Insulate

[rakuz66]

Is it worthwhile to insulate underneath the floor of a cabin that's built on post and beams?    Or would skirting be more appropriate

[ScottA]

Depends. I'm going to insulate mine. If you don't insulate the floor you should insulate the skirting to create a conditioned crawl space. If you're not using A/C then it's not important unless you have a real cold climate.

[MountainDon]

Yep... "depends".

Unless the climate was mild I'd think it well worth insulating. And it depends on how, when and how often the structure is being used.

[TheWire]

I'm insulating mine by putting 1" T&G 150 psi rigid foam over my subfloor then 5/8" plywood over that.  I put a double bottom plate in to accommodate this.

I put a pressure treated subfloor in because I built the foundation and first floor deck last fall then started back up this spring.  I also wanted to make sure the crawl space moisture didn't rot my floor from underneath.  I don't, however, want the PT wood exposed to the inside and my insulation method will take care of that.  It's also critter proof.

Jerry

[dogneck]

I am new and interested in the value of the rigid t&G foam over the subfloor.   I am doing a 14x24ft addition to the rear of my house.  12'x12' was an old patio,  I removed the patio slate,  that leaves a sand filled base.  I didn't want to hammer out the stone wall and remove all the sand.  Also it holds up the balance of the patio which is being left in place.    I don't know how to insulate this area.   The rest of the building has a crawl space of 2 1/2 to 3 1/2 ft.     Maybe the best thing would be for me to do the t&g rigid form board over the whole thing.    I have pressue treated 2x12 floor joists.    Will that work?  or is there some other insulation that I could use in that old patio area.  I'm placing black vapor barrier on the whole ground, including the old patio.

[rakuz66]

So, if I'm hearing everyone correctly, if I only use the camp sporadically, (8-10 ) times a yr, it's not worth it to insulate, but skirting may be better. 

[glenn kangiser]

I think that would be a good conclusion.  I am currently working on a house where the rodents - critters have had their way with the insulation - so the skirting would be of more use if not there often and you don't want to rodent proof the insulation.