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Wood Decay Can Silently Damage Your Home

Wood decay can be a big problem for both new and experienced homeowners but particularly plagues those of us who live in the often damp Pacific Northwest. Despite its colloquial name, dry rot is most often caused by communities of fungi growing in wood with high moisture saturation. Understanding how and where rot or wood decay takes hold can help property owners recognize and minimize future damage to their homes. Not every carpenter is trained in dry rot repair because it’s not an easy task, and you have to know where to look and how far. Before hiring a dry rot contractor, be sure they are skilled in all aspects of the job.

There Are Two Types Of Wood Rot

Two types of cellulose-eating fungi account for most of the damage described as dry rot. Brown rot turns lumber made from pine and fir trees into blocky, cracked wood. White rot, which affects mostly hardwoods, turns solid wood into splintery pulp by breaking down both cellulose and lignin.

Most fungi need water, food, oxygen, and temperatures above about 40°F. If we can take just one of these factors away, we can significantly affect the ability of white and brown wood rot to grow.

The Wood In Your Home Is Food For Wood Rot

In the eyes of the rots (yes, personification), wood is food. The same rigid sugars and proteins in trees that we use to build structures are a convenient and abundant source of energy for microscopic organisms. We can treat wood with chemicals and sealants to make it less appealing to the rots, but treated wood can be costly.

Lumber far enough below ground is usually safe from dry rot. Still, unless you’re Bilbo Baggins, it is pretty hard to keep oxygen from surrounding your structure. Temperatures in Portland are pretty consistent too, so temperature control might also be out when it comes to tackling dry rot.

Luckily, the construction industry has spent the last century honing weatherization products. From high tech water-resistive barriers to long-lasting calking and siding, there is a weatherization solution for every house.