20mm Limestone Rock Calgary | Loose Bulk Delivery
Our 20mm Limestone Rock is a natural crushed limestone aggregate featuring attractive light-grey limestone tones. Available by the cubic yard, this versatile landscape rock is ideal for garden beds, decorative borders, pathways and landscaping projects throughout Calgary and surrounding communities.
The angular shape of crushed limestone helps the stones settle together more firmly than rounded rock, making it a practical choice for decorative ground cover and landscape features. Its light natural colour provides an attractive finish around plants, patios, retaining walls and outdoor living areas.
Compare other available materials in our Gravel, Sand & Aggregates Calgary collection.
Natural Characteristics of 20mm Crushed Limestone
Our 20mm Limestone Rock is a natural crushed stone product supplied directly from the aggregate producer. The crushing process creates angular limestone pieces with natural variations in size, shape, colour and texture. The 20mm designation represents the nominal aggregate size, and individual particles may vary.
As with other crushed aggregates, limestone may contain smaller stone particles and fines produced during crushing, screening, loading and transportation. Additional handling and movement can cause some stone particles to break down further.
During transportation and stockpiling, smaller particles and fines can settle toward the bottom of the material. As a result, some areas of a loose limestone load may contain a greater concentration of fines than others. This is a normal characteristic of natural crushed aggregate products.
Freshly delivered limestone may also have a dusty appearance. Exposure to rainfall or rinsing generally removes loose surface dust, helping reveal the stone's natural colour and texture. Smaller particles and fines may remain within the material, but surface dust typically becomes less noticeable after exposure to the elements.
These natural characteristics should be considered when selecting crushed limestone for decorative landscaping applications.
Ideal Uses for 20mm Limestone Rock
- Decorative ground cover for garden beds and landscaped areas
- Landscape borders and edging around patios and walkways
- Decorative pathways and garden features
- Accent stone around retaining walls and outdoor living spaces
- Rock gardens and low-maintenance landscaping
- Residential and commercial landscape applications
Product Specifications
| Product | 20mm Limestone Rock |
|---|---|
| Stone Size | Approximately 20mm nominal size with natural particle-size variations |
| Material | Natural crushed limestone |
| Appearance | Angular crushed stone in light-grey natural limestone tones; colour, texture and size may vary |
| Natural Characteristics | May contain smaller particles, limestone fines and surface dust from crushing and handling |
| 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 delivery order |
| Service Area | Calgary and surrounding communities |
How Much 20mm Limestone Rock Do You Need?
Enter your project dimensions to estimate the cubic yards of loose limestone required. The calculator automatically rounds up to the next half cubic yard for planning.
Limestone Rock Quantity Calculator
Enter your project length, width and desired rock depth.
Estimates use loose material volume. Actual requirements may vary with grading, ground conditions and installation. Quantities are rounded up to the next 0.5 cubic yard. Maximum 10 cubic yards per delivery order.
Working on multiple areas or a more complex landscaping project? Use our Advanced Bulk Volume Calculator for more detailed material estimates.
20mm Limestone Rock Coverage Guide
One cubic yard of loose 20mm limestone rock provides approximately the following coverage at different depths:
| 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. |
For ordering, allow approximately 100 sq. ft. per cubic yard at a 3-inch depth to provide a small buffer. Coverage may vary with site conditions and installation.
Why Choose 20mm Limestone Rock for Landscaping?
The light-grey appearance of natural limestone provides an attractive contrast against lawns, garden beds and darker landscape materials. Its angular shape creates a textured decorative finish that works well around patios, retaining walls and landscape borders.
Unlike rounded decorative stone, crushed limestone has angular edges that help the material settle together. For garden beds, appropriate landscape fabric can help separate the stone from the underlying soil and reduce weed growth. Proper edging helps keep decorative limestone contained within the landscaped area.
This 20mm limestone is intended primarily for decorative landscape applications. For projects requiring a compacted structural base, choose an aggregate specifically designed for that purpose.
Loose 20mm Limestone Rock Delivery in Calgary
Our 20mm limestone 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 any access instructions at checkout. Final unloading 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.
Orders are limited to 10 cubic yards per load. If you need two different loose bulk materials, eligible split-load delivery may be available, with additional charges where applicable.
Review our Bulk Landscape Material Delivery Calgary guide for delivery scheduling and unloading requirements.
Frequently Asked Questions About 20mm Limestone Rock
What is 20mm limestone rock used for?
20mm limestone rock is commonly used for decorative garden beds, landscape borders, rock gardens, pathways and accent areas around patios and retaining walls.
What colour is 20mm limestone?
This limestone features natural light-grey tones that provide an attractive landscape appearance. Colour variations are normal with natural stone, and freshly delivered material may appear lighter or dustier before exposure to rainfall.
Does 20mm limestone contain smaller particles or stone dust?
Yes. Natural crushed limestone can contain smaller particles and fines generated during crushing, screening, loading and transportation. These particles may settle toward the bottom of stockpiles or become concentrated in certain areas of a loose load. This is a normal characteristic of crushed aggregate products.
Why does freshly delivered limestone look dusty?
Crushed limestone may have surface dust from the production and handling process. Rainfall or rinsing generally removes loose surface dust and helps bring out the natural colour and appearance of the stone. Smaller particles and fines may remain within the material even after rinsing.
Is 20mm limestone the same as washed decorative rock?
Not necessarily. Crushed limestone and washed decorative rock can have different processing methods and appearances. This 20mm limestone is supplied as a natural crushed aggregate and may contain smaller particles, fines and surface dust. Rainfall or rinsing can help remove loose surface dust and reveal the natural appearance of the stone.
How much 20mm limestone rock do I need?
Use the calculator above to enter your project length, width and desired depth. One cubic yard covers approximately 108 square feet at a 3-inch depth before allowing for installation variations.
Is limestone better than round rock for landscaping?
Both materials work well for decorative landscaping. Limestone has an angular shape and generally lighter appearance, while round rock has smoother edges and a more rounded natural finish. The best choice depends on the look and application you prefer.
Should I install landscape fabric beneath limestone rock?
Landscape fabric can help separate decorative limestone from the underlying soil and reduce weed growth in suitable landscape beds. Proper installation and edging are recommended.
How is loose limestone rock delivered?
Loose limestone is delivered by dump truck and unloaded at a safe, accessible location. Customers provide preferred unloading instructions at checkout, with final placement determined by the driver.
Is delivery included in the limestone price?
Delivery is calculated separately at checkout based on your order and delivery location.

