411homerepair.com

Latest Articles

How to Prepare Your Garden for Spring

Winter isn’t a time to neglect your garden because there are many tasks that need doing in order to ensure it’s ready for spring. If you spend time...

on Jan 18, 2022

5 Factors that Can Influence the Cost of a Roof Repair

One of the most important forms of maintenance on a home is to take care of the roof. At one point or another, every homeowner will have to repair...

on Dec 30, 2021

5 Home Repairs that Require Immediate Attention

If you have been a homeowner for a while, you'd know that any unexpected home repair can pop up at any time. It comes with the package of owning a...

on Dec 22, 2021

Discover What You Catch in Restrooms & How To Stay Safe

Thanks to the global pandemic that is continuing to disrupt everyday life, the world is currently obsessed with the need for hygiene. Now, more...

on Dec 15, 2021

No Garage? Parking Solutions for Homes without Them

When searching for a new home, most often buyers will look for homes with garages. And many buyers are hoping to find a multiple-car garage. While...

on Dec 13, 2021

What is Dry Rot? (fungus disease)

by Guest on May 12, 2012

Dryrot and Decay

Fungus diseases in the wood are also known as dry rot or wet rot.  This is caused by the growth of fungus in the wood. Wood-destroying fungi require a food source, oxygen, and favorable temperature in order to thrive. The cycle of promoting more dry rot is fungi increase wood permeability, this permeability allows more moisture to penetrate the wood and leads to more decay fungi, and the cycle continues.

There are 3 types of wood fungi : mold, sap stain and wood-decay fungi.

Wood Fungi

Brown rot, white rot and soft rot are three classes of fungi that are listed according to the type of decay they cause.

Brown Rot

Wood decayed by brown rot fungi looks like dry leather and breaks easily into small cubical pieces. The strength of the wood decreases as the growth spreads. Most of the damage to structures is caused by brown rot. Soft rot occurs in situations where wood is wet over a long period of time, such as an earth-to-wood contact and look similar to Brown Rot.

White Rot

Wood decayed by white rot often assumes a bleached appearance, frequently has black lines through it and feels spongy. The strength of wood attacked by white rot decreases gradually with little loss in strength during early stages of decay. If caught soon enough, White rot may be treated by spray of a bleach and scraped away. It is important to correct the moisture problem that caused the wet wood in the first place.

Soft Rot

Soft rot fungi looks like brown rot but the affected wood softens gradually from the surface inward developing cavities (invisible to the naked eye) within the wood cell walls.

Four principles of decay prevention

  1. Always build with wood that is properly seasoned.
  2. Keep wood dry and allow for ventilation where necessary.
  3. Break contact of untreated wood and soil.
  4. Where soil must contact wood, use properly pressure treated lumber. Concrete counts as soil.
  5. Don't paint mildew resistant paint on window sills or places that kids could ingest the paint chips.

Condensation & Moisture Build Up

One of the most frequent assaults on my sensitive nose and allergies is the odor of mold and mildew. Frequently, when called by a client to estimate recommended repairs by a termite company, the most important tool turns out to be my nose. The odor of mold inside a home is a sure sign that a moisture problem exists.

We have encased ourselves against the elements in structures that attempt to create a comfort envelope against the elements. Condensation on the skins of this envelope is caused by temperature differentials and can lead to dry rot in flooring to paint discoloration from mold growth.

Prevention of Condensation

One way to eliminate condensation is to increase the thickness of dead air space between heated/cooled spaces and the varying temperature outdoors. Many styles of insulation come with a built in vapor barrier that helps keep humidity (the ability of air to hold water) down indoors. As humidity decreases (dry air) we feel more comfortable at lower temperatures.

Cold weather condensation can be prevented by placing moisture barriers on the warm side (inside) of insulated walls and ceilings. Warm weather condensation can be treated by increasing the air flow by use of fans and by decreasing the humidity of crawl spaces, by use of adequate ventilation, soil drainage, soil covers and mechanical dehumidification. In theory warm weather condensation should also be treated by placing a vapor barrier on the outside (warm) of insulated walls. However, research has shown that an impermeable moisture barrier installed over studs will cause problems with sidings in areas of very hot moist conditions. Walls wrapped with permeable membrane (i.e.; Tyvek house wrap) out performed less permeable materials such as 30# felt, because they allow the moisture laden air to escape.

When mold and decay occur over broad areas not associated with a specific source of water (like a plumbing leak), the problem is either water conducting decay fungi or conventional decay fungi growing on wood that has been wetted by condensation. In the latter case the fungal growth will feel powdery or stringy. Water conducting fungi feels leathery and can often be peeled off in sheets. Unfortunately the only way to get rid of molds and decay fungi embedded in wood is to remove the piece. Frequently extracting a rotted structural piece can be an expensive proposition. Prevention is far cheaper.

Author

Guest

Guest

Sponsored Articles

Random Articles

Electric Floor Heating Mats

The radiant floor heating mats are sheets that can be placed indoors as well as outdoors to generate warmness or heat. These mats are used in...

Floors / Tile / Hardwood

Light up the World - Lighting Architecture

A home can be beautified by its architecture – the doors, the halls, the pillars, and the arches; or by its decorations – the wallpapers, the...

Electrical / Lighting

Dining Room Design Ideas

The dining room is fast-becoming the forgotten room in modern society. It’s the room people most often neglect in their home as an increasing...

Interior Design / Decor

Give Your Bathroom a Luxury Hotel Style Look

The bathroom is one of the most important places in a house and so it should also be stylish enough to complement the beauty of the house....

Kitchen / Bathrooms

Want to Take on a Real Estate Career?

Real estate could be a lucrative and very rewarding career option for most people. There is a vast range of opportunities that can be utilized with...

Real Estate / Finance

Actions

Contact Us | Submit Article | 411homerepair © 2022