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Repair Damaged Wood, Joists and Structural Beams

Save your home from structural failure with expert wood repairs designed to fix structural issues and stop rot at the source.

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Reinforcing Joists & Structural Beams, & Preventing Rot Damage

what's Damaging Your Floor Joists & Girders?

If Mother Nature is the cause of your damage, there can be many possible forces hard at work on your crawl space’s structural wood. Determining which one you’re dealing with can be difficult to do!

Sometimes, a wood surface can be virtually covered in mold, but will still show little evident structural damage. In other cases, the wood may appear to be strong and untouched, while subterranean termites have hollowed the wood out from the inside.

Before you can consider a permanent repair for your crawl space, you will need to address the moisture and humidity that feeds mold, rot, pests, and other unwanted forces in your crawl space. The key to this is to keep your crawl space dry by installing a crawl space vapor barrier system and by running a powerful crawl space dehumidifier system.

What is Wood Damage
Cantey Foundation Specialists

What Causes Wood Damage and Rot?

"Wet" Rot On Floor Joists & Girders

Also called “soft rot”, this fungus is known to break wet wood down into cellulose, which will significantly weaken and decompose the material.

When choosing between replacing and reinforcing joists that have been damaged, look carefully at the color of the wood.

Advanced damage will show up as darkening and shrinking of the wood. It will have a soggy, spongy appearance, and will show signs of prolonged moisture exposure.

Often, replacement of this wood will not be necessary. Instead, installing a sister beam and sturdy joist supports may be more than enough to address all present damage, and restore your structure to a stable condition.

If you see mold that is white and “fuzzy” growing on your wood, there’s a good chance that it’s surface-level mold only.

This type of fungi quickly grows all over wood surfaces in a humid environment, alarming homeowners but not usually amounting to significant damage. These fungi are only able to consume the sugars and starches present in the wood, and not the polymers in wood fibers that provide structural strength.

Appropriate protective gear and an EPA-approved cleaning agent can provide a good short-term solution for cosmetically damaging fungi species (some molds are harmful and/or toxic to inhale or touch).

Given warmth, moisture, and food, mold will always return. Addressing the source of moisture is a much better route to the permanent solution you’re seeking.

Also known as “brown rot”, this fungus will reduce the wood it feeds on into small, rectangular pieces, leaving a “red dust” of spores behind as it spreads.

While not quite as widespread as other forms of mold damage, dry rot results in severe structural damage to wood. According to a study originally published in the Official Journal of the International Biodeterioration and Biodegradation Society, a 1% decrease of the weight of wood can result in a 75% loss in the wood’s toughness, causing floor joists and girders to begin to crumble apart in a very short period of time.

Don’t be mislead by the name “dry rot” — it does need significant moisture (a minimum of 28-30% content within the wood).

Dry rot damage can be treated with fungicides (such as boric acid) or other mold treatments to eliminate problems. However, the best way to prevent dry rot and related fungi is to create a dry space.

Wood that’s been damaged by termites tends to be hollowed out along the grain and may look completely undamaged. Inside, you can find ragged-looking “galleries” (tunnels in the wood) that are lined with dried mud, waste, and soil.

Other signs mud-lined “tubes” in visible areas around wood, and the sound made by knocking on termite-damaged wood: which produces a hollow sound. Damage in plaster and drywall may appear as tiny, dirt-lined holes.

Each year, roughly 1 in 30 homes are infested by termites. Without annual pest inspections, infestations may continue for 8 years or more — and can mean extensive damage to girders and joists.

As you can imagine, the structural integrity of the wood can quickly become compromised.

Similar to termites, carpenter ants damage wood by hollowing it out from the inside. Unlike their counterparts, however, they do not eat wood — only build their nest inside it. As a result, damage done to wood by carpenter ants is generally far less extensive.

Carpenter ants can be distinguished from termites by their pinched-in abdomen, jointed antennae, and forewings that are longer than their hind wings.

Additionally, carpenter ant tunnels are smooth in appearance, where termite tunnels are rough. Carpenter ants will also leave their nest to forage and to pile “frass” (sawdust, insect parts, and pupil casings) in locations away from the nest.

Both carpenter ants and termites are moisture-loving creates, and are particularly attracted to moldy, rot-damaged wood.

The name “powderpost beetle” is a broad term used for several species of wood-destroying beetles that like to infest untreated wood that’s been exposed to humid, damp conditions.

Damage caused by these critters is the cause of more confusion than any other structure-infesting pest — an expert inspection is the best way to identify it.

Powerpost beetle larvae feed on wood cellulose, and will severely damage floor joists, girders, and other structural wood in 1-5 years. The wood they feed upon is reduced to a fine powder, which is deposited in tunnels below the surface of the wood.

Once fully developed, emerging adults will leave tiny, round holes in the wood — about 1/8″ in diameter. They will quickly mate, laying new eggs on or below the wood’s surface.

