sunbrella mildew stains

[CarlF]

After 30 years of using Sunbrella for bimini's and dodgers, I switched to Stamoid. Mildew and bird poop just wipe off. The stains can't get down into the weave.

After 5 years wintering in the Bahamas the Stamoid is looking much better than the Sunbrella cockpit cushions done at the same time.

 

[thirsty boy]

The weather has allowed me one day to work outside. I laid the canvas out flat on a plastic tarp and washed it with a mixture of 3 gal. water / 2 cups bleach / 1/2 cup mild laundry soap. After the wash, I folded it up and kept it soaking for 1 hour before the rinse. It came out spotless, all mildew stains gone. I have never used bleach before out of fear, but it has never been so clean. Manufacturers instruction have never worked an high priced cleaners have never done such a good job.

 

[caltexflanc]

The weather has allowed me one day to work outside. I laid the canvas out flat on a plastic tarp and washed it with a mixture of 3 gal. water / 2 cups bleach / 1/2 cup mild laundry soap. After the wash, I folded it up and kept it soaking for 1 hour before the rinse. It came out spotless, all mildew stains gone. I have never used bleach before out of fear, but it has never been so clean. Manufacturers instruction have never worked an high priced cleaners have never done such a good job.

So I take it you don't have Sunbrella?

https://www.sunbrella.com/en-us/how-to-clean/clean-sunbrella-marine-canvas

 

[Rusty Scupper]

A while back someone told me hydrogen peroxide will clean mildew stains on canvas. I picked up a gallon jug of 3% on e-bay for $16.00 with free delivery. Next time I can get to the boat and it's not raining I'll spray the after deck awning and see what happens. I'll post the results before and after.