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Dry Rot & Brown Rot in Southern Florida Basements & Crawl Spaces

Dry rot damaging wood in Homestead

Damage from dry rot creates small, rectangular pieces of crumbling wood on the surface.

Dry rot damage is often mistaken as from a termite damage, due to the appearance of the damaged wood.

Dry rot (also known as brown rot) is one of the most severely damaging decaying forces on household wood in the world.

Approximately 20 billion board feet of timber are destroyed by wood rot in the United States each year-- far more destroyed wood than is damaged annually by fire!

Replacement wood used to repair damage caused by wood rot accounts for almost 10 percent of the annual wood production in the U.S. alone.

In the United Kingdom, dry rot problems have been credited for dealing about 150 million pounds worth of damage annually, and wood rot in general leads to about 17 billion dollars of damage each year in the United States.

N Square, Inc. has a long history of experience in eliminating, preventing, and controlling dry rot in homes throughout Florida, including Miami Beach, Boynton Beach, Lake Worth, Homestead, Delray Beach, Port Saint Lucie, Cape Coral and areas nearby.

If you have a dry rot problem in your home and would like more information, contact us by phone or e-mail today for a free dry rot control estimate!

What is Dry Rot & Brown Rot?

"Dry Rot" is a term most often used to describe a particular kind of dry, cracking, rotting wood. However, dry rot occurs because of a variety of brown rot species, most notably the "true" dry rot fungus known as Serpula lacrymans. It originally got its name from the thought that it did not need water to survive and used a fermentation process to survive. Research has long since been proven untrue, and it is now called, more appropriately, "brown rot", although the old name hangs on.

Dry rot needs much less moisture than other types of wood rotting fungi--a wood moisture content of at least 28-30% -- to survive. While there is no official proof on the subject, many contractors have observed that dry rot also will not grow on wood with too much moisture.

Protect Your Home From Dry Rot!

The Bad News
The Good News
  • While dry rot is not the most common type of rot, it can deal serious damage to your home and endure conditions that are too dry for other types of rot to thrive. In fact, up to a 75% loss in the toughness of the wood [PDF] is possible with just a 1% decrease in the wood's weight of the wood.
  • Dry rot fungus spores are present in most homes and can survive for several years, waiting for the right conditions to grow.
  • Dry rot can pull moisture from moist areas to dry areas. It grows through mortar, concrete, masonry, and behind plaster.
  • Despite its name, dry rot needs moisture to produce spores-- at least 28-30% moisture content within the wood with a relative humidity of 95% or higher. Most softwood timbers in dry homes, especially in the upper levels, have a moisture content of 12-15%.
  • Dry rot problems in basements and crawl spaces can easily be solved by controlling moisture by sealing and dehumidifying the space.
  • Treatment of the wood with fungicides and products such as boric acid are known to eliminate and prevent dry root fungi.
Wood severely damaged by dry rot damage in Port Saint Lucie

The USDA Forest Service reports that just a 1% decrease in the weight of dry-rot-damaged wood can lead to a 75% loss [PDF] of its the wood's toughness overall.

Identifying & Treating Dry Rot or Brown Rot Problems in Florida

A common first indication of dry rot in a home is the appearance of a "red brick dust".

This red dust is actually an accumulation of fungal spores that are covering the surface, waiting for the proper conditions to start to grow.

When Does Dry Rot Damage Occur?

An outbreak of dry rot commonly occurs several months after a household water event, such as flooding, bursting washing machine hoses, a failed water heater, or leaking pipes. In some cases, water or moisture may have been trapped in a building cavity as the home was being built.

Dry rot is also common in vented crawl spaces and basements with groundwater flooding. It's often not detected until the damage is already very significant.

Steps to Dry Rot Cleaning & Repair

  1. Remove Damaged Wood: All wood that shows decay or visible fungus should be removed, as well as all wood within one meter of the visible decayed material.
  2. Remove Materials Near Damage: Plaster, paneling, linings, and ceilings around the dry rot areas can also contribute to the damage and should also be removed.
  3. Clean The Area: Using a wire brush, clean off all surfaces, including metal and pipes, within 1.5 meters of the furthest edge of the infection. Clean up all dust and debris from the work.
  4. Kill Any Remaining Fungi: Apply a fungicide to all masonry, concrete, and exposed dirt in the area. Apply two coatings of fungicide to all wood surfaces within 1.5 meters from the damage.
  5. Rebuild: Replace wood rot infected timbers with fungicide-treated wood.

