Houle Insulation Inc.
Houle Insulation Inc.
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Click Here to check for current Angie's List® ratings We Sell Energy Star Applegate Insulation - Naturally Better Insulation Member Metro North Chamber of Commerce - Member Member Anoka Area Chamber of Commerce - Member Member NARI® - National Association of the Remodeling Industry Minnesota - Member Home Owner's Resource Guide - Member Minnesota Center for Energy and Environment (CEE)

Bypass Sealing

If your attic is poorly insulated, you could save money on your heating and cooling bills by insulating to adequate levels - provided you first seal attic bypasses.

Air Infiltration and Attic Bypasses Diagram ~ Click for larger image Bypasses are hidden air passageways that lead from the heated space into the attic. Because warm air rises, it continuously moves up the bypasses and escapes into the attic.

Common attic bypasses are located around chimneys, ceiling light fixtures, heating ducts, kitchen and bath exhaust fans, plumbing, electrical wires, dropped ceilings and soffits.
Dead Space Over A Stairway Creating A Bypass ~ Click for larger image
Bypass Over A Stairway

In addition to being a source of heat loss, bypasses also cause indoor moisture problems. Warm air leaking into the attic causes moisture to condense onto cool surfaces.

This moisture can rot wood joists and reduce the effectiveness of your insulation. Moisture problems can become so bad it can even "rain" in your attic!

Furnace Flue Chaseway Bypass - Notice The Moisture Stain On The Wall (From Warm Moist Air) And The Black Fiberglass - It Was Acting As An Air Filter Not An Insulator ~ Click for larger image
Furnace Flu Bypass

Bypasses are also the primary cause of ice dams and attic frost.

Also, see attic insulation.


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Additional Comments or Specific Questions:
(Houle Insulation Inc.) (Cellulose vs Fiberglass)
(Do I Need Insulation?) (R-Value) (Ventilation) (Blower Door)
(Finished Attics in Story-and-a-Half Homes)
(Attic Insulation) (Sidewalls) (Sound) (Ice Dams) (Bypass)
(Ice Dams and Hot Spots Gallery) (Frost and Moisture) (Fire)
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(The Colorado Study) (NBC Dateline) (FAQ's) (Customer Comments)
(Request Free Estimate) (NARI®) (2008 Show Schedule)
(Energy Headlines) (Contact Houle Insulation Inc.)

Our Specialty is Your Existing Home!®

Houle Insulation Inc.
Arne & Kari Olson
381 - 118th Avenue N.W.
Coon Rapids, MN 55448
763.767.8412

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