If the pressure-treated lumber was manufactured prior to a certain year, chances are it does By Devin Pratt The best time to stain your deck is when temperatures are between 50° F and 90° F with ...

Wood stains are a must for older decks for health reasons, too. Before 2004 most decks were made of lumber pressure-treated with chromated copper arsenate (CCA) to fend off rot and insects.

The Washington State Department of Ecology reported in November that $472 million of CCA funds were spent during the fiscal year 2024. Of that, .1%, or $596,000, came from the air quality account for ...