Common Issues Requiring Wood Repairs

Recognizing the signs of wood damage early is crucial to prevent widespread structural problems and costly repairs.

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The Best Solution For The Problem

Addressing wood damage effectively requires a dual approach. First, repairing the existing damage and then controlling the moisture that caused it.

Repairing Wood Joists & Girders

Comprehensive Inspection & Moisture Assessment

A Cantey Foundation Specialist will conduct a thorough inspection of your crawl space or basement to identify all areas affected by wood damage, assess the extent of deterioration, and, most importantly, pinpoint the sources of moisture and high humidity that are causing the problem. We also look for signs of pest activity.
01

Customized Repair and Moisture Control Plan

Based on the inspection, we will design a detailed plan that addresses both the existing wood damage and permanently prevents future occurrences. This includes recommendations for wood repair/replacement, structural support (SmartJack®), mold remediation, and a tailored crawl space encapsulation system.
02

Moisture Source Control

Before wood repair, immediate steps are taken to control or eliminate the moisture source. This could involve repairing plumbing leaks, improving exterior grading, or installing interior drainage systems.
03

Mold Remediation (if present)

Any visible mold or fungal growth will be safely and effectively remediated before structural repairs begin.
04

Wood Repair & Structural Reinforcement

Our skilled crew will carefully remove and replace severely rotted or damaged wood components (joists, beams, subflooring). For areas with weakened but salvageable wood, sistering or reinforcement techniques may be used. If floors are sagging due to the damaged wood, the SmartJack® support system is installed to permanently stabilize and potentially lift the floor structure.
05

Crawl Space Encapsulation

To create a dry, healthy, and protected environment, our team will install the CleanSpace® vapor barrier system, seal crawl space vents, and install a high-capacity dehumidifier to maintain optimal humidity levels year-round.
06

Site Cleanup

The work area is thoroughly cleaned, and all debris from the repair process is removed.
07

Why Choose Cantey to Repair Your Wood Damage?

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Comprehensive Solutions

We offer a holistic approach that not only repairs existing wood damage but also addresses and eliminates the underlying moisture conditions that cause it, providing a permanent solution and preventing recurrence.

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Experienced Specialists

Our team consists of highly trained and certified professionals who are experts in identifying, repairing, and preventing all types of wood damage and crawl space issues.

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Permanent Structural Repair

We use durable, proven solutions like the SmartJack® system to restore the structural integrity of your floors and home where wood damage has caused sagging.

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High-Quality, Warrantied Products

We utilize industry-leading products from Supportworks and Basement Systems, ensuring reliable, long-lasting results backed by comprehensive warranties.

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Improved Home Health & Value

Our solutions significantly improve indoor air quality, reduce allergens, deter pests, and protect your home's structural investment, leading to a healthier and more valuable property.

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Eliminates Structural Weakness

Repairs or replaces damaged wood, restoring strength, stability, and safety to your floors and home's entire structure.

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Prevents Future Damage

By controlling moisture and humidity through encapsulation, our solutions permanently eliminate the conditions necessary for wood rot, mold, and many insect infestations.

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Restores Level Floors

SmartJack® installation corrects sagging floors caused by weakened wood, improving the comfort, safety, and appearance of your living space.

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Deterrent to Pests

A dry, sealed crawl space is significantly less attractive to wood-destroying insects like termites and carpenter ants, as well as rodents.

Benefits of Our Wood Damage Solutions

Our Customers Say it Best

Ask about our financing options

Cantey Foundation Specialists offers flexible, easy to understand financing options for homeowners. During our in-house visit, your specialist will help you find the financing options that work for YOU!

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Rate

12.99% for 120mos

6 Mos

No Interest

No Payments

12 Mos

No Interest

With Min Payments

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What types of wood damage can you repair?

We repair various types of wood damage, including dry rot, wet rot, and damage caused by pests like termites, typically found in structural components like floor joists, beams, and subflooring in crawl spaces and basements.
While very minor, superficial wood damage might be a DIY task, extensive dry rot or structural wood damage requires professional assessment and repair. Improperly treated dry rot can lead to continued, hidden structural decay and more costly problems down the line. Furthermore, safely identifying and addressing the moisture source is crucial and often requires specialized knowledge and equipment.
The duration depends significantly on the extent of the damage. Minor repairs might be completed quickly, while extensive wood replacement combined with full crawl space encapsulation could take several days.
If only the damaged wood is replaced without addressing the underlying moisture problem, dry rot and other moisture-related damage will almost certainly return. Our comprehensive approach of repairing the wood and implementing robust moisture control (encapsulation, dehumidification) is designed to permanently prevent its recurrence.
Yes, wood that is damp or damaged by rot becomes soft and appealing, making it a prime target for various pests like termites, carpenter ants, and rodents, who can then cause further structural and cosmetic damage.

frequently asked questions about wood repairs

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