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If uncontrolled heat (air) is getting into your attic it could cause premature melting of snow on your roof. If this melt water refreezes it could result in serious problems such as water damage or mold and mildew which could result in heath problems such as sick house syndrome.
Mold forms when moist air reaches the dew point and condenses on a cooler surface
in your attic creating a breeding ground for bacteria. Recent research of home air
dynamics has discovered a condition known as the “Stack Effect” which can force
warm humid air into your attic. The stack effect occurs when warm pressurized air
is forced upwards from spaces below it. The warm air is able to carry more water
vapor which results in higher air pressure that lasts until it is cooled or the pressurized
air is released into the atmosphere relieving the pressure.
In tighter homes with new windows and insulated vinyl siding the warm, pressurized air will rise all the way to the attic passing through the insulation in the floor. Insulation performs best when it is in a concealed cavity, such as an exterior wall, and there is little or no air movement. However since the insulation in the attic floor is usually open bat insulation it cannot stop the air from passing through it. A simple inspection of the insulation is necessary to see this is happening. If air is passing through the insulation the insulation will be dirty.
There are many other ways that air can move through your home. For instance, penetrations, holes, cracks in the walls or ceilings, plumbing vent pipes, chimney stacks, pipe chases, wire chases, light fixtures particularly recessed light fixtures, interior or exterior partition walls, wall switches/outlets, pull down staircases or closet access hatches, heating and air conditioning vents, laundry chutes, and even outside air drawn from unbalanced attic ventilation can all contribute to the stack effect.
Call (508) 269-8469 for a free consultation from an experience professional or
Email us at info@yourhomeexteriors.com
The Stack Effect, Attic Mold, Insulated Vinyl Siding
Your Home Exterior Solutions
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Proudly providing home improvement services in Mansfield, Foxboro, Franklin, North Attleboro, Attleboro, Easton, Sharon, Norton, Needham, Wrentham, Norfolk, Foxboro, Plainville MA and surrounding communities. Your Home Exterior Solutions' Services include New Windows, Replacement Windows, Roofing, Exterior Siding, Composite Deck Designs, Custom Entry Door Replacement, Air Sealing, Insulation, and more.
