Abstract: In one aspect, there is provided a sheet comprising a biodegradable film having a first surface and an opposing second surface; and an adhesive, wherein the adhesive is applied to the first surface and wherein the sheet has a peel force of between about 0.02 pounds per inch to about 0.15 pounds per inch, preferably about 0.03 pounds per inch to about 0.1 pounds per inch, further preferably about 0.07 pounds per inch.

Abstract: A tile clip for a pitched roof of laterally interlocked tiles is provided for restraining a tile against movement away from, and movement down, the roof. The clip is secured to a roof batten adjacent the lower end of the tile, on which batten rest tiles in a row below the row containing the tile, being overlapped by the said tile. The clip comprises first, second and third portions; the first portion being securable to the batten, without removing the tiles resting thereon, and extending up to the end of such tiles; the second portion extending from the first portion to the upper surface of the tiles resting on the batten; and the third portion extending from the second portion down the tiles resting on the batten along the join between the said tile in the row above and a tile laterally adjacent thereto, to the lower end of said tile.