40mm Montana Rainbow Rock – Loose Bulk Delivery
- Regular price
- $100.00
- Sale price
- $100.00
- 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 Montana Rainbow Rock Calgary | Decorative River Rock
40mm Montana Rainbow Rock is a natural decorative river rock featuring a colourful blend of brown, tan, grey and reddish earth tones. Its rounded shape and larger stone size create a distinctive landscape finish for garden beds, rock gardens, borders and outdoor features throughout Calgary and surrounding communities.
Also known as Montana River Rock or Rainbow River Rock, this approximately 40mm decorative aggregate offers a natural alternative to traditional grey gravel and single-colour landscape stone. Its larger size makes it particularly attractive for feature areas and decorative ground cover.
Available loose by the cubic yard, 40mm Montana Rainbow Rock can be delivered directly to your property by dump truck.
Why Choose 40mm Montana Rainbow Rock?
- Natural mixture of brown, tan, grey and reddish stone
- Rounded shape creates a smooth decorative appearance
- Larger 40mm size adds texture and visual interest
- Durable ground cover that does not decompose like organic mulch
- Complements plants, concrete, paving stones and retaining walls
- Suitable for decorative areas where water can pass between stones
- Available by the cubic yard for residential and commercial projects
Ideal Uses for 40mm Montana Rainbow Rock
- Decorative ground cover for garden beds
- Rock gardens and landscape feature areas
- Landscape borders and decorative edging
- Around patios, paving stones and retaining walls
- Dry creek beds and decorative swales
- Accent areas around trees and shrubs
- Residential and commercial landscaping
This larger rounded stone is intended primarily for decorative landscaping. It is not recommended as a compactable base or a stable surface for frequently travelled pedestrian pathways.
Product Specifications
| Product | 40mm Montana Rainbow Rock |
|---|---|
| Stone Size | Approximately 40mm |
| Material | Natural decorative river rock |
| Colour | Mixed brown, tan, grey and reddish earth tones |
| Shape | Rounded |
| Primary Use | Decorative landscaping and rock features |
| 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 load |
| Service Area | Calgary and surrounding communities |
How Much 40mm Montana Rainbow Rock Do You Need?
Enter your project dimensions to estimate the amount of decorative river rock required. The calculator updates automatically and rounds up to the next half cubic yard.
Montana Rainbow Rock Quantity Calculator
Enter the length, width and desired rock depth.
Estimates are based on material volume and rounded up to the next 0.5 cubic yard. Actual requirements vary with surface conditions and installation. Maximum 10 cubic yards combined per delivery load.
Calculating multiple areas? Use our Advanced Bulk Volume Calculator .
40mm Montana Rainbow Rock Coverage Guide
One cubic yard of decorative rock provides approximately the following coverage:
| 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. |
These are volume-based estimates rather than recommended installation depths for every application. For general planning, allow approximately 100 square feet per cubic yard at 3 inches deep.
Natural Montana Rainbow River Rock
Montana Rainbow Rock is known for its mixture of natural earth tones. Individual stones may feature brown, tan, grey and reddish colouring, creating a varied appearance across the finished landscape.
The approximately 40mm size creates a bolder decorative finish than smaller 20mm Montana Rainbow Rock. Larger rounded stones are particularly effective in rock gardens, dry creek beds and feature areas where the material can be appreciated from a distance.
The natural stone colour may appear richer when wet and lighter when dry. Because this is a natural aggregate, colour, size and shape may vary between loads.
Installing 40mm Montana Rainbow Rock
Prepare the area by removing weeds, debris and unwanted vegetation. Grade the surface as needed before spreading the decorative rock.
Landscape fabric may be used where appropriate to help separate the rock from underlying soil. Secure edging can help contain the rounded stones and maintain defined landscape borders.
Spread the material evenly to the desired depth. For larger 40mm decorative rock, approximately 3 to 4 inches may provide more consistent coverage, depending on the project and underlying surface.
This product is primarily intended for decorative landscaping. For engineered drainage systems, confirm the required aggregate grading and cleanliness before selecting a material.
40mm Montana Rainbow Rock Delivery in Calgary
Order 40mm Montana Rainbow 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 location. Enter your preferred dumping area and access instructions during checkout. Final placement depends on safe site conditions and driver discretion.
Available delivery options and charges are calculated at checkout based on your address and order. Flex and Scheduled delivery may be available. Same-day service may also be offered for qualifying loose bulk orders when scheduling and routing permit.
Orders are limited to 10 cubic yards combined per load. Eligible split-load delivery of two different loose bulk materials may be available, with additional charges where applicable.
Review our Bulk Landscape Material Delivery Calgary guide for delivery scheduling and unloading information.
Frequently Asked Questions About 40mm Montana Rainbow Rock
What is 40mm Montana Rainbow Rock?
It is a natural rounded decorative river rock featuring mixed brown, tan, grey and reddish tones. It is commonly used in garden beds, rock gardens and landscape feature areas.
What colours are in Montana Rainbow Rock?
The stone typically contains brown, tan, grey and reddish earth tones. Natural variation should be expected.
Is Montana Rainbow Rock the same as river rock?
Montana Rainbow Rock is a rounded decorative stone with a natural river-rock appearance. Its distinguishing feature is the mixture of earth-tone colours.
What is the difference between 20mm and 40mm Montana Rainbow Rock?
The 20mm material provides a smaller, more detailed decorative finish. The 40mm material uses larger stones that create a bolder appearance in landscape beds and feature areas.
What is 40mm Montana Rainbow Rock used for?
Common applications include decorative garden beds, rock gardens, landscape borders, dry creek beds and outdoor feature areas.
How deep should 40mm Montana Rainbow Rock be installed?
Approximately 3 to 4 inches may provide consistent coverage for many decorative applications. The appropriate depth depends on the project and surface conditions.
Is 40mm Montana Rainbow Rock good for walkways?
The larger rounded stones can move underfoot, making them less suitable for frequently used walking surfaces. They are better suited to decorative areas beside pathways.
Can Montana Rainbow Rock be used for drainage?
Water can pass through spaces between the stones, making the rock useful for some decorative drainage areas. Engineered drainage systems may require a specified washed aggregate.
Does Montana Rainbow Rock need landscape fabric?
Landscape fabric may help separate decorative stone from soil. Whether it is appropriate depends on the landscape design and underlying surface.
How much Montana Rainbow Rock do I need?
Use the calculator above to estimate your order. One cubic yard covers approximately 108 square feet at 3 inches deep before allowing for installation variation.
How is 40mm Montana Rainbow Rock delivered?
The material is delivered loose by dump truck to a suitable unloading area. Enter your preferred placement instructions at checkout. Final placement is subject to driver discretion.
Is delivery included in the rock price?
Delivery charges are calculated separately at checkout based on your order and delivery location.
Explore More Decorative River Rock
Compare 40mm Montana Rainbow Rock with smaller decorative aggregates and other landscaping stone in our Calgary Gravel, Sand and Aggregates Collection .