Wood is made up of thousands of hollow cells, called cellulose fibers. It is bonded together with a natural glue called Lignin, and is bonded so tightly that it was once considered a single substance. No other building material is structured this way. A wood block just 1 inch square and 2 1/4 inches long can support 10,000 lbs. Actually, pound for pound, wood is stronger than steel.

Wood is a natural insulator. It would take a concrete wall 5 feet thick to equal the insulating value of 4 inches of wood. Wood insulates 6 times better than brick, 15 times better than concrete and an astonishing 1770 time better than Aluminum. Why is wood far superior in insulating? Wood cells contain millions of tiny air spaces, and air is one of the best insulators known. This is why a wood framed home will keep you warmer in the winter and cooler in the summer.

Last updated January 31, 2008
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