We've been asked several times about the best ways to softwash a canvas canopy to remove green and black staining.
We've used Benz Lightning Cleanze on canvas at a dilution of 10:1 but we only suggest using it as a “rescue” cleaner on old canvas that is in a very bad way.
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You need to be very careful when softwashing canvas because:
1. Treatment could change the colour. A small unseen test patch will tell you what the results will be. It all depends on the condition of the canvas and if the material has a coating.
If the canvas has a coating then it will more likely to be okay to softwash.
2. Lightning Cleanze could potentially damage natural fibres like cotton and hemp. This is especially true if used to regularly maintain canvas.
Over time the stitching and canvas fibres may start degrading.
So to reduce the possibility of damaging the canvas, keep the contact time of Lightning Cleanze to a minimum and rinse thoroughly.
3. Benz Bio Cleanze would be our preferred choice for cleaning canvas, especially for repeated maintenance treatments.
You may need to spray it with a water-proofing agent following cleaning. Waterproofing agents for canvas are often added during manufacture but wear off over time and because of natural weathering and repeated cleaning.
Bio Cleanze will take a longer time than Lightning Cleanze to work. Either spray it on and let natural weathering clean the canvas, or give it a very light power washing after a week or two, followed by a repeat application to protect from re-colonisation.
We hope you found this information helpful and inspires you to succeed in softwashing.
Ben, Leo & Fiona
Clear and easy to read – with loads of photographs showing the principles of softwashing in action. This fully illustrated paperback explains the practical how-to of softwashing in a straightforward way that's easy to understand.
The practical knowledge contained within its pages comes from several years trial and error experience.
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