Off The Grid Tiny House Episode 5: Subfloor Insulation

[@valartca]

nice video. what board do you use? i dont see the link for it

[@redsresearch]

wont that condensate between the insulation and the sheet metal?

[@offthegridtinyhouse2821]

Yeah, that's a valid concern. Ideally you would have an air gap between the insulation and sheet metal.

[@bartolomeonew]

@@offthegridtinyhouse2821 how is it possible to condensate if there is no air flow at all? it is like to consider condensation inside the PIR sandwich (alu-pir-alu)... There must be a humid air coming from somewhere first, isn't it?

[@matteusolmedo3161]

⁠​⁠@@bartolomeonewThere is no air barrier on the top of the “sandwich” so technically humid air can find its way through the flooring and subfloor and insulation and condensate on the cold interior surface of the metal.

[@jherman89]

Is it just me, or is that a very thick subfloor?

[@offthegridtinyhouse2821]

It is a VERY thick subfloor. The metal framing of the trailer forces you to make a decision to either place the plumbing under the trailer frame or over it. I talked about that decision in an earlier episode. Once you decide to put the plumbing above the trailer frame this creates a large subfloor area. For me, this was worth the sacrifice of space and adds the benefit of plenty of room for nice, warm insulation in the subfloor framing bays.