Insulation Under Roof Deck

Rigid foam board is just above the roof deck or an exterior insulation option.

Insulation under roof deck.

Insulation above the roof deck or air vapor impermeable insulation below the roof deck is needed for condensation control in an unvented roof. The previous four options are all used beneath the roof. Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels. An excellent fire barrier densdeck roof boards feature a noncombustible core and inorganic surface that offer greater fire protection than other conventional commercial roofing products when applied over combustible roof decks and steel decks.

Moving the air control layer and thermal control layer to the underside of the roof deck has significant advantages in cases where the hvac system is located in the attic. How to attach rigid insulation on the underside of the roof deck. We at the neo thermal insulation customize your needs of the building and offer you high quality thermal insulation services. But spray foam insulation used at the underside of the roof deck would need to be covered by a thermal barrier and intumescent coatings are commonly used.

The movement of air into indirect conditioning of an unvented attic is a slow gradual process that will not be noticeable by occupants and typically will not put any strain on the hvac system. This illustration shows a sloped roof with cavity spray foam insulation sprayed on the underside of the roof deck and covered with sprayed on thermal or ignition barrier coating. The roof deck is cold wood decks without insulation above them will readily equilibrate to the exterior temperature. During cooler night times and in winter periods the deck temperature can then be below the dew point of the interior air.

Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the. The ratio of insulation above the roof deck or air permeable insulation below the roof deck is a matter of climate and interior conditions. The greater your home s thermal resistance factor or r value the more energy efficient it is. Under deck roof insulation is the fastest accepting methodology among people and architectures to eliminate any gateway to heat transfer between outer space and inner space.

With rising heating and cooling. Walls foundations roof and roof decks air distribution ceilings interior solutions mechanical pipe equipment appliances commercial insulation home page. Explore owens corning commercial roof and roof deck insulation products to help with your next building project. Tectum e tectum e n acoustical roof deck description.