I purchased a similar roll of bake o glide 9 years ago when we moved into a house with an Aga. Bake o glide was recommended for a number of uses and new to the Aga game I purchased a roll as well as some pre-cut shapes etc for baking trays. After 9 years a piece of about 30cm X 30 cm which lines a shallow tray, which had been in almost daily use for 9 years developed a crack; we use this particular piece to roast potatoes (just use 1 cal spray on the sheet first, place par-boiled potatoes onto it, spray them again and dust with salt) and for cooking things like oven chips, pizza, fried eggs etc, I felt that I should get a replacement and purchased this item.
It is simply fantastic, it just works and all the better if you use as little fat as possible and that's where the 1 cal spray excels. I cannot endorse this outstanding product enough. I can see a roll lasting a lifetime with careful use and certainly, apart from our 30 cm sheet, most of our other pieces from the original roll look as though they could easily do that too.
Easy to clean too, roll it into a loose rol and place it into the dishwashers. job done.