Today was the day, brave pill taken, ladder out. This canvas is coming off today.
So first, as mentioned above, I decided the best thing to do was release the bottom of the canvas to take the tension off the top and make it easier to pull off. I'm about 10 screws down one side when something dawns on me - the screws, and the part of the metal frame they go through, are below the bottom of the canvas. They aren't holding the canvas on, they're holding the frame to the van!! Ok it's not that big a deal, the side of the frame I'm working on doesn't move in the slightest as it appears to be bonded down with something immensely strong, so the screws are probably just an extra precaution, or maybe even just to hold it in place while the bonding compound cures. So all the screws back in and I'm absolutely baffled again, back to square one.
There's no metal trim around the bottom like the one at the top so I went round the van again, looking for a gap in the canvas that I knew wasn't there. And then... I saw this...
And it suddenly dawned on me what's going on here. So I grabbed one end and pulled...
And kept pulling all the way round. Yes the edge of the canvas is just tucked into the groove and the rubber sealing strip is just pushed into the channel behind it to secure it in place, and with it in out of the way, the bottom of the canvas is free
Now I'm jubilant I've cracked this, and a search around the inside of the roof lying on my back turns up a tiny gap in the top strip exactly in the centre at the front, so pulling that out gives the same result
Here's a close up of how the two edges fit into the track
And as easy as that, the canvas is off!
After all those months of umming and arring and fretting about how I can get this done without damaging an extremely expensive vehicle, once I know what I'm doing the canvas is off in less than 10 minutes. So wasting no time, I whiz it off to a canvas repair place I've spoken to. I'm not going to name them yet as I did with the last one as that turned out to be a waste of time, but these guys are young, enthusiastic and competely free of BS so I have high hopes. They advised me not to have a new canvas as the tear, to them, was really small and they've repaired canvasses with far greater damage without hesitation, so a new panel will be put in on the side. In addition, they're going to cut out and replace the front section where the solar cables came through the canvas, and stitch in a canvas tunnel to hide the cables, like the one in the left hand corner where the reading light cables are fed. The price for this was £180 and will be ready in 3 weeks.
Without the canvas there, access to some parts of the top is massively improved and I was able to get in and have a good clean while I had chance. The reason the solar cables will no longer be passing through the canvas is that I can now get to the top of the inside roof and feed the cables through behind the metal strip, after dremelling a slight indentation in the top, and then down the inside of the canvas inside the tunnel they're making. As a result, the appearance of the solar cables will be neater inside and out, and will remove the risk of leaks where the gland was sealed through the canvas in future (though there was absolutely no sign of that happening).
Absolutely buzzing how well that went, beers will be drunk tonight even though it's a school night