Double Layer Attic Insulation

For diy attic insulation you ve got two choices.

Double layer attic insulation.

I want to cover the insulation with a thin layer of plywood or paneling on the walls of the stairway going up to the attic. I am trying to build a dwarf wall and build a conservatory. I want to cover the exposed insulation with plywood on the floor of my attic. Or to achieve an r 60ish level i want to double layer the insulation if possible.

Insulation radiant and vapor barriers does doubling insulation layer double r value ok. The insulation is with facing against the inside. Roll out the second layer so it installs perpendicular to the attic floor joists and the existing insulation between them. It could also be that the upper layer is not well adhered to the bottom layer and they.

Also it is an unfinished extra room. Normally r 13 or r 19 insulation is installed between the ceiling joists in the direction of the joists and then another layer of insulation usually r 30 is applied perpendicular to the initial layer on top of the first. A couple of different layers will keep a person warmer than one big single layer especially in one s attic. Loose fill or batt the common term for blanket insulation.

I have access to some metal insulation panel s. Both can be added to uninsulated attics or layered over existing material. In other words i see pink. I have 2x8 floor joists and replaced the loose fill fiberglass insulation with 2 layers of comfort therm batt insulation.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. With that said would i roll an r 19 on top of existing. Double layer of insulation vapor barrier i am converting my attic into storage space and in the next few years hope to convert it to a living space.