PETRALIGHT is an insulating material, which enriches unique stone wool features with a new one excellent ability to compression. The packing technology optimization worked out by PETRALANA SA has improved compression process. As a result there is up to 50% more insulating material per package in relation to standard  capacity. During unpacking process the stone wool PETRALIGHT product reverts to its declared thickness maintaining all excellent features of thermal, sound and fireproof insulation. Significant increase of compression. PETRALIGHT guarantees shipment at small expense and saving space while storing products.