Mud splatter - once the canvas is completely dry, most soiling can be easily brushed off. Any remaining marks can be removed. We have found that the best stuff to use is Ecover laundry liquid as it doesn't damage the proofing in the canvas. With a micro fibre cloth work away at stains and smears until they are gone.
Tree sap or Algae - There is no eco friendly answer that we have found, so our current best practise is to use a reputable weed killer, (Pathclear) spray over the affected canvas. Wait ten minutes then rinse this off with a light hosing (do not pressure wash as this will blast the proofing from the canvas).
For professional cleaning we recommend:
The Canvas Cleaning Company, based in Bridgwater, Somerset. Specialising in Lotus Belles, they commercially clean and waterproof canvas tents and can also offer a repairs service, as well as arranging collection and delivery.
The Canvas Cleaning Company are a subsidiary of Wild Hare Events, who hold a massive stock of our tents in the UK and supply boutique camping to some of the best known festivals in the country. They have perfected the system on their own stock and have also cleaned a number of my own tents, and for this reason, I can absolutely recommend them.
Please feel free to contact them to discuss cleaning of your Lotus Belles. Call Polly on (07855) 229568 or email firstname.lastname@example.org
Your canvas is treated to be waterproof, flame retardant, and rot proof. If you wash your tent thoroughly and regularly, you will wash off some of the treatment, and as such you will need to re-proof it with waterproofing solutions. You don’t need to do this every time you wash the tent, just one coat at the end of the season will be fine. Grangers Fabsil for cotton is our recommended waterproofing solution.