Spray Foam Insulation

[Luzbel]

Hello,

I was wondering if anyone has used a decent and affordable contractor for spray insualting a fish house recently? I have called my local contractors (Monticello, MN)and they have quoted me between $800 to $1200 to insulate my 6.5' wide x 14' long x 7.5' tall house with closed cell foam. I just figured that word of mouth goes way further than any sales guys over the phone.

[Hawg]

My 8 x 16 is $1000 for floor, ceiling, and walls so I don't think you're far off. I had prices up to $1600. What we all need is a brother in the business.

[Luzbel]

LOL, even a brother in-law would work.. Who did you use to get your house insulated?

[Lip_Ripper Guy]

That is about what you'll find for pricing. I had Jordan from Complete Comfort Spray Foam do mine.

[Luzbel]

Ok, Great responses... I just wanted to make sure I talked to people with experience in this before having it done.

[BryeGuy]

I need to get a house done also. its an 6 1/2x12. The quotes have ranged from $550 to $800. Seems a little steep for a house that size. Its 1 1/2" walls and 2" ceiling. The floor is already done with foam board. Keep us posted on who you go with.

[jigginjim]

I was thinking of putting 1 1/2" foam between two layers of plywood on floor.

[Luzbel]

The only reason I wanted to go with sprayed foam was to keep the weight to a minimun, also to help keeping the frame strong. I will definally keep you posted on who I go with, maybe we can all get a discount.

[Luzbel]

Sandwich insulation works great but there are a couple things to consider... Cost, weight and longevity

If you already have the materials... then life is good. If not.. the cost for the 4 x 8 plywood alone is pushing $40 per sheet. The foam alone is pushing $30 and even if you use thin plywood underneath, the cost per 8 x 4 will be over $100 and well over 100 lbs.

Maybe doing the spray foam in stages will cost on the cost.. There are just so many toys and so little money,

[BoxMN]

Friend did his with spray, and just left it exposed on the inside. It is wheel house, and looks fancy on outside, but pretty "yellow" on inside but it is sturdy, can heat it with a candle and works great. I think I would personally have it sprayed, maybe finish it later when you get more cash. But do it right if you plan to keep it.

But this two cents is from a guy who built a 12x14 double wide shack with mostly freebies and scraps, and used rigid foam board scrounged from all over, haha! Ended up costing about $900 still, but included everything and rubber roof, 4 new treated skids with steel runners, three big windows and full LED lighting, hehe. Good luck!

[Luzbel]

Box,

You are the man!

$900??? really?

[BoxMN]

You are the man!

$900??? really?

Hehe, well, it is not a purty place like many, but it works! I added a photo and some more info in the "show me your ice shack" thread Didn't mean to re-rail this thread.

[hunterdave29]

if Spray foam adds structural integrity then is it okay to put your studs every 2 foot instead of 16 on center? Save weight and $$$

[Luzbel]

Box, I just checked your fish house... and it sure looks nice to me from the outside.. I would drop 900 bucks anyday for a house like that..

[Luzbel]

You could but keep in mind that some of those lakes are pretty rough driving over them.. you would only be saving few bucks a few pounds..

[Hawg]

Hunterdave-I was wondering the same thing and then thought-why? A few extra boards don't weigh or cost that much on an 8 x 16 so I did it the right way -16inch. With all the money it cost to build these things I figured I'd do it the way it should be. All my small houses were 24 in though.

[Luzbel]

Hunterdave,

Spend the money, enjoy your fish house longer..

[Lip_Ripper Guy]

if Spray foam adds structural integrity then is it okay to put your studs every 2 foot instead of 16 on center? Save weight and $$$

I would not do that. If you are ripping 2x4's for studs, you'll save about $10 and maybe 10 pounds.

[sam10basefish]

Not sure if you have looked at any alternatives to spray foam. It does wonders if you need the extra support but it adds a ton of weight compared to board foam.

[hunterdave29]

I ripped 2x6's and placed them 16oc. Question, is spray foam gonna do much for rigidity (was also to help hold siding on)? Would board foam bordered by expanda foam be as effective as spray in (insulating/sealing value)?

[Lip_Ripper Guy]

Not sure if you have looked at any alternatives to spray foam. It does wonders if you need the extra support but it adds a ton of weight compared to board foam.

A 'ton' of extra weight? How do you figure?

[low277]

Spray foam adds a lot of structural rigidity, it also has a good adhesion bond on porous materials such as wood. Try some spray foam from a can between two pieces of scrap plywood or lumber and try pull them apart after it drys.

I think there are different densities of spray foam, I do not know which specific one is used for home insulation.

[Lip_Ripper Guy]

Not sure if you have looked at any alternatives to spray foam. It does wonders if you need the extra support but it adds a ton of weight compared to board foam.

Just thought I'd show the math on this. I had heard this misinformation before of spray foam weighing more than board foam, so I did the math on it before I built my house.

For a 7' tall fish house wall, with a 15 inch stud cavity, and 2" of insulation:

1) Board Foam-From Home Depot, 4'x8'x2" Foamular=10.1 pounds. You'll fill 3 stud cavities per sheet. About 1/8th of the sheet will be removed for 7' wall height. Total weight=3.367-.420(1/8th of the sheet)=2.947 pounds per cavity. Weight doesn't include any screws, nails, or glue to hold insulation in place.

2) Closed cell spray foam-Weighs 1.5-2.0# per cubic foot. You'll use about 1.5 cubic feet of spray foam per cavity. Total=2.25-3.0# per cavity (depending on foam density). No extra fasteners or glues needed.

[PurpleFloyd]

Just thought I'd show the math on this. I had heard this misinformation before of spray foam weighing more than board foam, so I did the math on it before I built my house.

For a 7' tall fish house wall, with a 15 inch stud cavity, and 2" of insulation:

1) Board Foam-From Home Depot, 4'x8'x2" Foamular=10.1 pounds. You'll fill 3 stud cavities per sheet. About 1/8th of the sheet will be removed for 7' wall height. Total weight=3.367-.420(1/8th of the sheet)=2.947 pounds per cavity. Weight doesn't include any screws, nails, or glue to hold insulation in place.

2) Closed cell spray foam-Weighs 1.5-2.0# per cubic foot. You'll use about 1.5 cubic feet of spray foam per cavity. Total=2.25-3.0# per cavity (depending on foam density). No extra fasteners or glues needed.

+1.

[sam10basefish]

Your definitely right for medium density spray foam I was referring to high density foam. That's what my buddies were having sprayed in their house. They wanted the highest r value they could find and the high density was running near 6lb/cubic foot. So as long as you are aware of what your getting they can both be good options.