04/12/2021
Hello Everyone,
Let’s talk a little about mold-like substances found on ceilings and some reasons as to why this is happening. In today’s example, we will be examining a vaulted ceiling that shows significant signs of a mold-like substance. Just by looking at the photo, we see a few clues that could help us determine the cause(s) and how we can prevent this from happening in our homes. The first clue we see is that the mold-like substance is in sections, possibly separated by the wood found in the roof’s structure. This sign immediately tells us that there is likely an inadequate amount of insulation between the ceiling and the roof’s deck and shingles. We come to this conclusion because it may seem obvious that the space between the ceiling and roof covering is better insulated by the wood, hence the separation of mold-like substance. In the areas between the roof’s structure, heat transfer is taking place and causing moisture to occur.
Just like moisture always travels to dryness, heat always travels to cold. This is why insulation is very important in maintaining the integrity of our homes. An easier way to picture why moisture is forming on our ceilings is to imagine taking a cold bottle of water out of the fridge. Within seconds, the exterior of the bottle is covered with condensation. Without proper insulation, the same process of condensation occurs anywhere insulation is lacking. In the summer time with the air conditioner running, condensation will occur within the home where the heat of the exterior travels to the cool air of the inside of the house. On the contrary, in the winter time with the heat running inside the home, condensation will occur inside your walls and ceiling where the heat of your home travels to the coldness of the exterior.
Adequate insulation is the first line of defense to prevent heat transfer and condensation.
Home upkeep, inspections, and education is what we do here at Reveal Home Inspections. Our next post will discuss how those gigantic windows play a role in forming mold-like substances on this vaulted ceiling.
