For floor constructions above existing floorboards, it is important that the floor is even, without significant differences in level. AGEPAN® Loose Fill is excellently suited for levelling uneven floors. AGEPAN® Loose Fill is manufactured from the natural raw material shale, in a special thermal process. AGEPAN® Loose Fill does not contain any chemical additives and is therefore a high quality, environmentally-friendly material with outstanding grain strength. Old floorboards must first be provided with an appropriate trickle protection.