When wood is pressure treated, chemicals are forced into the wood to preserve it and make it resist rot, decay and insects. Three of the most common chemicals used to treat lumber are discussed below.
Knots are a natural feature of pressure-treated wood, occurring where a branch was connected to the trunk of the tree and showing as rounded features within the grain. Knots present problems when the ...
Do not burn treated wood waste, as it contains toxic chemicals. Treated wood is full of pesticides that contain harmful chemicals. Wood is “treated” (i.e. dipped, sprayed, or pressure-treated) with ...
Dip-treated timber offers limited protection as the preservatives only penetrate the surface of the wood. In pressure-treated timber, preservatives are forced deep into the wood, which offers ...