When cleaning the pop-top, ive found references to using 'soap flakes'.
Sorry to be a young imbecile but is this just Ye Olde Reference? Are we talking normal washing powder like used for clothes? And if so, I presume bog-standard biological washing powder like Persil is OK?
Or are Soap Flakes a specific product?
Thanks.

Soap flakes are pure soap. There are no added bio products or surfactants etc. This is to preserve the pop top fabric.

Lux soap flakes are the old brand, they look like white corn flakes when emptied out of the packet,

Boots, do there own as Lux is no more 425g for £2.69 according our "old" packet, worth doing properly as well, a clean canvas really sets off the Eriba

A trip to Boots it's is then!
I've just bought some 303 for afterwards, and relegated the Fabsil to re-waterproofing awning duties.
Some very useful tips, thanks folks.

the 303 cleaner is fabulous, used for many fabrics including the tilley hat,, although we removed our canvas last time applied cleaner on kitchen top then put in washing machine on cold
once happy was clean then sprayed with 303 water proofer and put outside to dry,air can take up to 72 hours although warmth does help speed process up
its hard work to do it on caravan but totally understand why xx
heres some ideas
http://blackmold.awardspace.com/kill-remove-mold.html

I was put off of 303 due to the fibreglass warning as I am too chicken to remove the pop-top! I used Autoglym cabriolet fabric hood cleaning kit which is a similar product with decent reviews. It hasn't removed the mould spots (don't have many apart from a group near the rear scissor hinge) but does appear cleaner overall. Haven't tested water repellency yet as it's still airing having finished yesterday afternoon, but previously the pop-top wasn't beading water when over sprayed during my spring clean.

What is 303 supposed do to fibre glass ? we have just cleaned our canvas using the cleaner, dried then reproofed with 303, we covered the roof with paper but of course some soaks through the paper or drips down from the canvas, I washed it off straight away with car shampoo and fairy in hot water then rinsed with clear water, so what damage can I expect? doe it make it go dull? or does it do some structural damage?
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Did you ever get rid of mould spots we have used mild bleach with soap flakes Eddie was too chicken to leave on for long before hosing off and allowing to dry mould still there now going to belt and brace re-proof with 303 but there seems to be two types of bottles for the same product. Not sure which one. Did you spray or brush on