What’s with those ghostly gray stains on the outside corners of the ceiling and walls? The stains outline the stud framing, and they even seem…
In recent years, I have investigated numerous complaints of black or gray stains in homes. These may be geometrically shaped stains that outline exterior wall…
QUESTION: We have a natural fireplace, not gas. Can you tell us the maintenance we should be doing on our fireplace? What is the maintenance…
QUESTION I think I have soot stain problems in my house after reading about them on your website. I have all-electric house heating, made up…
What causes “shadowing” on house walls? I always chalked it up to soot from candles, but I recently had a realtor call me about a…