Unsure cause of yellow streaks on wall

[BC_Outdoors]

Hey from BC Canada, any idea what would cause yellow-looking streaks/staining on the canvas wall? And best recommended way to remove or treat? TIA

[internalvoice]

Greetings from Manitoba.


To me it looks like mildew.
was the canvas damp at all when it was closed up? Or did water get in when it was stored over winter?



Not sure what is available to treat it, but water proofing should be re-applied after treating/cleaning

[BC_Outdoors]

Thanks very much. It was like that when I bought it. When I opened it for the first time it seemed very dry inside. It’s quite prominent yellow, the picture really doesn’t show the extremity of it

[internalvoice]

You should be able to clean it. main thing is to also kill it off so it doesn't come back. If there is mildew be on the lookout for mold as well. Might be worth pulling the cover off the foam on that bunk to see if there is anything there. I washed my covers in the regular washing machine in cold water, tumble dried for a bit and then led them air dry the rest of the way. and they came out okay. They will shrink a bit, and it is a job and a half to get the foam back in. maybe others have some auggestions. My manual just says to use mild soap and water to wash yhe canvas, but that wont kill mold or mildew..

[RogerR]

I would recommend Concrobium to kill the mold. If you are not affected by the mold first brush and vacuum with a brush to remove dirt and loosen as much mold as possible. You can then try to get more with warm water but avoid detergents as they will remove oils and waxes that keep out the rain. After drying thoroughly apply Concrobium and let it soak in to kill the mold hidden down in the fibers of the canvas.

I would re-apply waterproofing and seam sealant after it was very dry.
Try this link: https://blog.whiteduckoutdoors.com/h...m-canvas-tents