Can I use them in all the same ways as interior fabrics? Yes, you can; your imagination is the limit. Use them for furniture upholstery, decorative pillows and cushions, window treatments, shower curtains, table linens and more. Are they expensive?Outdoor fabrics tend to cost more than comparable indoor fabrics, simply because of their added features. As with interior textiles, designer versions, of which there are many, come with a higher price tag. However, you usually get what you pay for — a quality brand will most likely will last longer than a cheaper one.