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Aggregate

Discover a wide range of aggregates available for online purchase, including sand bags, building bags, gravel bulk bags, ballast, MOT Type 1, grit, limestone, and kiln-dried bags.

Our easy-to-use online shop allows you to browse and order high-quality materials for all your construction and landscaping needs. Shop now and enjoy the convenience of delivery and Click & Collect.

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  • Cook Brown Building Sand Bulk Bag

    Ideal for bricks, plastering and other building projects. Supplied in a large bulk bag which is great for larger projects. Please note: Timber and stone are natural materials, and as such, variation in colour, texture, and natural markings is to be...
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    Gravel Loose 20mm (1 Tonne) (Requires Bulk Bag)

    High quality 20mm gravel for drainage, landscaping, concrete mixes and groundworks. Supplied loose by the tonne.
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    Building Sand (M) Bulk Bag

    Building sand bulk bags are ideal for bricklaying, pointing, mortar and general construction projects.
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    Aggregates R Us White Rock Salt Bag

    White rock salt provides effective ice and snow control for domestic and commercial winter maintenance.
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    Ballast 20mm Bulk Bag

    20mm ballast bulk bag provides a quality sand and gravel mix for concrete, foundations and construction work.
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    Ballast 20mm Loose (1 Tonne) (Requires Bulk Bag)

    Loose 20mm ballast for producing strong concrete mixes for foundations and structural applications.
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    Blue Slate Loose (Requires Bulk Bag)

    Loose blue slate chippings create a contemporary decorative finish for gardens, borders and water features.
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    Brown Salt Bulk Bag

    Brown rock salt bulk bags help keep roads, car parks and paths safe during icy winter conditions.
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    Building Sand Standard Bag

    Building sand is ideal for mortar, bricklaying, pointing and a wide range of general building projects.
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    Canterbury Spa Chippings Standard Bag

    Canterbury Spa decorative chippings enhance gardens, borders and paths with a stylish natural finish.
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    Caveham Soft Building Sand Loose (1 Tonne) (Requires Bulk Bag)

    Soft building sand is suitable for bricklaying, pointing and mortar mixes. Available loose by the tonne.
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    Cotswold Buff 10-20mm Chippings Bulk Bag (800kg)

    Decorative Cotswold Buff chippings add a warm natural finish to driveways, borders and landscaping.
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    Cotswold Cream Chippings Loose 20mm

    Cotswold Cream 20mm decorative stone chippings supplied loose. Ideal for driveways, borders and landscaping. Buy online today.
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    Crusher Run 20mm Loose (1 Tonne) (Requires Bulk Bag)

    20mm crusher run aggregate provides a compactable base for driveways, patios and construction projects.
  • Special Offer
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    Special Offer

    Derbyshire Peakstone 20mm Standard Bag

    Decorative Derbyshire Peakstone gravel provides a natural finish for gardens, paths and borders.
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    Granite Dust 0 to 5mm Bulk Bag

    Granite dust is ideal for paving bases, joint filling, landscaping and compacted groundwork applications.
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    Granular Fill Hardcore 40mm Loose (1 Tonne) (Requires Bulk Bag)

    Granular fill hardcore provides a stable foundation for construction, roads and groundworks.
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    Gravel Loose 10mm (1 Tonne) (Requires Bulk Bag)

    Loose 10mm gravel is suitable for drainage, landscaping, decorative applications and concrete production.
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    Grit Sand Loose (1 Tonne) (Requires Bulk Bag)

    Please note, this product is sold loose, and requires a bulk bag ordering at the same time. Grit Sand: naturally deposited pit sand, quartzite sand, crushed rock sand or marine-won sand. Used in Readymix Concrete, Block Paving or Flagging. This product...
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    Kiln Dried Sand Standard Bag

    Kiln dried sand is perfect for block paving joints, artificial grass installation and landscaping.
  • KPRO Crete Postfix Rapid Post 10 (20kg)

    Rapid setting post mix for fast and secure installation of fence posts, signs and garden structures.
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    Limestone 10mm Loose (1 Tonne) (Requires Bulk Bag)

    Please note, this product is sold loose, and requires a bulk bag ordering at the same time. For best results, we recommend a depth of 40–50mm for decorative areas, and around 150mm for driveways that need to handle vehicle weight. Our calculator...
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    Limestone 20mm Loose Aggregates (1 Tonne) (Requires Bulk Bag)

    PLEASE NOTE: This product is supplied loose and doesn't not include a bulk bag container. Call us to organise delivery and purchase of a bulk bag or order for collection.  Enhance your outdoor spaces with the versatile Limestone 20mm Loose...
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    Limestone to Dust 4mm Bulk Bag

    Limestone dust provides a compactable bedding and jointing material for paving and landscaping projects.

Aggregate products are a popular choice within landscaping and construction. At Howarth Timber & Building Supplies we stock a wide range of attractive decorative aggregates and high-quality construction aggregates including Hanson aggregates.

What is aggregate?

Aggregate products (also known as ‘aggs’) include decorative aggregates as well as aggregates used in construction.

  • Decorative aggregates: Decorative aggregates are small pieces of stone chosen to be an attractive and aesthetically appealing feature, usually within landscaping projects. For example, as plant toppers in flower beds or pots, to create a pathway or driveways, in rockeries and fishponds, and water features. Decorative aggregate stone are also hard wearing and available in a variety of colours.
  • Construction aggregates: Construction aggregates (including gravel bulk bags, crushed stone, and sand) are produced from natural sources and typically used as an additive for concrete. Other uses include drainage solutions, filling voids, protecting pipes, and creating a hard-standing surface. They can also be used in water filtration and sewage treatment processes.

What is Type 1 Aggregate?

Type 1 aggregate, commonly referred to as Type 1 Sub-Base, is a specific kind of aggregate material used primarily in construction for laying the foundations of roads, driveways, paths, and other such surfaces.

And as aggregate suppliers at Howarth, we are here for your every need. For advice and guidance on choosing the right cement and lime for your next project, contact our friendly team at your local branch.

Frequently Asked Questions

What is a Type 1 aggregate?
MOT Type 1 Aggregate is formed from recycled rubble and concrete, crushed to make it granular. This is a very popular aggregate choice as it is ideal for use in road construction and civil engineering. The granular aggregate is compacted for use as a sub base or base layer. Type 1 aggregate can be combined with cement to give it a higher bearing capacity.
How much aggregate do I need?
The amount of aggregate required will vary depending on the project. When looking at decorative aggregate, here is a rough guide of what you may require based on the area to cover: 1m2: approx. 100kg 5m2: approx. 1 bulk bag 10m2: approx 1 bulk bag (increase to 2 bulk bags if greater depth is required) 25m2: approx. 3 bulk bags If you are laying decorative aggregates for a driveway, a rough estimate based on an area of 5m x 5m at a depth of 40mm, would be to use three bulk bags of decorative aggregates (including slate chips or gravel). When selecting your choice of aggregate, keep in mind that a larger aggregate will usually settle and bond together better than smaller aggregates, making them better suited for high traffic areas such as driveways and footpaths.