Fiberglass Failure #3 - View
Photos below
Location:
Mississippi River near Bemidji, MN
Date: Dec. 2008
Neither NCI nor Hammerback Remodeling had anything to do
with this Project Prior to Dec. 2008.
Problems Noticed: Snow and Frost Melting in Irregular Patterns, Water Condensation,
thought it was Leaky Shingles (They'd been replaced 2 yrs before).
Overview: 20 yr old home. Frost and Snow Melting in very cold weather indicating
Heat Loss. Dripping water from ceilings and vault. Two spots where water was
running down ext. walls.
What Happened: Fiberglass Insulation slows down Warm Air Movement (Infiltration).
It doesn't stop it, so as the warm air came into contact with Plywood Roof Sheathing
in the winter (Below 32 Degrees F) Frost and Condensation occur. At some point
it needs to melt. In many roof systems, it has little chance of drying out, creating
perfect conditions for Mold.
Also very inefficient and expensive. Foaming it was the perfect solution for
the problems.
We tore off existing roof plywood, and removed fiberglass and cellulose Insulation.
Replaced with 8 inches of Icynene Insulation. Took 1 day to tear off and replace.
Keith called last winter to let us know how impressed he was by the fix and
how much he was saving on energy costs.
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