Description
#8 Cotton Duck Canvas Fabric – Royal Blue | Heavyweight 18oz Duck Cloth
Our #8 cotton duck canvas fabric in Royal Blue is an ultra-heavyweight 18oz cotton duck cloth engineered for demanding industrial, utility, marine-inspired, and creative applications. Built with a rugged plain weave double-filled construction, this heavyweight canvas delivers exceptional durability, structure, abrasion resistance, and long-term performance.
The Royal Blue color delivers a bold rich blue appearance inspired by nautical canvas, collegiate colors, athletic gear, marine applications, and premium utility products. This versatile heavyweight canvas is ideal for duffle bags, heavy tote bags, floor cloths, director’s chairs, industrial covers, banners, awnings, upholstery, tool bags, theatrical staging, and rugged sewn products.
Often referred to as chair duck or duffle bag canvas, #8 duck is one of the heaviest numbered cotton duck fabrics available. It offers substantially more body and structure than lighter #10 or #12 duck fabrics, making it ideal for projects requiring rugged durability and long-lasting performance.
Royal Blue remains a popular color for marine-inspired décor, branded sewn products, sports applications, event staging, workshop gear, school projects, outdoor utility equipment, and statement upholstery pieces. The saturated blue tone provides strong visual impact while maintaining the classic rugged look of heavyweight cotton canvas.
Need FR treatment? This fabric can be treated for fire retardancy (FR) upon request for qualifying industrial, commercial, theatrical, or specialty applications. Minimums and lead times may apply.
Not sure if #8 duck canvas is right for your project? Browse our Cotton Duck Fabric collection, explore our cut & sew manufacturing services, or order a fabric sample here.
Key Features
- #8 cotton duck canvas — ultra-heavyweight 18oz duck cloth
- 100% cotton construction — durable natural fiber canvas
- Plain weave double-filled construction — dense and abrasion-resistant
- Royal Blue color — bold saturated blue utility canvas
- Chair duck & duffle bag weight — ideal for heavy-duty sewn products
- Light DWR finish — helps resist minor stains and dirt
- Excellent structure & body — ideal for industrial and utility projects
- FR treatment available — fire retardant treatment available upon request
- Sold by the yard or roll — ideal for production and manufacturing
Project Ideas
- Duffle bags, heavy tote bags, and athletic gear
- Director’s chair seat and back replacements
- Floor cloths, painted canvas rugs, and heavy art surfaces
- Industrial covers, tarps, and workshop applications
- Banners, event staging, and theatrical backdrops
- Awnings, marine-inspired décor, and outdoor projects
- Tool bags, aprons, and branded sewn products
Specifications / Information
| Category | Double Filled Numbered Duck, Cotton Duck Fabric, Heavyweight Canvas |
| Color | Royal Blue |
| Fabric Content | 100% Cotton |
| Duck Number | #8 Cotton Duck |
| Fabric Width | 60" — 1 Linear Yard = Approx. 60" x 36" |
| Weight | 18oz per Square Yard |
| Hand | Medium / Heavy |
| Weave Construction | Plain Weave Double Filled |
| Finish | Light DWR Finish for Stain Resistance (Not Waterproof) |
| Shrinkage | Approx. 10-15% |
| Roll Size | Maximum of 50 Yards Continuous |
| Fire Retardant | Not fire retardant as stocked — FR treatment available upon request |
| Care Instructions | To minimize shrinking, machine wash in cold water and tumble dry without heat or air dry. Avoid bleach. Heavy canvases soften and gain character after laundering. |
| Testing | Fabric should be tested for your specific requirements prior to cutting. No claims are allowed on processed goods. |
| Ordering | Please order enough fabric to complete your project. Dye lots may vary slightly and exact future color matches cannot be guaranteed. |
* Each color is a representation of our stocked color standard and may vary slightly by dye lot and production run. Bright or saturated colors may crock or bleed and should not be mixed with white or light colors. We recommend ordering a sample swatch before large production runs.
Frequently Asked Questions
What is Royal Blue #8 canvas commonly used for?
Royal Blue #8 cotton duck canvas is commonly used for heavy tote bags, duffle bags, banners, theatrical staging, floor cloths, industrial sewing, outdoor projects, and branded utility products.
Is Royal Blue canvas good for marine and outdoor projects?
Yes. Royal Blue is a popular color for marine-inspired décor, outdoor gear, awnings, and utility products because of its bold classic appearance.
Why is #8 duck called chair duck?
#8 duck is commonly called chair duck because it has traditionally been used for director’s chair seat and back replacements due to its heavyweight durability and structure.
Can this canvas be treated for fire retardancy?
Yes. FR treatment is available upon request for qualifying commercial, industrial, theatrical, and specialty applications.
Is this fabric waterproof?
No. This fabric has a light DWR finish for minor stain resistance but is not fully waterproof or water repellent.
How does #8 duck compare to lighter canvas fabrics?
#8 cotton duck is heavier, stiffer, and more abrasion-resistant than lighter canvas fabrics, making it ideal for demanding utility and industrial applications.
Can this canvas be painted or customized?
Yes. Cotton duck canvas works well with many paints, dyes, screen printing methods, embroidery, and decorative treatments.
Can I order a sample before purchasing?
Yes! Order a fabric sample here to review the color, texture, and weight before placing a larger order.
Warranty Information
| Weave Construction: | Plainweave Double Filled |
| Fabric Content: | 100% Cotton |
| Shrinkage | 6-8% |
| Finish: | Light DWR for Stains / Not Water Repellant |
| Color: | Royal Blue |
| Fabric Width (Inches): | 60" |
| Weight (per sq yd): | 18oz ** |
| Hand: | Medium-Heavy ** |
| Roll Size: | Maximum of 50 yards continuous |
| 1 linear Yard = Aprox. 60"x 36" | |
** Note: Each color is a representation of our stocked color standard and is subject to shade and weight variation. Bright or deep colors are subject to crocking and bleeding and should not be mixed with white or light colors in the same garment. No guarantees can be made regarding lightfastness or color transference during washing or cleaning. Fabric should be tested for your specific requirements prior to cutting as no claims are allowed on processed goods.
