Radiant Barrier Roof Life

This basically allows for wood rot to continue and inspectors have a more difficult time finding areas of concern.

Radiant barrier roof life.

Multiple studies have confirmed that a radiant barrier is a worthy addition to a home s thermal envelope. Attics heat up when the sun s radiant energy heats the shingles and the heat is transferred to the interior attic space through the roofing materials via conduction. Lowering the temperatures above living space ceilings provides a significant benefit by reducing air conditioning loads and energy usage. This can result in energy savings in cooling costs up to 10.

The hot roof material then radiates its gained heat energy onto the cooler attic surfaces including the air ducts and the attic floor. A radiant barrier works best when it is perpendicular to the radiant energy striking it. The heat that would normally be absorbed by the insulation is now being bounced back to the roof deck and causing the roof to emit more heat upward rather than both upward and downward. Increasing summer energy consumption and cooling costs.

This means radiant barrier can increase the life of the roof shingles. The temperature of the attic space increases and that heat is transferred to the building below. Roofs with radiant barrier have the potential to lower the temp at night because the radiant barrier prevented the heat loss that would typically occur from the traditional mass insulation on the attic floor rising to heat the roof. Radiant barrier has been shown to decrease ceiling heat gains by up to 42 in certain tests.

But on the bright side. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. Radiant barriers are utilized to reduce summer heat gain in attics. Installing a radiant barrier underneath the roof will cause the roof temperature to increase by a few degrees usually 2 10º.

Your radiant barrier makes the roof deck sheathing invisible from the attic.