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To apply a radiant barrier in an existing attic, it may be stapled to the underside of the roof rafters. This method offers the same benefits as the draped method in that dual air spaces are provided. However, it is essential that the vents be allowed to remain open to prevent moisture from being trapped in the attic.
A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .
Louvered attic vent in a gable. Modern building codes permit both vented and unvented attics in all climates, if a building is otherwise correctly constructed. [5] However, unoccupied attics should usually be ventilated [6] to reduce the accumulation of heat and moisture that contribute to mold growth and decay of wood rafters and ceiling ...
A warm roof is a roof that is not ventilated, [9] where the insulation is placed in line with the roof pitch. [10] A hot roof is a roof designed not to have any ventilation and has enough air-impermeable insulation in contact with the sheathing to prevent condensation [ 11 ] such as when spray foam insulation is applied directly to the under ...
Swiss police officer shovels snow on a roof top of a hotel, the day before the opening of the 42nd Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, Tuesday, Jan. 24, 2012 .
Rigid panel insulation, also known as continuous insulation [13] can be made from foam plastics such as polyisocyanurate or polystyrene, or from fibrous materials such as fiberglass, rock and slag wool. Rigid panel continuous insulation is often used to provide a thermal break in the building envelope, thus reducing thermal bridging.
To determine whether you should add insulation, you first need to find out how much insulation you already have in your home and where. A qualified home energy auditor will include an insulation check as a routine part of a whole-house energy audit. [15] However, you can sometimes perform a self-assessment in certain areas of the home, such as ...
The insulation (e.g. by pumice aggregate) of the low-density concrete would reduce condensation on rafters (i.e. dry rot), ice-dams on the roof (leaks), and cooling problems that are normally reduced by a vented attic. [4] The outside design would appear unchanged: The parapet could conceal the slight hip and thicker roof.
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