Expanding spray foam question

[kborndale]

In 2015, I paid the following:

R21+ on roof bays (570 sq.ft.): $2340
R21+ on walls (800 sq.ft.): $3040

They charged me an extra $150 to cover exposed joists and another $150 to cover exposed rafters, it's an old timber frame structure that was being finished with these partly exposed. They also had to bring in a generator to power the equipment, since it pulled more than the 60 amps I had available at that location, which cost an extra $300.

They ended up spraying at least 1.5x their min spec, or more, so final job probably averaged closer to R35. I was very happy with the result, but I'd want to do some research before using this product in a basement, where mold could be an issue. My job was in a carriage barn, all above grade.

Doing walls and ceilings would be open cell, lamywaby is doing their basement which would be closed cell and priced at a different rate.

 

[GrumpyDad]

In 2015, I paid the following:

R21+ on roof bays (570 sq.ft.): $2340
R21+ on walls (800 sq.ft.): $3040

They charged me an extra $150 to cover exposed joists and another $150 to cover exposed rafters, it's an old timber frame structure that was being finished with these partly exposed. They also had to bring in a generator to power the equipment, since it pulled more than the 60 amps I had available at that location, which cost an extra $300.

They ended up spraying at least 1.5x their min spec, or more, so final job probably averaged closer to R35. I was very happy with the result, but I'd want to do some research before using this product in a basement, where mold could be an issue. My job was in a carriage barn, all above grade.

what did you determine about the mold?

 

[Easy Livin’ 3000]

Can anyone tell me if there is an expandable spray foam product that is safe for direct contact with the outside of class A chimney pipe?
I want to seal air gaps between my roof flashing and chimney pipe to keep insects out. I have a storm collar for rain but it isn't insect proof.

I don't know much about it, or if it's available as a product, but it should be- aircrete made with fire mortar?

 

[Prometeo]

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Can anyone tell me if there is an expandable spray foam product that is safe for direct contact with the outside of class A chimney pipe?
I want to seal air gaps between my roof flashing and chimney pipe to keep insects out. I have a storm collar for rain but it isn't insect proof.

between the metal flue, and the wall element above the roof, I used fire retardant foam non-flammable (but up to a certain point) but note well, my house has 3 floors, I applied 9-10 meters away from the stove, and the temperature is very low up there, I should also seal the flue three meters from the stove but I have to find other solutions, like glass wool, stuff like that, because at this distance any foam will ignite

 

[begreen]

In 2015, I paid the following:

R21+ on roof bays (570 sq.ft.): $2340
R21+ on walls (800 sq.ft.): $3040

They charged me an extra $150 to cover exposed joists and another $150 to cover exposed rafters, it's an old timber frame structure that was being finished with these partly exposed. They also had to bring in a generator to power the equipment, since it pulled more than the 60 amps I had available at that location, which cost an extra $300.

They ended up spraying at least 1.5x their min spec, or more, so final job probably averaged closer to R35. I was very happy with the result, but I'd want to do some research before using this product in a basement, where mold could be an issue. My job was in a carriage barn, all above grade.

Not relevant to the OP's question. Start a thread in the DIY forum to discuss.