Most homeowners don’t notice dry rot until it’s too late.
By then, it’s already spread behind the siding or under the deck — quietly eating away at the wood that holds your home together.
At Roman Bros Construction, we see this every week across Sacramento and the Bay Area. The good news? You can catch it early and save thousands in repairs if you know what to look for.
Here’s how to spot dry rot, what causes it, and how professionals fix it right.
1. What Exactly Is Dry Rot?
Dry rot is a type of wood decay caused by fungus that thrives in damp, poorly ventilated areas.
Despite its name, it actually needs moisture to start growing. Once active, it spreads fast — breaking down wood fibers and turning solid boards into crumbly dust.
You’ll often find it in:
- Window frames and sills
- Deck beams or posts
- Siding near the ground
- Door trims
- Crawl spaces and basements
Left untreated, dry rot can weaken the structure of your home and even spread to new areas through airborne spores.
2. Signs You Might Have Dry Rot
Look for these warning signs during your next home walk-around:
- Soft or spongy wood: Press your finger or a screwdriver gently into the surface — if it sinks in, that’s a bad sign.
- Cracking or shrinking paint: Paint that bubbles or peels often hides rot beneath.
- Musty smell: Fungal decay leaves a distinct, damp odor.
- Orange or white spores: The fungus itself can appear like cotton wool or rust-colored dust.
- Sagging deck boards or siding panels: Rot compromises structural strength, making boards feel unstable.
If you notice more than one of these, it’s time to act fast.
3. What Causes Dry Rot in Sacramento Homes
Our local climate is a big factor.
Hot summers followed by wet winters create ideal conditions for trapped moisture, especially in older homes with wood siding or decks.
Common causes include:
- Leaky gutters and downspouts
- Poor caulking around windows or doors
- Sprinklers hitting exterior walls
- Decks or trim installed without flashing
- Lack of ventilation in crawl spaces
At Roman Bros Construction, we always look for the source of moisture first — fixing that prevents it from coming back.
4. How Professionals Repair Dry Rot
Dry rot repair isn’t just about replacing damaged wood — it’s about stopping the fungus from returning.
Here’s how our crew handles it step by step:
- Inspection:
We locate every affected area, including behind siding or under paint. - Moisture Elimination:
Fix leaks, improve drainage, or seal exterior joints to cut off the fungus’s water source. - Remove and Replace:
We remove all rotted material and replace it with treated lumber or composite boards. - Treat and Seal:
All exposed surfaces are treated with a fungicide and moisture barrier to prevent re-growth. - Restore and Finish:
Finally, we prime, paint, or re-side the repaired area so it blends seamlessly with your home.
The result? A fully restored structure that’s stronger — and longer-lasting — than before.
5. Why DIY Fixes Don’t Work Long-Term
Many homeowners try to “patch” dry rot with wood filler or sealant.
Unfortunately, that’s just cosmetic. The fungus remains alive beneath the surface and continues to spread.
A proper repair means cutting out the infection completely and rebuilding it with dry, treated materials.
That’s why hiring a licensed contractor like Roman Bros Construction is your safest and most cost-effective solution.
6. How to Prevent Dry Rot from Coming Back
A little maintenance goes a long way:
- Keep gutters clean and pointed away from siding.
- Re-seal joints, trims, and windows every few years.
- Ensure decks have proper flashing and ventilation.
- Check under sinks and around exterior doors for leaks after heavy rain.
- Paint or stain wood surfaces regularly — it acts as a moisture barrier.
We also offer annual inspections for homeowners who want peace of mind before the rainy season hits.
7. Why Homeowners Choose Roman Bros Construction
- Local Expertise: We’ve worked on hundreds of homes across Sacramento, the Bay Area, and nearby suburbs.
- Full-Service Contractor: From dry rot repair to full siding replacement — one call handles it all.
- Honest Pricing: Transparent quotes, no hidden fees, ever.
- Quality Craftsmanship: Our work lasts because we build it like it’s our own home.
“They fixed our dry rot and replaced our siding — the crew was professional, fast, and friendly. Highly recommend!”
— Karen L., Roseville, CA
Dry rot doesn’t fix itself — but catching it early can save you major repair costs later.
If you’ve spotted signs of damage around your siding, windows, or deck, call Roman Bros Construction for a free inspection.
We’ll find the cause, repair it right, and make sure your home stays safe and solid for years to come.
Roman Bros Construction — Sacramento & Bay Area General Contractor
📞 (916) 207-9400 | Request a Free Quote
Specializing in: Siding • Dry Rot Repair • Windows • Decks