28mm Wash Rock – Loose Bulk Delivery
- Regular price
- $30.00
- Sale price
- $30.00
- 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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28mm Wash Rock Calgary | Washed Drainage Rock Delivery
Our 28mm Wash Rock is a clean, washed gravel designed for drainage and water management applications. With minimal fine material, this angular aggregate allows water to move through the spaces between stones, making it a practical choice for residential and commercial drainage projects throughout Calgary and surrounding communities.
Also referred to as washed drainage rock, 28mm Wash Rock is commonly used in French drains, drainage trenches, retaining wall drainage zones and other applications requiring free-draining aggregate. Available loose by the cubic yard, our wash rock can be delivered directly to your project by dump truck.
Browse additional drainage gravel and aggregates in our Gravel, Sand & Aggregates Calgary collection .
Ideal Uses for 28mm Wash Rock
- French drains and drainage trenches
- Weeping tile and foundation drainage systems where specifications permit
- Drainage backfill behind retaining walls
- Drainage layers in suitable landscape and hardscape installations
- Utility trenches and water management areas
- General landscaping and drainage applications
Planning a drainage system? Confirm the required aggregate size, grading, filter fabric and installation details for your project. Not every drainage system specifies the same stone size. This washed rock is not a replacement for a compactable driveway or paving stone base.
Product Specifications
| Product | 28mm Wash Rock |
|---|---|
| Nominal Size | Approximately 28mm |
| Material | Washed crushed gravel |
| Appearance | Natural grey tones; angular stone with natural variation |
| Aggregate Characteristics | Washed aggregate with minimal fines and open spaces between stones |
| Common Applications | Drainage trenches, French drains, retaining wall drainage and landscape water management |
| Order Unit | Cubic yards (loose bulk) |
| Coverage | Approximately 100 sq. ft. per cubic yard at 3 inches deep (planning allowance) |
| Delivery Method | Loose bulk by dump truck |
| Maximum Load | 10 cubic yards combined per delivery load |
| Service Area | Calgary and surrounding communities |
How Much 28mm Wash Rock Do You Need?
Enter your project dimensions to estimate the amount of washed drainage rock required. The calculator updates automatically and rounds up to the next half cubic yard for ordering.
Wash Rock Quantity Calculator
Enter your project length, width and required rock depth.
Estimates use the full volume of the installed aggregate, including spaces between stones. Actual requirements may vary with trench dimensions, ground conditions and installation. Quantities are rounded up to the next 0.5 cubic yard. Maximum 10 cubic yards combined per delivery load.
Planning several drainage trenches or irregular areas? Use our Advanced Bulk Volume Calculator for more detailed estimates.
28mm Wash Rock Coverage Guide
One cubic yard of loose 28mm Wash Rock provides approximately the following coverage:
| Rock Depth | Coverage Per Cubic Yard |
|---|---|
| 1 inch | Approx. 324 sq. ft. |
| 2 inches | Approx. 162 sq. ft. |
| 3 inches | Approx. 108 sq. ft. |
| 4 inches | Approx. 81 sq. ft. |
| 6 inches | Approx. 54 sq. ft. |
Coverage figures are volume estimates, not recommended drainage installation depths. Follow the required dimensions and specifications for your drainage system. For general planning at 3 inches deep, allow approximately 100 sq. ft. per cubic yard.
Why Choose Washed Rock for Drainage?
Washed drainage rock contains relatively little fine material compared with aggregates such as road crush. This leaves spaces between the stones that allow water to pass through the aggregate.
In a properly designed drainage system, 28mm Wash Rock can help create a free-draining zone around drainage piping or behind retaining walls. The stone itself does not replace proper grading, drainage outlets, suitable filter materials or system design.
For French drains, foundation drainage and retaining wall applications, the aggregate must be compatible with the pipe, filter fabric and installation requirements. Always confirm the specified size before ordering.
Although wash rock may also be used in some decorative landscaping areas, its main advantage is drainage performance rather than creating a compacted walking or driving surface.
Loose 28mm Wash Rock Delivery in Calgary
Order 28mm Wash Rock by the cubic yard with loose bulk dump truck delivery 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 unloading placement is subject to driver discretion and safe 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 routing and scheduling permit.
Orders are limited to 10 cubic yards combined per load. Eligible split-load delivery of two different loose bulk materials may be available by arrangement, with additional charges where applicable.
Review our Bulk Landscape Material Delivery Calgary guide for delivery scheduling and unloading requirements.
Frequently Asked Questions About 28mm Wash Rock
What is 28mm Wash Rock used for?
28mm Wash Rock is commonly used for drainage trenches, French drains, retaining wall drainage zones and other water management applications where clean, free-draining gravel is required.
What is the difference between wash rock and road crush?
Wash Rock contains minimal fine material and is used where water needs to move through the stone. Road crush contains a mixture of aggregate sizes and fines that help it compact into a stable base.
Is 28mm Wash Rock suitable for French drains?
It may be suitable for French drains when the system specifications permit this aggregate size. Confirm compatibility with the drainage pipe, filter fabric and installation design.
Can 28mm Wash Rock be used around weeping tile?
Washed aggregate is commonly used in foundation drainage systems, but the required stone size varies by system. Confirm the specified aggregate before ordering.
Can wash rock be used behind retaining walls?
Wash Rock may be used as drainage backfill behind retaining walls when compatible with the wall system's installation requirements. Follow the wall manufacturer's drainage and backfill specifications.
Is 28mm Wash Rock suitable for a driveway base?
No. Washed rock does not contain the fines normally required to form a compacted driveway base. Use an appropriately specified compactable aggregate instead.
How much 28mm Wash Rock do I need?
Use the calculator above to estimate the quantity required for your project. One cubic yard covers approximately 108 square feet at a 3-inch depth before installation variations.
How is 28mm Wash Rock delivered?
Wash Rock is delivered loose by dump truck. Enter your preferred unloading location at checkout. Final placement depends on safe access and driver discretion.
Is delivery included in the Wash Rock price?
Delivery charges are calculated separately at checkout based on your order and delivery location.