40mm Drainage Rock – Loose Bulk Delivery
- Regular price
- $29.00
- Sale price
- $29.00
- Regular price
-
- Unit price
- per
Loose soil, mulch, gravel and decorative rock delivered to your driveway or curbside.
Delivery rates vary based on the products ordered and delivery location. Final pricing is calculated at checkout.
Delivery FAQs & Placement Information →
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40mm Drainage Rock Calgary | Loose Bulk Delivery
Improve water drainage with 40mm Drainage Rock, a clean, angular crushed aggregate designed for drainage applications. The open spaces between stones allow water to move through the material, making it suitable for residential and commercial landscaping, drainage systems and construction projects.
Order 40mm drainage rock by the cubic yard with convenient loose bulk rock delivery throughout Calgary and surrounding communities. This durable aggregate is commonly used for French drains, foundation drainage, retaining wall backfill and other applications requiring effective water movement.
Looking for other aggregate materials? Explore our Gravel, Sand & Aggregates Calgary collection .
Ideal Uses for 40mm Drainage Rock
- French drains and drainage trenches
- Weeping tile and foundation drainage systems
- Drainage backfill behind retaining walls
- Subsurface water management
- Drainage layers beneath suitable hardscape installations
- Utility trenches and construction drainage applications
Product Specifications
| Product | 40mm Drainage Rock |
|---|---|
| Aggregate Size | 40mm nominal drainage aggregate |
| Material | Clean, crushed drainage rock |
| Appearance | Natural grey aggregate tones; colour may vary |
| Stone Shape | Angular crushed rock |
| Primary Application | Drainage systems, trench backfill and water management |
| Order Unit | Cubic yards (loose bulk) |
| Coverage | Approximately 100 sq. ft. per cubic yard at 3 inches deep (planning allowance) |
| Delivery | Loose bulk by dump truck |
| Maximum Order | 10 cubic yards per standard delivery order |
| Service Area | Calgary and surrounding communities |
How Much 40mm Drainage Rock Do You Need?
Enter your project dimensions to estimate the cubic yards of 40mm drainage rock required. The calculator rounds up to the next half cubic yard for planning. For drainage trenches, use the trench length, width and intended rock depth.
Drainage Rock Quantity Calculator
Enter the length, width and planned rock depth.
Estimates are based on the volume of the area being filled. Actual material requirements may vary depending on trench dimensions, existing structures, drainage pipe displacement and site conditions. Standard delivery orders are limited to 10 cubic yards.
Working on multiple drainage trenches or a larger project? Use our Advanced Bulk Volume Calculator to estimate quantities for multiple areas.
40mm Drainage Rock Coverage Guide
One cubic yard of 40mm drainage rock provides approximately the following coverage at different installation depths:
| Rock Depth | Coverage Per Cubic Yard |
|---|---|
| 2 inches | Approx. 162 sq. ft. |
| 3 inches | Approx. 108 sq. ft. |
| 4 inches | Approx. 81 sq. ft. |
| 6 inches | Approx. 54 sq. ft. |
| 8 inches | Approx. 40.5 sq. ft. |
| 12 inches | Approx. 27 sq. ft. |
Coverage values are based on volume. Drainage systems should be installed to the dimensions and specifications appropriate for the project. Rock depth requirements vary depending on the drainage design.
Why Use 40mm Drainage Rock for Drainage Systems?
Unlike compactable gravel containing fines, 40mm drainage rock has open spaces between the stones that allow water to pass through the aggregate. This makes it useful for collecting and directing water within properly designed drainage systems.
Its angular shape helps the material remain relatively stable while maintaining spaces for water movement. Common applications include French drains, foundation drainage and retaining wall drainage backfill.
Proper drainage installation may also require suitable drainage pipe, filter fabric, appropriate grading and a designated water outlet. The rock itself does not replace the need for a properly designed drainage system.
40mm Drainage Rock Delivery in Calgary
Our 40mm drainage rock is delivered loose by dump truck throughout Calgary and surrounding communities. Material is typically unloaded on a suitable driveway or approved street-side area. Enter your preferred dump location and access instructions at checkout. Final placement is subject to driver discretion and site conditions.
Available delivery options and charges are calculated at checkout based on your address and order. Flex and Scheduled delivery may be available, with same-day service offered for qualifying loose bulk orders when scheduling and routing allow.
Standard orders are limited to 10 cubic yards per delivery. If you need two different loose bulk materials, eligible split-load delivery is available for up to 5 cubic yards of each material, with a combined maximum of 10 cubic yards. An additional $80 split-load fee applies to qualifying orders.
Review our Bulk Landscape Material Delivery Calgary guide for more information about delivery scheduling and unloading requirements.
Frequently Asked Questions About 40mm Drainage Rock
What is 40mm drainage rock used for?
40mm drainage rock is commonly used in French drains, weeping tile systems, retaining wall drainage, utility trenches and other applications requiring water to pass through an aggregate layer.
Is 40mm drainage rock suitable for French drains?
40mm drainage rock can be suitable for French drain applications when the aggregate size and drainage system design meet the project's requirements. Proper pipe selection, filter fabric and grading are also important.
What is the difference between drainage rock and road crush?
Drainage rock is designed to maintain open spaces between stones so water can pass through. Road crush contains smaller particles and fines that help it compact into a stable base. These materials serve different purposes and are not generally interchangeable.
How much 40mm drainage rock do I need?
Measure the length, width and required depth of your drainage area using the calculator above. One cubic yard covers approximately 54 square feet at 6 inches deep. Actual requirements depend on the drainage system dimensions and installation design.
Can I order 40mm drainage rock with another bulk material?
Yes. Eligible orders containing two different loose bulk materials can be delivered together as a split load. Each material must be 5 cubic yards or less, with a combined maximum of 10 cubic yards. An additional $80 split-load fee applies.
How is 40mm drainage rock delivered?
40mm drainage rock is delivered loose by dump truck and unloaded at a safe, accessible location. Delivery instructions are entered during checkout, and the driver determines whether the requested unloading location is suitable.
Is drainage rock delivery included in the price?
Delivery is calculated separately at checkout based on your order, delivery address and available delivery options.