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Show How Paint Preserves Most people paint their homes for the sake of good looks. But houses should primarily be painted for the sake of preserving the wood, which Is very porous. When the wood was still In the tree state the pores were filled with sap, and when cut the sap died out, leaving the pores open. If the wood should be left in the unprotected unpro-tected state, minus Its mark, fungi and moisture soon would begin to rot and destroy It. So when painted, the paint penetrates the pores and forms, when dry, a tough, elastic coating, which is "anchored" to the surface by countless little "hooks" that extend Into pores of the wood, and this coating or film preserves the wood by protecting It from those things which otherwise would quickly and surely destroy de-stroy it. |