Yes. KBS Klean is very effective at cleaning canvas surfaces, including boat covers that have mold on them, and it lifts grease, dirt and grime along with it. Canvas is not metal, so start at a weak dilution rather than the heavy duty ratio, test an inconspicuous corner first, and rinse thoroughly before the fabric dries.
Suggested Approach on Canvas
- Mix at the lightly soiled ratio, 10 parts hot water to 1 part KBS Klean. Step up to 5 to 1 if needed.
- Test an inconspicuous area of the cover and let it dry before doing the whole thing.
- Shake well, apply the solution liberally, and wash the area for 5 to 10 minutes or as long as needed.
- Agitate with a soft bristle brush. Canvas takes a brush better than a painted panel does, but a scouring pad will fuzz the weave.
- Do not allow KBS Klean to dry on the fabric. Rinse thoroughly with water and let it dry.
Wear protective rubber gloves and safety glasses at all times.
Why Start Weak on Fabric
The directions state that effective dilution rates vary according to the type and degree of contaminants as well as the surface material. Canvas is a surface material with dyes, coatings and stitching in it, none of which are covered by a ratio chart written around soil level on metal. Working up from weak is the honest way to handle that.
Hotter water also does more for you than a stronger mix. The warmer the water used, the more effective and powerful the cleaning action of KBS Klean.
What This Page Does Not Claim
KBS publishes no canvas specific procedure, no dwell time for fabric and no dilution ratio written for textiles. What is published is that KBS Klean cleans canvas including boat covers with mold on them, which is the answer to the question asked. The dilution and method above are the documented metal ratios applied conservatively, plus the test first step that any cleaner on any fabric deserves. If the cover is valuable or has a manufacturer care label, follow the label.
Mold on Other Surfaces
KBS Klean is a concentrated industrial strength water based cleaner and degreaser. It does a strong job on mold, grease, dirt and grime generally, not only on canvas. Full product detail is on the KBS Klean product page.
Frequently Asked Questions: KBS Klean on Canvas
Still have questions about cleaning canvas with KBS Klean? Contact us for help.
