Radiant Barrier Insulation Flat Roof

1 the existing insulation could become wet and lose some of its insulating value 2 water spots could appear on the ceiling and 3 under severe conditions the ceiling framing could rot.

Radiant barrier insulation flat roof.

Increasing summer energy consumption and cooling costs. A radiant barrier is designed to increase the effectiveness of your thermal envelope. Using radiant barrier outside on flat roofs concrete buildings would laying atticfoil directly on the roof of these buildings be effective in reducing the heat absorbed by the roof and radiating into the structure below. April 19 2019 posted in.

Radiant barrier foil insulation systems block radiant heat energy instead of absorbing it like fiberglass insulation. Radiant barrier is a highly reflective material typically made of aluminum which blocks the transfer of radiant heat by reflecting it away from its surface offering a permanent way to reduce your monthly utility costs. Prevents corrosion and surface deterioration. 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. A radiant barrier works best when it is perpendicular to the radiant energy striking it. Roof systems on commercial buildings or flat roofed residences are usually quite different from most residential roofs. Sunshield radiant barrier for roofs and exteriors is excellent for roof and outdoor wall applications.

It is meant to supplement insulation not replace it. Radiantguard radiant barrier foil insulation installed in an attics can reduce attic temperatures by up to 30 degrees when stapled with a staple gun to the underside of roof rafters by reflecting up to 97 of the radiant heat that strikes its surface thereby reducing heat transfer from the attic to living spaces resulting in lower utility bills. Condensation of large amounts of water could lead to the following problems. 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.

Installing a radiant barrier underneath the roof will cause the roof temperature to increase by a few degrees usually 2 10º. By reducing the amount of radiant heat reaching the insulation in your attic the insulation remains cooler and is able to keep your home more comfortable. During cold weather a radiant barrier on top of the insulation could cause water vapor to condense on the barrier s underside. 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.