0-40mm MOT Type 1 Recycled Sub Base

0-40mm MOT Type 1 Recycled Sub Base is a recycled aggregate produced from processed construction and demolition materials. The material is crushed, screened, and graded to meet the Type 1 sub base specification. It contains a well-graded mix of coarse aggregate, fines, and binding particles.

The material compacts to form a dense and stable layer under mechanical compaction. The presence of fines allows the aggregate to bind when compacted. Load is distributed across the layer, reducing deformation under traffic.

0-40mm MOT Type 1 Recycled Sub Base is used in domestic, commercial, and civil construction projects. It is applied as a foundation layer beneath roads, driveways, car parks, hardstandings, and paved areas.

Material Classification

0-40mm MOT Type 1 Recycled Sub Base is classified as a recycled aggregate. It is manufactured from processed concrete, brick, asphalt, and similar inert materials. The product is supplied to meet the requirements of the Type 1 sub base specification.

Grading and Particle Size Distribution

The aggregate is graded from fines up to a maximum particle size of 40mm. The grading is continuous, allowing effective compaction and load transfer. Particle distribution is controlled to comply with Type 1 requirements.

Compaction and Load Behaviour

The material is designed for structural performance as a sub base layer.

• Compacts to a dense and stable formation.

• Fines content enables particle binding.

• Supports moderate to heavy load trafficking.

• Performs best when placed and compacted in layers.

Drainage Performance and Water Management

MOT Type 1 Recycled Sub Base provides controlled drainage rather than free drainage. The presence of fines reduces void space and limits water movement through the layer.

The material should not be used where rapid drainage is required. Drainage performance depends on correct formation preparation, subgrade permeability, and overall pavement design.

Consistency and Recycled Content Characteristics

As a recycled product, composition varies between production batches. Material is processed to remove contaminants and oversized particles. Colour, texture, and constituent proportions vary depending on source material.

Compliance and Standards

The product is supplied in accordance with the Type 1 sub base specification. It is commonly referenced within the Specification for Highway Works. Compliance relates to grading, compaction performance, and load bearing behaviour rather than appearance.

Frost Resistance and Environmental Exposure

MOT Type 1 Recycled Sub Base is suitable for use below finished surfaces and protected pavement layers. It is not intended for exposed final surfaces and should always be covered by an appropriate wearing course.

Frost resistance is dependent on correct installation, drainage control, and surface protection rather than the sub base material alone.

Suitability and Usage Limitations

Suitable For

• Driveway and access road sub bases.

• Pavement and patio foundations.

• Car park construction.

• Hardstanding build ups.

• Road and footpath sub base layers.

• Temporary construction access routes.

Not Suitable For

• Decorative surface finishes.

• Drainage layers requiring free flow.

• Exposed final wearing surfaces.

• Applications requiring colour consistency.

• Unbound surface use without cover.

Application Decision Table

Common Alternative Names

0-40mm MOT Type 1 Recycled Sub Base is also referred to as:

• Recycled Type 1

• Recycled MOT Type 1

• Crushed concrete Type 1

• Recycled sub base

• Class 1 recycled sub base

Terminology varies by supplier, but grading and performance criteria remain consistent.

Recycled Type 1 vs Primary Type 1

Recycled Type 1 Sub Base vs Clean Stone Sub Base

Recycled Type 1 Sub Base and clean stone sub base are both used below trafficked surfaces but perform different structural and drainage roles. The key differences relate to fines content, compaction behaviour, and water movement.

MOT Type 1 Sub Base vs MOT Type 3 Sub Base

MOT Type 1 and MOT Type 3 are both unbound sub base materials defined by grading and fines content. The difference lies in drainage performance and suitability for permeable construction.

Suitability Under Block Paving and Bound Surfaces

0–40mm MOT Type 1 Recycled Sub Base is suitable for use beneath block paving, concrete paving, asphalt, and other bound surface finishes. When correctly compacted, it provides a stable and load-distributing foundation layer.

It is not intended to act as a bedding layer. A suitable laying course material should be installed above the sub base in accordance with the surface specification.

Quantity, Coverage and Ordering Guidance

Coverage depends on required compacted depth and ground conditions. As a general indication, one tonne of 0–40mm MOT Type 1 Recycled Sub Base typically covers a smaller area as installation depth increases.

Buyers should calculate quantities based on required sub base thickness and allow for compaction and site tolerances. Trade Supermarket supplies material by weight or volume only and does not provide installation or coverage guarantees.

Trade Supermarket - UK Supply and Hire Platform

Trade Supermarket is a UK-based platform supplying plant hire, aggregates, and building materials for a wide range of project types nationwide. Products and services are structured in line with recognised UK classifications and standard supply and hire practices.

What Sets Trade Supermarket Apart

1. Unified Platform Structure: Hire services, aggregates, and building materials are all managed through one unified system instead of separate suppliers.

2. Classification-Led Organisation: Products are shown using standard UK grades, categories, and typical use-cases to help buyers choose accurately.

3. Defined Supply Scope: The platform focuses on supplying materials and equipment in a clear, straightforward way, without adding design or installation services.

4. Use-Case Neutral Positioning: Products are suitable for home, commercial, and large-scale projects without assuming a specific type of customer.

5. Consistent Operational Standards: All product categories follow clear, uniform processes to ensure a steady and reliable experience every time.

Supply and Delivery Responsibility

• Material Variation: Aggregates are natural or recycled materials and variation in colour, shape, and composition can occur between sources and deliveries.

• Quantity and Coverage: Materials are supplied by weight or volume as ordered. Coverage, yield, and performance are influenced by application method and ground conditions.

• Delivery and Site Access: Delivery requires suitable access for the selected vehicle type. Clear access, adequate space, and stable ground conditions must be available at the delivery location.

• Offloading Conditions: Materials are offloaded at ground level only. Placement, spreading, or installation services are not included as part of supply.

• Returns and Surplus Material: Bulk aggregates are non-returnable once delivered. Customers should ensure quantities are calculated accurately before placing an order.

• Supply Scope: Supply is limited to the provision of materials only. Product selection, suitability assessment, and installation remain the responsibility of the buyer or appointed contractor.