Description
#8 Cotton Duck Canvas Fabric – Natural 36" Wide | Heavyweight 18oz Duck Cloth
Our #8 cotton duck canvas fabric in Natural – 36" 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-lasting performance.
The narrower 36-inch width makes this fabric especially practical for director’s chairs, utility bags, heavy tote bags, floor cloths, wall panels, industrial sewing, workshop projects, and smaller-scale fabrication applications. It is also an excellent option for projects where reduced material waste or easier handling is important.
The Natural color showcases the authentic raw beauty of cotton canvas with warm organic tones and subtle cotton flecking that naturally occur in unbleached cotton fibers. Because the fabric is left undyed and unbleached, it is also highly sought after for custom dyeing, painting, printing, waxing, 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, outdoor brands, scenic designers, and utility sewing manufacturers because of its versatility, 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
- 36" wide canvas — ideal for smaller fabrication 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
- Director’s chair seat and back replacements
- Heavy tote bags, duffle bags, and utility gear
- Floor cloths and painted canvas rugs
- Industrial covers and workshop projects
- Wall panels, acoustic panels, and rustic décor
- Custom dyed, painted, waxed, or printed canvas projects
- Tool bags, aprons, and artisan handmade goods
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 | 36" — 1 Linear Yard = Approx. 36" 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.
Frequently Asked Questions
What is 36" wide #8 duck canvas commonly used for?
36" wide #8 duck canvas is commonly used for director’s chairs, utility bags, workshop projects, floor cloths, industrial sewing, wall panels, and smaller fabrication applications.
What does undyed and unbleached canvas mean?
Undyed and unbleached canvas has not gone through bleaching or dyeing processes, allowing the authentic natural cotton fibers and warm organic tones to remain visible.
Can this fabric be dyed or painted?
Yes. Natural cotton duck canvas works exceptionally well for dyeing, painting, waxing, screen printing, and specialty finishing applications.
Does this fabric shrink?
Yes. This heavyweight cotton duck canvas has an approximate shrinkage rate of 10–15%, so pre-testing and pre-washing are recommended when shrinkage is a concern.
Why is #8 duck called chair duck?
#8 duck is commonly referred to as chair duck because it has traditionally been used for director’s chair seat and back replacements due to its heavyweight strength and durability.
Can this fabric be treated for fire retardancy?
Yes. FR treatment is available upon request for qualifying industrial, theatrical, commercial, and specialty applications.
Why are there natural flecks or slight shade variation in the fabric?
Because the fabric is unbleached and minimally processed, natural cotton flecking and subtle shade variation are normal and part of the authentic appearance.
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.