Preventing Dry Rot in a Basement: Remove all standing water sources, then install a plastic vapor barrier on the walls and floors. Install a self-draining dehumidifier powerful enough to dry the area. (At least a 100-liter model)

Preventing Dry Rot in a Crawl Space: Seal off all crawl space vents and door covers. Encapsulate the crawl space with a crawl space liner, then install a self-draining crawl space dehumidifier.

Dry Rot Alert!

Architect's Journal reports that dry rot can grow through damp mortar, concrete, masonry and behind plaster.

This makes remediation of dry rot complicated and expensive, and it can lead to future problems with dry rot if it is not treated properly.

Permanent Solutions for Dry Rot Problems in Your Basement or Crawl Space

N Square, Inc. can help you eliminate dry rot problems at their source. We can dry your basement or crawl space, eliminate flooding problems, and seal out humidity.

This not only eliminates dry rot problems, but also creates an environment that is inhospitable to mold, wet rot, and mildew, while helping to keep out termites, carpenter ants, cockroaches, crickets, and other household pests. Crawl space sealing products can also do double duty as insulation, providing you with added energy efficiency.

We offer FREE, no-obligation dry basement and crawl space quotes in our service area. We can answer all your questions and point out the sources of humidity and moisture in your home.

We service Florida, including Miami, Fort Lauderdale, Hollywood and nearby areas such as Hialeah, West Palm Beach, Naples, Boca Raton, Sarasota, Bradenton, Fort Meyers .

Serving FL including the Greater Miami area
Our Florida Service Area
Cities in Broward County, FL
Coconut Creek
Coral Springs
Dania
Deerfield Beach
Fort Lauderdale
Hallandale
Hollywood
Lighthouse Point
Margate
Pembroke Pines
Plantation
Pompano Beach

Cities in Charlotte County, FL
El Jobean
Englewood
Murdock
Placida
Port Charlotte
Punta Gorda
Rotonda West

Cities in Collier County, FL
Chokoloskee
Copeland
Everglades City
Goodland
Immokalee
Marco Island
Naples

Cities in De Soto County, FL
Arcadia

Cities in Glades County, FL
Moore Haven
Palmdale

Cities in Hardee County, FL
Bowling Green
Ona

Cities in Hendry County, FL
Clewiston
Felda
Labelle

Cities in Highlands County, FL
Avon Park
Lake Placid
Lorida
Sebring
Venus

Cities in Indian River County, FL
Vero Beach

Cities in Lee County, FL
Alva
Boca Grande
Bokeelia
Bonita Springs
Cape Coral
Captiva
Estero
Fort Myers
Fort Myers Beach
Lehigh Acres
North Fort Myers
Pineland
Saint James City
Sanibel

Cities in Manatee County, FL
Bradenton
Bradenton Beach
Ellenton
Longboat Key
Myakka City
Palmetto
Parrish
Sarasota

Cities in Martin County, FL
Hobe Sound
Indiantown
Jensen Beach
Palm City
Stuart

Cities in Miami-Dade County, FL
Coral Gables
Hialeah
Homestead
Key Biscayne
Miami
Miami Beach
Miami Gardens
North Miami Beach
Ochopee
Opa Locka

Cities in Monroe County, FL
Big Pine Key
Islamorada
Key Colony Beach
Key Largo
Key West
Long Key
Marathon
Marathon Shores
Summerland Key
Tavernier

Cities in Okeechobee County, FL
Okeechobee

Cities in Palm Beach County, FL
Belle Glade
Boca Raton
Boynton Beach
Canal Point
Delray Beach
Greenacres
Jupiter
Lake Harbor
Lake Worth
Loxahatchee
North Palm Beach
Pahokee
Palm Beach
Palm Beach Gardens
Royal Palm Beach
South Bay
Wellington
West Palm Beach

Cities in Saint Lucie County, FL
Fort Pierce
Port Saint Lucie

Cities in Sarasota County, FL
Englewood
Nokomis
North Port
Osprey
Sarasota
Venice

Please call us at: 1-888-638-4091
Call 1-866-562-1759 to talk to a representative
Testimonials

...The on-site staff that installed the piling systems were well mannered, clean, considerate of the job site, and willing to work well with the demands of the job site...
Testimonial by R. from Bonita Springs, FL

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