Help please with insulation

[UncleBuck]

I was thinking about using pallets to create the flood would that be possible with this.

Also with what you described do I need to worry about water getting into the floor and soaking the foam. Or should I put down a liner after its built?

If so what's a good liner that's some what reflective.

my garage floor has a bit of slope to it, so i didn't even have to build one in. but you can spray that "good stuff" in floor cracks and slope the floor so that it all runs off to one place where you can put in a drain.

this is where it comes in handy to have a carpenter friend. making a consistent yet very slight slope to one area is no easy task.

a liner is an easy fix though.

 

[CanadianONE]

If you completely fill the wall cavity with the foam board there is no need to fill cracks there shouldn't be any. But anyplace you but once sheat against the other you want to tape the seams to act as a vapor barrier. I wouldn't leave the foam exposed either. Drywall is a good option to cover or ever cover with OSB since your planning on using panda film anyway.

 

[New guy joe]

Since this is in a portable garage the floor Atm is just a tarp. From what it sound like I want to frame the floor. Use foam in it. Then would it be fine to use OSB with a liner on top.
The slope thing is possible but I will have to talk to my friends helping if they have done anything like that.

 

[UncleBuck]

Since this is in a portable garage the floor Atm is just a tarp. From what it sound like I want to frame the floor. Use foam in it. Then would it be fine to use OSB with a liner on top.
The slope thing is possible but I will have to talk to my friends helping if they have done anything like that.

just a tarp changes everything. especially in oregon. you're gonna get rained on all winter long. and autumn. and most of spring.

what is the rest of this "portable garage" made of?

 

[New guy joe]

The portable garage is a heavy duty plastic material. Not sure exactly what. It's very sturdy and has made it threw onslaughts of rain snow and ice. Currently is being used for storage. Framing is made of metal.

 

[New guy joe]

The tarp on the floor is just so things stored arnt getting dirty. The floor will be made of wood in the room I'm framing.

 

[Rrog]

For the larger readership here that has sound isolation needs, don't use foams

 

[New guy joe]

For the larger readership here that has sound isolation needs, don't use foams

What is best for sounds isolation?

 

[Rrog]

Foam is best thermal insulation, worst for soundproofing

Fiberglass is best for sound, and the cheapest

 

[New guy joe]

So I was told that with fiberglass you want at least a 6 mil barrier to avoid mold. Would drywall suffice?

 

[Rrog]

Not sure about local items like that.

 

[New guy joe]

Not sure about local items like that.

Out of curiosity what are you using?

 

[Rrog]

Well I just built a new place so I have R35 walls 11" thick

6" Blown in cellulose and 3" rigid mineral fiber panels

 

[CanadianONE]

So I was told that with fiberglass you want at least a 6 mil barrier to avoid mold. Would drywall suffice?

https://en.m.wikipedia.org/wiki/Vapor_barrier

This is what I meant by vapor barrier. It's a plastic product you use to seal the insulation in the wall.

For the larger readership here that has sound isolation needs, don't use foams

From my understanding R-value would be his number one priority. As far as sound goes Roxul Safe n Sound is a great fire retardant sound proofing bat insulation. Most sound proofing solutions have no R-value though.

 

[Rrog]

I Don't disagree. I'm simply pointing out that foam is particularly bad if sound is the #1. Cheap fiberglass is the best choice for sound isolation.

 

[CanadianONE]

I agree if looking for both R-value and sound proofing then one of the many batt type insulations will be your best bet. IMO foam (spray or board) is the best solution when looking for a thermal barrier and sound is not a priority and something like Roxul Safe n Sound is the best when looking for sound proofing solutions and R-value isnt needed.

 

[Rrog]

IMO ... something like Roxul Safe n Sound is the best when looking for sound proofing solutions and R-value isnt needed.

Look at the acoustic lab data from your NRC in Montreal. If you parse thru the data, the worlds cheapest fiberglass insulation does better in the low frequency bass.

It's great when there's lab data to answer these things

 

[New guy joe]

Well I just built a new place so I have R35 walls 11" thick

6" Blown in cellulose and 3" rigid mineral fiber panels

Grow room or a bunker? that's sweet man

 

[Rrog]

I had a discount, and I'm gonna grow old and die here so I figured WTF

 

[New guy joe]

Built to last is always a good method. This is a room I will be leaving one day. Once I buy a home I'm sure I will put something up like that.