When I took over purchasing for our company in 2020, one of the first questions I got from a facilities manager was: "Is Sunbrella fabric washable?" We'd just invested in new awnings for our storefront, and after a season of pollen and bird droppings, they looked rough. I didn't have a good answer. I'd seen the marketing about how easy it was to clean, but I didn't know if that meant you could toss it in a washing machine or if it required a special process.
After five years of managing these relationships and processing roughly 60-80 orders annually for various supplies—including outdoor fabrics—I've learned the answer isn't a simple yes or no. It depends. Here's a practical, four-step checklist for cleaning Sunbrella fabric, based on what has actually worked for me and what the manufacturer's guidelines say.
Who This Checklist Is For
This is for anyone who manages or maintains items made with Sunbrella fabric: awnings, boat covers, outdoor furniture cushions, and shade sails. If you're an administrator, a facility manager, or a small business owner wondering how to clean this material without damaging it, this is for you. There are four steps, and the one most people skip is the one that prevents the most damage.
Step 1: Dry Removal (The Step Everyone Rushes)
The first step is simple but often ignored: brush off dry dirt, dust, and debris before you add any water. I've seen people—myself included—take a hose to a canvas boat cover and just blast it, only to smear mud into a paste. Use a soft-bristled brush or a dry cloth. For large items like awnings, a broom works.
This is the step that's easy to skip when you're in a hurry. But skipping it means you're essentially grinding particles into the fabric when you scrub later.
Step 2: Cold Water & Mild Soap (The 'Always Do This First' Clean)
For most routine cleaning—pollen, light dust, a bit of mildew starting on a shaded area—cold water and a mild soap are all you need. Mix a solution: one-quarter cup of mild liquid soap (like Woolite or a mild dish soap that doesn't have bleach) per gallon of lukewarm water. Use a soft-bristled brush or a sponge.
Important detail here: use cold water. Hot water can set stains, especially with solution-dyed fabrics. I learned this one the hard way when I tried to clean a coffee spill off a cushion with hot water. It didn't help. Actually, it seemed to make the stain more stubborn.
Scrub gently in a circular motion. Let the solution sit for about 10-15 minutes, but don't let it dry. Then rinse thoroughly with clean, cold water. This is critical: rinse until the water runs clear. Soap residue attracts dirt, which means you'll be cleaning more often.
Step 3: The Stubborn Stain Protocol (For Grease, Oil, & Wine)
If cold water and soap don't cut it, you move to step three. This gets into territory that's more about chemistry than general cleaning. For grease, oil, or sunscreen stains, use a degreasing dish soap (like Dawn). Apply it directly, scrub gently, and rinse.
For red wine or coffee, a mild bleach solution is actually safe on Sunbrella—this surprised me. Mix one cup of bleach (chlorine bleach, not non-chlorine) with one-quarter cup of mild soap per gallon of water. Apply, let it sit for 15 minutes, and rinse thoroughly. I'm not a textile expert, so I can't vouch for long-term effects at a molecular level, but from a procurement perspective, this is what the manufacturer's care guide says. I'd still spot-test in an inconspicuous area first. I wish I had a hard data point on how many washes it takes to affect color, but based on my experience, the solution-dyed fibers hold up remarkably well to this treatment.
For mildew stains: Wet the affected area with a solution of 50% water and 50% white vinegar. Wait 30 minutes. Then clean with the bleach and soap mix above. This is a trick I found on the Sunbrella care guide and it has worked consistently on awning fabric for me.
Step 4: Air Drying (The 'Don't Use a Machine' Rule)
Never put Sunbrella fabric in a commercial or home dryer. The heat can shrink the fabric or damage the acrylic fibers. Air dry only. For removable items like cushion covers, hang them or lay them flat. For fixed items like awnings or bimini tops, just leave them open to air dry. This takes 2-4 hours on a breezy day.
This step is one that feels inefficient. I get why people think a tumble-dry cycle is fine. But to be fair, the manufacturer's warranty explicitly excludes damage from machine drying. That's not something you want to test at scale if you're managing 15 pieces of outdoor furniture for a commercial property.
What NOT to Do: Common Mistakes I've Seen (and Made)
A few things to avoid, from my own experience and from watching suppliers mess up:
- Don't use fabric softener. It leaves a residue that attracts dirt and reduces water repellency.
- Don't scrub aggressively with a hard brush. You can abrade the surface. Soft bristles only.
- Don't pressure wash. I know it's tempting. It will blast the dirt off—but it can also force water through the seams and damage the coating. Hand-washing is safer.
- Don't use harsh chemicals like acetone or paint thinner. These can dissolve the acrylic fibers.
Washing 'High-Volume' Items: A Note on Cushions & Marine Canvas
For items that are in constant use (deck cushions, canvas boat covers, dog beds), I recommend a more frequent cleaning schedule—every 4-6 weeks during peak season. It's easier to maintain than to restore. For marine canvas in saltwater environments, the priority is rinsing with fresh water after every use, not just cleaning with soap.
The decision to use the bleach method on high-volume marine fabric is a risk vs. benefit calculation for me. The upside: eliminated mildew stains. The risk: potential fading if not rinsed enough. Calculated worst case: you need to re-dye or replace a cushion cover (prices vary, but a 20x20 cushion cover runs $40-120 depending on vendor, as of January 2025). Best case: fabric looks new. The expected value says go for it with proper rinsing, but the downside of ruining a set of eight matching cushions for a hotel deck feels catastrophic.
One last thing: if you're ordering new Sunbrella fabric for a project, ask for a care card to include with the shipment. It's a simple add-on for the vendor and saves you from fielding the same questions later. Our vendor consolidation project in 2024 standardized this across all our suppliers, and it saved our accounting team about three hours monthly in support tickets.
Cleaning methods based on Sunbrella fabric care guidelines, which I've linked internally for reference. Pricing for replacement cushions varies; verify with your supplier. For specific questions on historic or specialty-finish fabric, contact Sunbrella directly.