Warm Roof Thermal Bridging

Thermal bridging a thermal bridge allows heat to short circuit insulation.

Warm roof thermal bridging.

Wood metal and concrete in exterior walls act as thermal bridges conducting far more heat than the insulation on either side of them. Thermal bridging is caused by highly conductive elements that penetrate the thermal insulation and or misaligned planes of thermal insulation. Most common roof type. Thermal bridging takes place in wood framed assemblies because although wood is a pretty good insulator at about r 1 per inch it is at least three times more thermally conductive than any cavity insulation which start at about r 3 5 per inch.

The advantages of warm roof construction. Thermal bridging is largely eliminated as the insulation is continuous over the whole roof structure. The dew point temperature the temperature at which water vapour in the air condenses as water is on. Thermal bridging is the movement of heat across an object that is more conductive than the materials around it.

Thermal bridging in roofs and framing this post is part of a series on thermal bridging. Typically this occurs when a material of high thermal conductivity such as steel framing or concrete penetrates or interrupts a layer of low thermal conductivity material such as insulation. Thermal bridging is largely eliminated as the insulation is continuous over the whole roof structure. The conductive material creates a path of least resistance for heat.

Thermal bridging is the movement of heat across an object that is more conductive than the materials around it. The ceiling space is on the warm side of the insulation. Foam studs wouldn t carry a canadian snow load. Thermal bridges are localized areas of high heat flow through walls roofs and other insulated building envelope components.

The ceiling space is on the warm side of the insulation. The need for roof space ventilation is eliminated or reduced. The conductive material creates a path of least resistance for heat. The need for roof space ventilation is eliminated or reduced.

Point of fact your roofing system s thermal performance is a major factor in your building s overall thermal performance. Thermal bridging of a flat roof can be a source of energy loss in buildings leading to higher utility bills and less efficiency.