Roof Insulation Foil Up Or Down

The paper facing should always face toward the inside of the home.

Roof insulation foil up or down.

Does that side go up towards the metal or down towards the ceiling. The foil layer of the osb lowers the delta t because the foil is low emitting and does not emit or absorb heat. You must ensure the attic ventilation is not blocked. One side has a reflective foil layer on it.

I have a question about insulation under a metal roof. In the above states you can staple the foil double bubble insulation directly to the roof decking instead of installing to the underside of the rafters as indicated above. You will have to ensure there are good air gaps either side of the foil to get the best performance. The roof we are installing is aluzinc painted white.

Kim asks on your show you said that when insulating under a floor the paper facing should face up against the flooring. Foil down usually mostly to help prevent excess radiation of the installers. Foil insulation is worth considering if you have restricted space in your loft or roof space that means regular insulation is not viable. If dust accumulates on the foil surface it will render the radiant barrier less efficient.

They should be installed with the foil side facing into the attic adjacent to an open air space. We bought a bubble type of insulation. You must leave at least a 1 airspace between the bubble insulation and the fiberglass insulation below. So when the sun hits the roof and radiates into the attic or wall the foil layer of the osb sheathing reflects the heat to the roof or exterior wall which keeps the top layer of the insulation just a few degrees warmer than the outside air temperature.

Due to the varying nature of the construction of buildings each property may require a slightly different approach when installing insulation on the roof. What is the right insulation for an attic. For clean foil it doesn t really matter which way it goes. Foil insulation underlayment is recommended under a metal roof and in most cases the shiny side should be facing up but there s a catch.

Why can t i install it the other way regardless of whether insulation is installed in a wall attic or crawlspace. Foil insulation is a radiant barrier and it works by.