ICE DAMSNEXT STEP LIVING
ICE DAMSThis mini-workshop       What are ice dams?is presented by theGreen Needham            What causes ice dams?Coll...
CAN ICE DAMS BE PREVENTED?                                                    There is no perfect solution               ...
WHAT ARE ICE DAMS?
WHAT ARE ICE DAMS?Home in Sudbury last winter.   How can they be identified?                                  Icicles han...
WHAT ARE ICE DAMS?1. Indoor heat lossthrough attic, cathedralceilings and transitionsbetween walls and theroof.2. Melting ...
WHAT CAUSES ICE DAMS?www.homeperformancetechnologies.com
WHAT CAUSES ICE DAMS?                   icedamprevention.org
WHAT ARE THE CONSEQUENCES…   Water damage leads to…     Mold/Mildew     Indoor  air quality problems     Structural da...
PREVENTING ICE DAMS     www.homeperformancetechnologies.com
AIR SEALINGThe Mass Save HomeEnergy ServicesProgram rebates airsealing.•   100% rebated•   Thermadome•   Vapor barrier for...
INSULATION             Rebated under the Mass Some Home             Energy Services Program             • 75% off – up to ...
VENTILATIONVentilation isrebated as partof theweatherizationcontract underthe Mass SaveProgram.-Vents-Insulated bath fanho...
STRUCTURAL REALITY Due to the design of certain homes,  eliminating ice dams will be very  difficult. Cathedral ceilings...
MYTHS ABOUT ICE DAMS      Myth: Ice dams can be prevented by      slide sheets and electric coils.             Fact: While...
MYTHS ABOUT ICE DAMS                           Myth: Ice dams are related to the                            gutters.     ...
MYTHS ABOUT ICE DAMS                           Myth: Raking the snow off the roof is a                            great w...
FIRST STEP…      Visit www.greenneedham.org to learn      more about energy efficiency and no-cost         Mass Save home ...
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Ice damming

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Green Needham/Next Step Living Weatherization Seminar presentation on ice damming.

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Ice damming

  1. 1. ICE DAMSNEXT STEP LIVING
  2. 2. ICE DAMSThis mini-workshop  What are ice dams?is presented by theGreen Needham  What causes ice dams?Collaborative andNext Step Living.  What are the consequences of ice dams?  How are ice dams prevented?  The role of air sealing  The role of insulation  The role of ventilation  Myths about ice dams  First step…
  3. 3. CAN ICE DAMS BE PREVENTED?  There is no perfect solution to prevent ice dams.  With the proper preparation, ice dams can be reduced, and in some cases eliminated entirely. http://greenhomesamerica.files.wordpress.com
  4. 4. WHAT ARE ICE DAMS?
  5. 5. WHAT ARE ICE DAMS?Home in Sudbury last winter. How can they be identified?  Icicles hanging off of an eave of a house are the main indicator of ice dams.  The larger the icicle, the larger the ice dam.
  6. 6. WHAT ARE ICE DAMS?1. Indoor heat lossthrough attic, cathedralceilings and transitionsbetween walls and theroof.2. Melting water flowsdown the roof towards theeave.3. An ice dam is formed.4. Water builds upbehind the dam andseeps into your home. www.aquaguideinc.com
  7. 7. WHAT CAUSES ICE DAMS?www.homeperformancetechnologies.com
  8. 8. WHAT CAUSES ICE DAMS? icedamprevention.org
  9. 9. WHAT ARE THE CONSEQUENCES… Water damage leads to…  Mold/Mildew  Indoor air quality problems  Structural damage  Electrical damage  Physical danger of falling icicles elliotwhittier.com capslove.files.wor thelivinggreensolution.com dpress.com
  10. 10. PREVENTING ICE DAMS www.homeperformancetechnologies.com
  11. 11. AIR SEALINGThe Mass Save HomeEnergy ServicesProgram rebates airsealing.• 100% rebated• Thermadome• Vapor barrier for dirt crawl spaces
  12. 12. INSULATION Rebated under the Mass Some Home Energy Services Program • 75% off – up to $2,000 - per year • R-38 – 11 inches – of insulation • Dense pack under floored attics
  13. 13. VENTILATIONVentilation isrebated as partof theweatherizationcontract underthe Mass SaveProgram.-Vents-Insulated bath fanhoses
  14. 14. STRUCTURAL REALITY Due to the design of certain homes, eliminating ice dams will be very difficult. Cathedral ceilings Cape Cod homes are more prone to ice damming due to convective heat loss in transitions and sloped ceilings. greenhomesamerica.files.wordpress.com
  15. 15. MYTHS ABOUT ICE DAMS Myth: Ice dams can be prevented by slide sheets and electric coils. Fact: While both of these solutions have been said to work anecdotally, neither actually address the real problem. www.buildingscience.com www.buildingscience.com
  16. 16. MYTHS ABOUT ICE DAMS  Myth: Ice dams are related to the gutters. Fact: Gutters do not necessarily cause ice dams, although they can be severely damaged by ice dams by extending the frozen layer of ice beyond the eave of the roof, putting excessive stress and weight on the gutters.www.icedamcompany.com
  17. 17. MYTHS ABOUT ICE DAMS  Myth: Raking the snow off the roof is a great way to prevent ice dams. Fact: Raking the snow off of your roof can be very dangerous and cause significant damage to the shingles. If you don’t have ice dams, the layer of snow that builds up on the roof is actually a great insulator.http://bladeworkz.com
  18. 18. FIRST STEP… Visit www.greenneedham.org to learn more about energy efficiency and no-cost Mass Save home energy assessments.

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