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' �ixit-Moisture Problems Page 6 of 6 <br /> . � � focused on a particular window,I suggest treating that window rather than <br /> going to the expense of adding a bathroom exhaust fan., Simply wiping the <br /> window with a towel will not prevent moisture damage to the window sill. <br /> Instead, I would install shrink-wrap plastic to the window(on the inside)to <br /> prevent steam from reaching the cold window and condensing. The plastic can <br /> be removed in the spring and re-applied each fall, as this is a wintertime <br /> problem. <br /> If you seal several windows,blocking escape routes for heat and moisture,you <br /> may need an exhaust fan to reduce moisture buildup in the air. In that case, you <br /> must make sure that your furnace and water heater have an adequate <br /> combustion air supply to prevent backdrafting of combustion gases into your <br /> home. <br /> Recommended publications: Combustion Air, Home Moisture, Windo�vs a�ld <br /> I)c,c�i-: <br /> Back to beginning of or_ <br /> A frosty storm door <br /> 1 bought a storm door. It frosts up on the inside when the weather freezes. The <br /> storm door is next to a wood inner door which is the entry to a front porch. My <br /> old storm door didn't frost up on the inside. This morning I could barely open <br /> the storm door. What is wrong? <br /> Enclosed porch areas are prone to frost accumulation. A door opening from <br /> inside to a cold porch allows indoor humidity to escape into a closed space <br /> where it condenses on cold surfaces. If the weatherstripping on the wood door <br /> next to the storm door is worn or absent,moist air can leak into the space <br /> between tne interiur uui,r aiiu siuriii uuur. <br /> Your old storm door may have had a looser fit than the new door. Your tight- <br /> fitting new door traps the moist air in the area between the storm and wood <br /> door, causing frost to accumulate on the metal storm door. Most storm doors <br /> have adjustable sweeps at the bottom of the door. Adjust the door bottom up, <br /> providing an opening at the bottom of the door where the moist air can escape <br /> � to the outside. To keep warm moist air from leaking into the space between the <br /> wood and storm doors, check the weatherstripping on the wood door and <br /> upgrade if necessary. <br /> Recommended publications: ('aull:in�� and ��%�ath�r,U•ippin�_. �Vinclo��s an�l <br /> I)��c�r�� <br /> Back to beginning of or _ <br /> http://www.commerce.state.mn.us/pages/Energy/InfoCenter/FixIdfixit04.htm 2/16/O 1 <br />