Insulating Membrane Roof
Without a membrane vapour would rise and penetrate into the roof and insulation.
Insulating membrane roof. I have an insulation factor of about 8 10 plus the reflectivity of the white tpo. Should i leave out the soffit vent. Also there is a soffit vent but none at roof peak. The lwic systems are composed of either aggregate or cellular concrete.
Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation. Lightweight insulated concrete also known as lwic is a material intended for use as an insulation and substrate for support and attachment of roofing membranes on slope roofs. How to install insulation board over an existing roof membrane. Is there any advantage to trying to get any insulation in between the 2 8 rafters.
The old roof was tar and gravel so the switch to tpo should show significant change. Roof edge detail overhang extended to hide the thickness of the over roofing rigid insulation. Installed a new fully adhered membrane to the top of the old board sheathing prior to adding all that rigid insulation. A vapour membrane is also a likely requirement to stop moisture which is naturally generated in an occupied room.