Defeat Dry Rot this Rainy Season
Dry rot is a problem that can sneak up on you. You may not see it right away, but once the rain comes, it’s like flipping on a light switch, exposing everything. If you’re a homeowner, never ignore dry rot. It can cause serious damage to your home, and the longer you wait, the worse it gets. Here’s what you need to know.
What Is Dry Rot?
Dry rot happens when wood absorbs moisture for too long, leading to fungal growth and early decay that weakens the wood. Healthy wood is strong and resistant, but wood affected by dry rot has no supporting value. Its fibers are already loose and damaged, which means it soaks up water much faster. Once water gets in, it spreads quickly, making small problems much bigger.
How Does Rain Expose Dry Rot?
Rain is like a test for your home. It reveals the areas where water is getting in and causing damage. Here’s what to watch for:
• Fence posts falling over: Dry rot can make fences look fine when dry, but as soon as they get wet, they weaken and collapse. It takes no more than a little water and heavy wind to finish off an already failing fence.
• Leaky gutters and eaves: Water overflowing from clogged gutters often finds its way behind them, rotting the wood underneath shingle and flashing.
• Window damage: Wooden windows and insert-style windows are especially vulnerable. Once the caulking fails, water sneaks in, and the wood starts to rot quickly. Insert-style windows are more notorious for letting in large amounts of water as they have little water proofing support by default.
• Chimney leaks: Nails holding the flashing around chimneys can rust, letting water into the wood underneath.
These are just a few examples. By the time you notice water leaking into your walls or rooflines, the damage could already be extensive.
Why Small Problems Turn Into Big Repairs
There’s a Spanish saying: “Las Zorras pequeñas arruinan la viña.” Meaning, “The small
Fox ruins the vineyard.” This is said to remind us that small problems - though they don’t seem urgent- can cause great damage when left alone. And it’s especially true for dry rot. Dry rot doesn’t spread quickly—it works slowly and quietly. It starts on the outside, but by the time you see the damage, it’s often gone deeper into the structure. Dry rot can work its way into the framing of your home, the roofline, and even the foundation.
The worst part? Small leaks often go unnoticed. Unlike a burst pipe, which you can see and fix right away, dry rot creeps in slowly. By the time you catch it, the damage could already be serious—and expensive to repair.
How to Check for Dry Rot Yourself
• Grab something sharp, like a toothpick or your car key.
• Tap lightly on window trims, fences, and deck boards.
• If the tool pushes through the wood or the surface feels soft, you likely have dry rot.
• For decks, check underneath—dry rot often starts in the joists. Second-story decks are easier to inspect from below, but first-story decks may need a professional inspection.
Why You Need a Professional
If you think you have dry rot, don’t wait. Call us. Dry rot can look a lot like termite damage. Paint can also make it hard to identify. It takes experience to tell the difference and assess the full extent of the problem. We can do a thorough external and internal inspection at a reasonable fee. Catching dry rot early can save you thousands in repairs, so it’s well worth the cost.
Don’t Wait for the Rain. The sooner you deal with dry rot, the better. Small problems are easier (and cheaper) to fix than big ones. If you spot any signs of damage or suspect dry rot, schedule an inspection with us by calling 415-272-4555. A quick check could save your home from costly repairs down the road.
