New polytunnel cover needed :-( supplier suggestions please

[moreteavicar]

Just noticed the cover on our poly tunnel is now in several pieces.
We have recently moved in so haven't used it yet. It was very ropey, with gaffer tape here and there.
It was only held down at the sides by bricks, which now the wind can get in through the top keep lifting off. How should the sides be anchored?

Any suggestions for suppliers of a new cover?
Tunnel is 25'6"x14'6".

Also, it is just over 6' high in the middle - I am 6'. is it possible to obtain extensions to raise it a little, as the cover is coming off anyway?

[veggiechicken]

What make is it?
You could ask the manufacturers if they do replacement covers.

[nickdub]

When I bought a poly-tunnel frame I also bought plastic sheeting separately - then when I put it up I mounted the frame on top of a small wall and made the end with the door in out of poly-carbonate sheet - not the prettiest construction ever, but it does the job and kept the cost down.

I've been looking for cheap corrugated plastic sheet to replace the roof with eventually as I'd like something more durable but haven't found any yet - I'm hoping for someone who is getting rid of an old sun room roof or similar on Ebay :-)