Low-priced stock that sells at less than $1.00 per share. Often highly-speculative and volatile, such as start-up mining companies. While, in general, penny stock are considered high-risk securities, some penny stock mature into less-speculative investments. All penny stock are traded over-the-counter.
In its natural form, cork is also a very good fire retardant, although cork dust is actually extremely flammable (because here the cell structure has been broken down). Impermeable: Cork has a magic chemical in its cell membrane that makes it completely impermeable to liquids and gases.
Cork spray is like a thermal blanket wrapped around your building and it has a thermal conductivity rating of 0.086, stucco is 01.00. Cork is flexible, mould reststant, bug and rodent resistant, Color fade is 1% / year (paint and stucco is up to 10% / year). It has an 18 decibel sound rating. Cork spray is less expensive than stucco.