help with insulation and ventilation

[halexanderwilhelm]

I live in the mountains and my TT needs to be really, really well insulated and ventilated. I have thought about foam boarding the interior but would like to know the pros and cons of what others have experienced first. Should I use "pink" home stuff, styrofoam or the blue/green board. Like I had mentioned my first inclination was to use foam board with one sided aluminum backing and glue it up inside. What do you guys think?

[Nobody]

Depends on wall construction type. Don't have any experience using solid plywood walls. I used 'sandwich' wall construction. Cut my profile from 1/4" oak ply (stained/poly'd inside before installation), added 3/4" framing cut from 1X spruce, installed sides on floor, installed 1 1/2" spruce spars for roof then installed ceiling, filled all voids with 3/4" foam board on sides & 1 1/2" foam board in ceiling & front before adding 1/4" luan sides & double layer of 1/8" luan on top. Have a fantastic vent/fan in roof & 12X18" crank-out windows in each door for ventilation. Have slept comfortably with only light fleece sleeping bag & comforter down to 18* with no heat. The fantastic vent & door windows open a couple of inches keeps enough air moving to sleep comfortably in high 80's/low 90's unless it is very humid, then I hook up the Pet Cool AC.

[Mark McD]

Blue.Pink. White. Doesn't matter what type but does doesn't matter what R-value . Pick the foam with the highest r-value. The pink and blue foams are less of a mess to install than the white type. The pink and blue are extruded poly, the white is not. Hence the white snowstorm you get when cutting it.
Either way I cut foam on the tablesaw- quick and easy.

[Steve_Cox]

I agree with Harvey and Mark.

Used pink foam in the teardrop walls, floor and ceiling and a Fantastic Fan to circulate air.

[Classic Finn]

I dont have insulation on the sides as its 20mm Marine ply however I used 50 mm blue insulation from front to back and Im glad I did. Its nice n warm in winter and cool in summer. In addition Ive got the Fan Tastic Fan above.

Next time I,ll insulate sides on our next tear.

Classic Finn

[Arne]

I'd recommend insulating the floor for extremely cold weather. I know a mattress can provide insulation, but the cold can come through it as well.

I used a built up floor, just like my walls and ceiling... it came out weighing about the same as a 3/4" ply floor would.

Other than that, same as above. I have 4 smaller windows and a fantastic fan in the roof.

see link below for pics.

[Classic Finn]

I'd recommend insulating the floor for extremely cold weather. I know a mattress can provide insulation, but the cold can come through it as well.

I used a built up floor, just like my walls and ceiling... it came out weighing about the same as a 3/4" ply floor would.

Other than that, same as above. I have 4 smaller windows and a fantastic fan in the roof.

see link below for pics.

Hi Arne

Weve got hardwood flooring in ours and with insulation under that and its plenty warm. And here the weather can get very cold. Included in that is a 12v heater with timer that we can turn on and off whenever needed. Between the tear floor and hardwood.

Directly under the mattress is padding that is about 10mm in thickness that the air will circulate under so it is not sitting directly on the floor.



Classic Finn

[Mauleskinner]

Directly under the mattress is padding that is about 10mm in thickness that the air will circulate under so it is not sitting directly on the floor.



Classic Finn

Got more info on that stuff? Looks interesting...

David