8 Cotton Duck Canvas Fabric – Natural 48″ Wide | Heavyweight 18oz Duck Cloth
Our 8 cotton duck canvas fabric in Natural – 48″ Wide is an ultra-heavyweight 18oz cotton duck cloth made from undyed, unbleached 100% cotton. Designed for rugged industrial, artistic, upholstery, and utility applications, this heavyweight canvas features a durable plain weave double-filled construction that delivers exceptional structure, abrasion resistance, and long-term performance.
The versatile 48-inch width makes this fabric ideal for floor cloths, director’s chairs, heavy tote bags, utility covers, wall panels, industrial sewing, upholstery projects, workshop applications, and rugged sewn products. The narrower width is easier to handle during fabrication while still offering excellent coverage for medium-to-large projects.
The Natural color highlights the authentic raw beauty of cotton canvas with warm organic tones and subtle cotton flecking naturally present in unbleached cotton fibers. Because the fabric is left undyed and unbleached, it is also highly sought after for custom dyeing, painting, printing, waxing, scenic art, and specialty finishing applications.
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 durability than lighter duck fabrics, making it ideal for applications requiring rugged structure and heavy-duty performance.
Natural 8 duck remains a favorite among artists, upholstery shops, DIY makers, industrial fabricators, scenic designers, outdoor brands, and utility sewing manufacturers because of its versatility, authentic raw cotton appearance, and exceptional durability.
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
- 48″ wide canvas — versatile width for upholstery and utility projects
- Undyed & unbleached cotton — authentic natural canvas appearance
- 100% cotton construction — durable natural fiber canvas
- Plain weave double-filled construction — dense and abrasion-resistant
- Excellent for dyeing & painting — ideal for custom finishing projects
- Light DWR finish — helps resist minor stains and dirt
- FR treatment available — fire retardant treatment available upon request
- Sold by the yard or roll — ideal for production and manufacturing
Project Ideas
- Floor cloths and painted canvas rugs
- Director’s chair seat and back replacements
- Heavy tote bags, duffle bags, and utility gear
- Industrial covers and workshop applications
- Rustic upholstery and wall coverings
- Custom dyed, painted, waxed, or printed canvas projects
- Tool bags, aprons, and handmade artisan products
Specifications / Information
| Category | Double Filled Numbered Duck, Cotton Duck Fabric, Heavyweight Canvas |
| Color | Natural (Undyed & Unbleached) |
| Fabric Content | 100% Cotton |
| Duck Number | 8 Cotton Duck |
| Fabric Width | 48″ — 1 Linear Yard = Approx. 48″ 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. Natural cotton canvas may vary slightly in tone and flecking from lot to lot. |
* Because this fabric is undyed and unbleached, slight natural variations, cotton flecking, and shade differences are considered normal and part of the authentic character of natural cotton canvas. We recommend ordering a sample swatch before large production runs.
