Radiant Heat Barrier Attic Shingle Damage

We take a look at how radiant barriers work the different types of radiant barriers and some of the.

Radiant heat barrier attic shingle damage.

This is not significant enough to cause any damage to shingles. Damp insulation may support mold growth and eventually will lose some of its r value. Since it is installed under the roof it is reasonable to conclude that additional heat buildup will result in the shingles and possibly cause. The reduced heat gain may even allow for a smaller air conditioning system.

The reduced heat gain may even allow for a smaller air conditioning system. This is a valid concern based on the concept of what a radiant barrier is designed to do. 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. Installing a radiant barrier underneath the roof will cause the roof temperature to increase by a few degrees usually 2 10º.

This may seem unbelievable since radiant barriers are sold on the fact that they will reflect 97 of radiant energy away from their surface. The bottom of the roof deck will be 20 or 30 degrees lower. Radiant barriers are utilized to reduce summer heat gain in attics and help to improve the efficiency of green building envelopes. 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.

Through the process of infrared radiation the heat from the roof is emitted or radiated into the attic where the insulation absorbs it. It is essentially intended to reflect radiant heat away from the attic. Radiant barriers are more effective in hot climates than in cool climates especially when cooling air ducts are located in the attic. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic.

The short answer is no damage will occur. Tests have shown that installing a radiant barrier in attics generally only cause the roof and shingles to increase about 2 10 fahrenheit. Some studies show that radiant barriers can reduce cooling costs 5 to 10 when used in a warm sunny climate. A radiant barrier can lower heat transfer from attics to the building below keep the attic space cooler and lower cooling costs by up to 17 in warmer climates.

Will radiant barrier damage my shingles. Some studies show that radiant barriers can reduce cooling costs 5 to 10 when used in a warm sunny climate. According to the department of energy installing radiant barrier on the floor of the attic can cause problems.