Impact noise issue Acoustic insulation: a matter of heaLth The annoying effects of noise are well known. However people are less aware of the fact that the noise can have direct psychological consequences. Apart from basic loss of concentration, these psychological problems can trigger real health difficulties such as sleep disorders, stress, and anxiety. In severe cases theses problems can generate digestive disorders, high irritability and depression. - Equipment noises (inside the building) - Impact noises (sound generated by impact and carried through a structure; typically, footsteps, the slamming of a door, etc.) Impact noises resulting from a shock on elements of a structure which are propagated exclusively by this structure (walls, floors...) like the noise of footsteps, the movement on furnitures, the dropping of objects are very disturbing for the resident of this building. Causes:- Conception defects- Poor choice of floor covering (tiled floor laid directly upon a concrete screed) - Poor choice of the intermediate insulating layers between carrying elements and the floor (floating floor on a resilient layer with insufficient performance) - Installation defects - Sound bridges (puncturing of the resilient under layers with a hard material) - Renovation issues - change from resilient floor to hard floor which is less insulating

Acoustic solution for impact noiseA Legal requirement Neighbourhood noise like foot steps, movement of furniture and objects falling on the ground trigger a high number of legal disputes between neighbours or between contractors and architects. Each government establishes its own regulation imposing a maximum transmitted impact noise level (L’nw). For example, in Europe, the limit values are usually between 53 and 63 dB depending on country concerned. The underlayer separates the concrete slab from the floating floor. It transforms the floor into a mass-spring-mass system avoiding the impact...

Acoustic Glass Mat Semi-Finished product To be used under screed or wooden floor, the acoustic glass mat can be easily Laminated with bitumen or any other protective foil. The acoustic glass mats can also be used directly under dry floor construction such as gypsum boards. Adfors offers a full acoustic mat product range (from TOO to 450 g/m2 - in jumbo rolls) allowing you to reach the requirements of your national acoustic regulation. Thin acoustic glass mats offer a good impact insulation, a high pressure resistance performance and stable acoustic insulation over the years. They are compatible...

Velimat® Advantages • Ready to be installed • Easy to handle - Lightweight 12kg/roll • High, long-lasting acoustic performance • High, long-lasting pressure resistance • Heat resistant (compatible with heated floors) • Fire resistant (suitable for timber frame construction) • Tubeless product (less waste in site)