Should PVC schedule 40 pipe and fittings continue to be permitted for combustion exhaust venting? You and I have come across PVC that has gone from white to many colored shades: from light yellow to ...

This multiple-part article series will discuss the basics, codes and standards, and the science behind chimneys. It will show how back drafting affects chimney performance, while explaining the ...

Q You have always said to open the crawl vents in the winter and close them in the summer. We had a pest control company tell us just the opposite. Don't know if it's the same for all regions, but I'm ...