Do You Know

What is Wood Rot?

Wood rot isn’t just an eyesore—it’s a serious problem that can weaken your home’s structure. If left untreated, wood rot, often referred to as dry rot, can cause floor joists to break down, leading to sagging or collapsing floors.

Dry rot is caused by a type of fungus that grows in damp, humid places like your crawl space. The fungus starts as tiny spores that grow and spread, destroying the strength of your wood, and leaving beams cracked and brittle.

If you’ve noticed bouncy or sagging floors, brittle wood, or strange growths on your support beams, call us today. Helitech Waterproofing & Foundation Repair can quickly identify and fix wood rot issues, protecting your home and your family’s safety. Call today for a free inspection.

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Wood Rot

Common Repair Methods

Dry rot treatment isn’t one-size-fits-all because every home is unique. However, there are two primary methods for addressing wood rot that can be tailored to your specific needs:

1. Reinforcing the Damaged Beam with a “Sister” Beam

This method, known as “Sistering”, is a cost-effective method to stabilize structural damage and prevent wood rot. We remove the damaged wood, treat it to stop fungal growth, and attach a new “sister” beam to restore your floor’s strength and integrity.

2. Replacing Floor Joists Entirely

For severe damage, we replace the affected boards by installing temporary floor jacks, removing the damaged joists, and installing new load-bearing joists. Once complete, the floor jacks are removed, ensuring a stable foundation.

To learn more about how we repair sagging floors, click here.

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Stop Wood Rot by Controlling Crawl Space Moisture

Replacing damaged boards is only part of the solution. To fully repair wood rot and prevent it from returning, it’s important to address the source of the problem—excess moisture in your crawl space. A complete solution includes a three-part system: a vapor barrier, a ventilation system, and a dehumidifier.

These tools work together to block moisture, improve airflow, and maintain healthy humidity levels. By removing the conditions that cause wood rot, you can protect your home’s structure and improve its overall air quality. Learn more about crawl space moisture control here.

My husband and I were very pleased with the professionalism of Helitech representative. He was very polite and courteous. I was impressed with his ability to explained a solution to our basement problem with a complete assessment.

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Chem S.

St. Peters, MO, USA

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