Abstract: The invention relates to a sheet formed as a spacer means for creating air gaps, e.g. between roofing insulation and a roof. The sheet (1) is corrugated and is resiliently compressible transverse to the longitudinal direction of the corrugations (7,8).

Abstract: The present invention relates to a noise shield including a massive shield wall and an attachable absorbent unit on the shield wall. Thus the noise shield can be used with the absorbent unit along the parts of the road where you do not want reflections of the noise which you want to reduce and without absorbent unit along the parts of the road where you just want a reduction of the noise.The noise shield is constructed of posts, which are anchored in the ground. Between these posts are mounted support beams. The shield wall consists of shield modules. Each shield module consists of a plank panel, which is mounted on a frame, the plank panel functioning to reduce noise. Furthermore, into the cavity of each shield module; an absorbent unit can be inserted therein, which includes a frame and a panel. A noise shield can be constructed along a part of a road by anchoring the posts in the ground, mounting the support beams thereon and placing the prefabricated shield modules between these posts and support beams.