Insulating A Cold Roof

A properly insulated ventilated roof can.

Insulating a cold roof.

These roofs include a. It requires the existing roof surface to be ripped up so that the insulation can be laid in between before a new roof surface is then. 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. However cold roof insulation on an existing flat roof system is anything but simple.

Before learning how toinsulate a cold pitched roof what insulation method and material to use you will need to know some basics about pitched roof types which will reversibly affect all the named questions for starters it is good to mention that there are many positive effects of having a properly insulated roof not only to your roof space that is your loft or attic. Water is insulation s enemy. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Ventilated roofs remove moisture from roof cavities structural members sheathing and insulation.

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. 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. 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.

This roof assembly is often referred to as a cold roof and is the antithesis of a hot roof.