Tag Archives: moisture

Crawlspace Moisture

Excess Moisture in Crawlspaces

This time of year in the summer months causes concerns for musty odors, excess moisture and mold growth on the surfaces. What’s that smell? Do you know what is going on down in your crawlspace? Does it have a dirt floor? Is the open fiberglass insulation in the floor joist drooped down into the floor? These are signs that excessive moisture and mold contamination growth may be occurring.
Mold spores can and will exacerbate with any excess moisture and excess relative humidity that will cause existing mold spores to travel and move around where new growth can occur. Excess relative humidity in a basement or crawlspace is like adding ‘gas onto the fire’ where spores will grow. The picture in this crawlspace has a vapor barrier over the dirt floor and stapled above the floor joist. Moisture was still dripping with excess moisture in the middle of winter with a relative humidity reading at 79%. There was no dehumidification operating in the crawlspace.
Conducting a thorough visual investigation of the musty odor or any source of water leak, excess moisture is very important. Relative humidity (RH) should be less than 60% or lower to help to control moisture (30% to 50% (RH) is the best range). When (RH) is above 60% or more this is not good for your basement, crawlspace, or living/working space where mold and other contaminants can grow; even causing wood rot and decay to the structural support of the wood beams and joists. To control excess moisture and humidity it is important to install the proper dehumidification system. Too often homeowners and business owners do not have the proper size dehumidifier(s) installed because the square footage or cubic area is too large and the unit does not cover this amount of ambient space.
Crawlspaces with dirt floors should have quality grade vapor barriers with minimal 6 Mil thicknesses or higher covering the entire dirt floor including part of the lower side walls or to the top. Quality grade dehumidification is recommended to help control moisture.
During the hot and humid months less moisture is probable when the outside vents of crawlspace are closed up. Climates are different throughout the country; the Northeast region is different from the Southeast and Southwest regions.
Insulate using foam pipe sleeves any copper pipes underneath the crawlspace or in the basement area. The cold water pipes usually condensate when excess humidity comes in contact with them. Insulate Well Tanks and Water Filter Tanks as well. Dehumidifiers need to drain properly operating on a 24/7basis when needed.
If chronic water leaks or water floods into the basement or crawlspace areas then quality grade sump pump(s) and/or drainage are recommended. Install vinyl grade cover over sump pump area. Sump pump is best installed in the ground and the bucket is deep enough to effectively pump and drain water. Add drainage around perimeter if necessary. A professional can provide the proper assessment with the proper tools to help to determine such factors as relative humidity, temperature, air flows, moisture meters, Thermal Infrared Camera, etc.

Environmental Resources is here to help identify problem areas. Also we provide solutions with products and quality air purification with several pounds of carbon to fight odors. We offer sampling if it is called upon. Call for a professional consultation of your home or business’ indoor air quality today.

Andy Provitola CMC-Certified Microbial Consultant
Environmental Resources LLC
316 Washington Street
Norwell, MA 02061
781-248-9975
www.airenvironments.com

Excess Moisture Relative Humidity in Basements-Crawlspaces

This time of year in the summer months causes concerns for musty odors, excess moisture and mold growth on the surfaces.  What’s that smell? These complaints are often called into my office and I ask a few questions such as: Have you been flooded due to the recent heavy rains last spring or prior years. How about roof leaks, pipe leaks, or ice dams? If water intruded into the building or house and flooding occurred, how effective was the cleaning, drying out process ? Did you get to the water early such as within 24 to 48 hours to help avoid potential mold growth problems?

If existing surfaces are spotted with mold spores because the areas were not cleaned out properly then the mold will not disappear! Mold spores can and will exacerbate with any excess moisture and excess relative humidity that will cause existing mold spores to travel and move around where new growth can occur. Excess relative humidity in a basement or crawlspace is like adding ‘gas onto the fire’ where spores will grow.

Conducting a thorough visual investigation of the musty odor or any source of water leak, excess moisture is very important.  Relative humidity (RH) should be less than 60% or lower to help to control moisture (30% to 50% (RH) is the best range). When (RH) is above 60% or more this is not good for your basement, crawlspace, or living/working space where mold and other contaminants can grow; even causing wood rot and decay to the structural support of the wood beams and joists. To control excess moisture and humidity it is important to install the proper dehumidification system. Too often homeowners and business owners do not have the proper size dehumidifier(s) installed because the square footage or cubic area is too large and the unit does not cover this amount of ambient space.

Crawlspaces and basements should have quality grade vapor barriers with minimal 6 Mil thickness or higher covering the entire dirt floor including part of the lower side walls or to the top. Quality grade dehumidification is recommended to help control moisture.  During the hot and humid months less moisture is probable when the outside vents of crawlspace are closed up. Climates are different throughout the country, the Northeast region is different from the Southeast and Southwest regions.

Insulate using foam pipe sleeves any copper pipes underneath the crawlspace or in the basement area. The cold water pipes usually condensate when excess humidity comes in contact with them. Insulate Well Tanks and Water Filter Tanks as well.

If chronic water leaks or water floods into the basement or crawlspace areas then quality grade sump pump(s) are recommended with vinyl covers over the top of recessed bucket. It is best in the ground and the bucket is deep enough to effectively pump and drain water. Add drainage around perimeter if necessary.  A professional can provide the proper assessment with the proper tools to help to determine such factors as relative humidity, temperature, air flows, moisture meters, Thermal Infrared Camera, etc.

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Environmental Resources is here to help identify problem areas. Also we provide solutions with products and quality air purification with several pounds of carbon to fight odors.  We offer sampling if it is called upon. Call for a professional consultation of your home or business’ indoor air quality today.
Andy Provitola  CMC-Certified Microbial Consultant
Environmental Resources LLC
316 Washington Street
Norwell, MA 02061
781-248-9975

www.airenvironments.como my office

Ice Dams-Roof Leaks and Mold



Did you know that ice dams can cause mold problems?

Frozen ice and snow on top of roofs and gutters are creating havoc for homes in New England and the greater Boston area. With cold temperatures in freezing climates then an unexpected 40 to 60 degree day causes a lot of melting of the ice and snow which enables mold growth, roof deterioration of the plywood, wood rot in the fascais boards behind the gutters. The water and moisture can travel through the attic area, dormers, wall cavities and down into lower levels even down into the basement and first floor.

Some ways to detect mold: 

1. See if water spots and dark stains are noticed and perhaps wet.

2. Look for visible stains such as mold on the surfaces of the ceiling, walls of the living areas, floors, carpets, attic plywood sheathing, attic sidewalls,  floor joist, wet insulation, and excess moisture or humidity

3. Check for moisture or high relative humidity over 65% and higher.

4. Smelling unusual irritable odors such as musty or moldy where wall cavities or insulation can be wet inside the walls, but dry on the outside wall. High relative humidity or moisture may be the culprit.

5. Other ways to detect mold is to hire a competent professional with the right tools such as conducting mold sampling the air or visible mold with tapes, swabs, or bulk.

6. Utilizing moisture meters, Thermal Infrared Imaging camera, boroscopes, etc.


For a professional mold inspection and mold assessment call:

Andy Provitola CMC-Certified Microbial Consultant
Environmental Resources LLC
Headquarters
316 Washington Street
Norwell, MA 02061
781-248-9975

www.airenvironments.com

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