Posted on: 15 January 2019
If you have an asphalt shingle roof and want to prevent serious damage across the roof, especially as it ages, then you need to worry about issues such as dry rot. If you are unfamiliar with dry rot, then keep reading to learn what it is and how it can be prevented.
What Is Dry Rot?
Dry rot, or roof rot, is an issue that occurs when fungus infests the building materials that cover your roof. It can develop across the wooden beams, the shingles, and the deck of the roof. And the fungus may start forming in the upper, middle, or lower levels of the roof and can then spread out. The fungus does form in the presence of moisture, like other types of fungi and mold. The fungus itself looks dry and powdery though, which is the reason for its name.
The rot will make shingles and wooden materials brittle and weak. They will crack, crumble, and break if pressure is placed on them, and the roof is likely to sag in any areas where the fungus has taken hold.
If the fungus is trapped under one or several layers of shingles, then it may be impossible to see the rot itself until the roof is damaged. At this point, you may need a full roof replacement with the removal and rebuilding of the lower deck. This is extremely expensive and one of the reasons why it is best to prevent the rot before it becomes a real issue.
How Can Rot Be Prevented?
One of the easiest ways to prevent dry rot is to make sure that your roof is highly ventilated. While a leak can lead to the growth of fungus, it is often the formation of condensation along the underside of the deck that directly leads to the issue. So, make sure that the appropriate roof vents are added to the space, along with humidifiers and other moisture control methods.
You also want to make sure that your roof is solid and without any damage. Water will often leak around the edges of the roof, the upper ridge, and in any area where flashing is installed. These areas need to be inspected every one to two years to ensure that they remain intact. If damage is noted, then that area should be repaired as soon as possible. Your roofer may need to pull up some shingles and roofing felt to check for rot, and this will extend the repair area, so keep this in mind.
If you want to know more about roofs and the formation of dry rot, speak with a home roofing professional.Share