Low density oriented strand boards and methods of manufacturing same

A method of producing an oriented strand board panel comprising:

• a) providing first wood flakes having a first thickness;
• b) providing second wood flakes having a second thickness, wherein said second thickness is greater than said first thickness;
• c) adjusting the moisture content of said first wood flakes to between 6 and 12 wt % and of said second wood flakes to less than 9 wt %;
• d) mixing said flakes with a resin;
• e) forming a first mat with said first wood flakes;
• f) forming a second mat, over said first mat, with said second wood flakes;
• g) forming a third mat, over said second mat, with said first wood flakes, whereby a three layer composite mat is formed;
• and
• h) pressing and heating said layers of mats in a press.