we stock a full range of building sands and aggregates for trade and DIY — available in Renfrewshire and UK-wide.

⚙️ Sharp Sand (Concrete Sand)

👉 Shop Concrete Sand
A coarse, gritty sand with angular grains — ideal for concrete, screeding, paving and drainage layers.

🧱 Building Sand

👉 Shop Building Sand
Fine, soft sand for bricklaying, pointing and rendering. Produces smooth mortar that resists cracking and shrinkage.

🪨 Ballast

👉 Shop Ballast
A mix of sharp sand and gravel (up to 20mm). Perfect for strong concrete mixes, footings, and shed bases.

🌑 Whin Dust

👉 Shop Whin Dust
A fine, dark crushed stone aggregate used as a compactable sub-base beneath paving slabs, driveways, and decorative gravel.

⚖️ Comparing Sand and Granular Aggregates

🛒 Shop Building Materials at Alter Supplies

Find everything you need for your next landscaping or construction project — from timber and fencing to aggregates and tools.

👉 Browse Sand & Aggregates Collection
Serving Renfrewshire, Paisley, Glasgow, delivery.