-Sound absorbing qualities

-sustainable and renewable

-hyper allergenic 

-Non-absorptive 

-Heat and fire resistant

-Can only be harvested by hand. Harvesters are the highest paid agricultural workers in the world.

-Cork forests absorb up to 14 million tonnes of C02 each year, due to cork harvesting.

Cork is looking like the most likely option for the shelf. I am planning to use both cork and spruce, layering them together, to create more material, and keep the price down.