I have a Coleman Pop-up Camper bad water leak all canvas is water and mildue stained. Will your product re-color canvas. It is only stained on the inside of the trailer. The outside is a smooth leather like gloss finish.
From the sounds of it you'd need a few coats to improve the water proofing and the colour would sort the stains out.
It's $90.00 per litre and that will cover aprox. 6 sq/m depending on how porous it is.