Insulating A Cold Roof

A properly insulated ventilated roof can.

Insulating a cold roof.

A cold roof assembly can also be created using other types of insulation. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Water is insulation s enemy. With two strategies employed the airtight vapor impermeable foam plus the ventilation as a safety valve you might call this a belt and suspenders approach to building.

Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. The term cold roof refers to traditional roofs in which insulation is placed in the ceiling of the home so it is underneath the attic space which is not conditioned. Cold deck or cold roof is where the insulation is below the roof deck and the associated joists. Typically a gap will have to be left for ventilation because this is a cold area.

These roofs include a. However cold roof insulation on an existing flat roof system is anything but simple. Cold roof insulation is most commonly used when a flat roof is first being created because it s a relatively easy process. This roof assembly is often referred to as a cold roof and is the antithesis of a hot roof.

Box out light fixtures.